Edgar Filing: LIGAND PHARMACEUTICALS INC

Form 10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

Mark One

x	Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended June 30, 2008

¨	Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the Transition Period From to .

Commission File Number: 001-33093

LIGAND PHARMACEUTICALS INCORPORATED

(Exact Name of Registrant as Specified in its Charter)


Delaware		77-0160744
(State or Other Jurisdiction of Incorporation or Organization)		(I.R.S. Employer Identification No.)

10275 Science Center Drive San Diego, CA		92121-1117
(Address of Principal Executive Offices)		(Zip Code)

Registrant’s Telephone Number, Including Area Code: (858) 550-7500

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “accelerated filer, large accelerated filer and smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large Accelerated Filer ¨ Accelerated Filer x Non-Accelerated Filer ¨ Smaller Reporting Company ¨

(Do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes ¨ No x

As of July 31, 2008, the registrant had 94,929,774 shares of common stock outstanding.

LIGAND PHARMACEUTICALS INCORPORATED

QUARTERLY REPORT

FORM 10-Q

TABLE OF CONTENTS


PART I. FINANCIAL INFORMATION

	ITEM 1.	Financial Statements (Unaudited)	3

		Condensed Consolidated Balance Sheets as of June 30, 2008 and December 31, 2007	3

		Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2008 and 2007	4

		Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2008 and 2007	5

		Notes to Condensed Consolidated Financial Statements	6

	ITEM 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	19

	ITEM 3.	Quantitative and Qualitative Disclosures about Market Risk	30

	ITEM 4.	Controls and Procedures	31

PART II. OTHER INFORMATION

	ITEM 1.	Legal Proceedings	32

	ITEM 1A.	Risk Factors	33

	ITEM 2.	Unregistered Sales of Equity Securities and Use of Proceeds	*

	ITEM 3.	Defaults upon Senior Securities	*

	ITEM 4.	Submission of Matters to a Vote of Security Holders	41

	ITEM 5.	Other Information	*

	ITEM 6.	Exhibits	42

SIGNATURE

*	No information provided due to inapplicability of item.

PART I. FINANCIAL INFORMATION

ITEM 1.

FINANCIAL STATEMENTS

LIGAND PHARMACEUTICALS INCORPORATED

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

(in thousands, except share data)


	June 30, 2008			December 31, 2007
ASSETS
Current assets:
Cash and cash equivalents	$	29,177		$	76,812
Short-term investments		55,819			17,596
Current portion of co-promote termination payments receivable		8,682			10,467
Other current assets		2,434			5,068

Total current assets		96,112			109,943
Restricted investments		1,411			1,411
Property and equipment, net		2,024			2,865
Long-term portion of co-promote termination payments receivable		50,298			48,989
Restricted indemnity account		10,178			10,070

Total assets	$	160,023		$	173,278

LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	10,290		$	12,682
Accrued liabilities		22,698			24,327
Current portion of deferred gain		1,964			1,964
Current portion of co-promote termination liability		8,682			10,467
Current portion of equipment financing obligations		978			1,528

Total current liabilities		44,612			50,968
Long-term portion of co-promote termination liability		50,298			48,989
Long-term portion of equipment financing obligations		266			627
Deferred revenue, net		2,546			2,546
Long-term portion of deferred gain		24,274			25,256
Other long-term liabilities		6,661			3,432

Total liabilities		128,657			131,818

Commitments and contingencies
Common stock subject to conditional redemption; 997,568 shares issued and outstanding at June 30, 2008 and December 31, 2007		12,345			12,345

Stockholders’ equity:
Convertible preferred stock, $0.001 par value; 5,000,000 shares authorized; none issued		—			—
Common stock, $0.001 par value; 200,000,000 shares authorized; 100,540,011 and 100,543,370 shares issued at June 30, 2008 and December 31, 2007, respectively		101			101
Additional paid-in capital		652,956			651,038
Accumulated other comprehensive income (loss)		(28	)		9
Accumulated deficit		(591,874	)		(581,512	)

		61,155			69,636
Treasury stock, at cost; 6,607,905 and 6,263,151 shares at June 30, 2008 and December 31, 2007, respectively		(42,134	)		(40,521	)

Total stockholders’ equity		19,021			29,115

Total liabilities and stockholders’ equity	$	160,023		$	173,278

See accompanying notes.

LIGAND PHARMACEUTICALS INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited)

(in thousands, except share data)


	Three Months Ended June 30,						Six Months Ended June 30,
	2008			2007			2008			2007
Revenues:
Royalties	$	4,804		$	1,410		$	9,678		$	1,410
Collaborative research and development and other revenues		—			—						235

Total revenues		4,804			1,410			9,678			1,645

Operating costs and expenses:
Research and development		6,377			8,751			13,542			24,353
General and administrative		4,551			7,516			14,650			21,683

Total operating costs and expenses		10,928			16,267			28,192			46,036

Accretion of deferred gain on sale leaseback		(491	)		(491	)		(982	)		(982	)

Loss from operations		(5,633	)		(14,366	)		(17,532	)		(43,409	)

Other income (expense):
Interest income		543			2,534			1,478			5,813
Interest expense		(39	)		(90	)		(91	)		(460	)
Other, net		(790	)		11			(1,272	)		62

Total other income (expense), net		(286	)		2,455			115			5,415

Loss before income taxes		(5,919	)		(11,911	)		(17,417	)		(37,994	)
Income tax benefit		1,030			4,225			2,811			13,419

Loss from continuing operations		(4,889	)		(7,686	)		(14,606	)		(24,575	)

Discontinued operations:
Income from discontinued operations before income taxes		—			—			—			5,993
Gain (loss) on sale of AVINZA Product Line before income taxes		(1,156	)		283			7,165			310,414
Gain (loss) on sale of Oncology Product Line before income taxes		(685	)		9,868			230			9,807
Income tax benefit (expense) on discontinued operations		301			(2,284	)		(3,151	)		(27,137	)

Discontinued operations		(1,540	)		7,867			4,244			299,077

Net income (loss):	$	(6,429	)	$	181		$	(10,362	)	$	274,502

Basic and diluted per share amounts:
Loss from continuing operations	$	(0.05	)	$	(0.08	)	$	(0.15	)	$	(0.24	)
Discontinued operations		(0.02	)		0.08			0.04			2.98

Net income (loss)	$	(0.07	)	$	—		$	(0.11	)	$	2.74

Weighted average number of common shares		95,055,718			99,878,197			95,051,672			100,279,949

See accompanying notes.

LIGAND PHARMACEUTICALS INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(in thousands)


	Six Months Ended June 30,
	2008			2007
Operating activities:
Net income (loss)	$	(10,362	)	$	274,502
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Gain on sale of AVINZA Product Line before income taxes		(7,165	)		(310,414	)
Gain on sale of Oncology Product Line before income taxes		(230	)		(9,807	)
Amortization of deferred gain on sale leaseback		(982	)		(982	)
Amortization of acquired technology and license rights		—			909
Non-cash lease costs		4,148			—
Depreciation and amortization of property and equipment		548			943
Realized loss on investment		1,270			—
Loss on asset write-offs		639			745
Stock-based compensation		1,847			6,130
Non-cash co-promote termination expense		—			(1,409	)
Other		(13	)		346
Changes in operating assets and liabilities:
Accounts receivable, net		—			11,487
Inventories, net		—			930
Other current assets		2,634			3,847
Restricted indemnity account		(108	)		(9,939	)
Accounts payable and accrued liabilities		(5,714	)		(33,653	)
Other liabilities		118			313
Deferred revenue, net		—			(8,657	)

Net cash used in operating activities		(13,370	)		(74,709	)

Investing activities:
Proceeds from sale of AVINZA Product Line		8,058			281,861
Additional proceeds from sale of Oncology Product Line		—			10,000
Proceeds from sale of property and equipment		40			311
Purchases of short-term investments		(58,858	)		(6,561	)
Proceeds from sale of short-term investments		19,364			8,219
Decrease in restricted cash		—			39,079
Purchases of property and equipment		(385	)		(331	)
Other, net		(6	)		29

Net cash (used in) provided by investing activities		(31,787	)		332,607

Financing activities:
Principal payments on equipment financing obligations		(911	)		(1,076	)
Repayment of debt		—			(37,750	)
Proceeds from issuance of common stock		46			4,089
Dividend paid		—			(252,742	)
Dividend received on treasury stock held by Company		—			185
Repurchase of common stock		(1,613	)		(25,394	)

Net cash used in financing activities		(2,478	)		(312,688	)

Net decrease in cash and cash equivalents		(47,635	)		(54,790	)
Cash and cash equivalents at beginning of period		76,812			158,401

Cash and cash equivalents at end of period	$	29,177		$	103,611

Supplemental disclosure of cash flow information:
Interest paid	$	129		$	1,236
Taxes paid	$	92		$	4,655
Supplemental schedule of non-cash investing and financing activities:
Employee receivable from stock option exercises	$	—		$	181

See accompanying notes.

LIGAND PHARMACEUTICALS INCORPORATED

Notes to Condensed Consolidated Financial Statements

(Unaudited)

1. Basis of Presentation

The accompanying condensed consolidated financial statements of Ligand Pharmaceuticals Incorporated (the “Company” or “Ligand”) were prepared in accordance with instructions for this Quarterly Report on Form 10-Q for the quarter ended June 30, 2008 and, therefore, do not include all information necessary for a complete presentation of financial condition, results of operations, and cash flows in conformity with accounting principles generally accepted in the United States of America. However, all adjustments, consisting of normal recurring adjustments, which, in the opinion of management, are necessary for a fair presentation of the condensed consolidated financial statements, have been included. The results of operations for the three and six months ended June 30, 2008 and 2007 are not necessarily indicative of the results that may be expected for the entire fiscal year or any other future period. These statements should be read in conjunction with the consolidated financial statements and related notes, which are included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2007.

As further discussed in Note 2, the Company sold its oncology product line (“Oncology”) on October 25, 2006 and its AVINZA product line (“AVINZA”) on February 26, 2007. The operating results for Oncology and AVINZA have been presented in the accompanying condensed consolidated financial statements as “Discontinued Operations.”

The Company’s other potential products are in various stages of development. Potential products that are promising at early stages of development may not reach the market for a number of reasons. A significant portion of the Company’s revenues to date have been derived from research and development agreements with major pharmaceutical collaborators. Prior to generating revenues from these products, the Company or its collaborators must complete the development of the products in the human health care market. No assurance can be given that: (1) product development efforts will be successful, (2) required regulatory approvals for any indication will be obtained, (3) any products, if introduced, will be capable of being produced in commercial quantities at reasonable costs or, (4) patient and physician acceptance of these products will be achieved. There can be no assurance that the Company will ever achieve or sustain annual profitability.

The Company faces risks common to companies whose products are in various stages of development. These risks include, among others, the Company’s potential need for additional financing to complete its research and development programs and commercialize its technologies. The Company has incurred significant losses since its inception. At June 30, 2008, the Company’s accumulated deficit was $591.9 million. The Company expects to continue to incur substantial research and development expenses.

The Company believes that patents and other proprietary rights are important to its business. Its policy is to file patent applications to protect technology, inventions and improvements to its inventions that are considered important to the development of its business. The patent positions of pharmaceutical and biotechnology firms, including the Company, are uncertain and involve complex legal and technical questions for which important legal principles are largely unresolved.

Principles of Consolidation

The condensed consolidated financial statements include the Company’s wholly owned subsidiaries, Ligand Pharmaceuticals International, Inc., Ligand Pharmaceuticals (Canada) Incorporated, Seragen, Inc. (“Seragen”) and Nexus Equity VI LLC (“Nexus”). Intercompany accounts and transactions have been eliminated in consolidation.

Use of Estimates

The preparation of consolidated financial statements in conformity with generally accepted accounting principles requires the use of estimates and assumptions that affect the reported amounts of assets and liabilities, including disclosure of contingent assets and contingent liabilities, at the date of the consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. The Company’s critical accounting policies are those that are both most important to the Company’s financial condition and results of operations and require the most difficult, subjective or complex judgments on the part of management in their application, often as a result of the need to make estimates about the effect of matters that are inherently uncertain. Because of the uncertainty of factors surrounding the estimates or judgments used in the preparation of the consolidated financial statements, actual results may materially vary from these estimates.

Income (Loss) Per Share

Net income (loss) per share is computed using the weighted average number of common shares outstanding. Basic and diluted income (loss) per share amounts are equivalent for the periods presented as the inclusion of potential common shares in the number of shares used for the diluted computation would be anti-dilutive to loss per share from continuing operations. In accordance with Statement of Financial Accounting Standards (“SFAS”) No. 128, Earnings Per Share, no potential common shares are included in the computation of any diluted per share amounts, including income (loss) per share from discontinued operations and net income (loss) per share, as the Company reported a loss from continuing operations for all periods presented. Potential common shares, the shares that would be issued upon the exercise of outstanding stock options and the vesting of restricted shares, were 4.0 million and 4.2 million at June 30, 2008 and 2007, respectively.

Guarantees and Indemnifications

The Company accounts for and discloses guarantees in accordance with FASB Interpretation No. 45 (“FIN 45”), Guarantor’s Accounting and Disclosure Requirements for Guarantees Including Indirect Guarantees of Indebtedness of Others, an interpretation of FASB Statements Nos. 5, 57 and 107 and rescission of FIN 34. The following is a summary of the Company’s agreements that management has determined are within the scope of FIN 45:

Under its amended and restated bylaws, the Company has agreed to indemnify its officers and directors for certain events or occurrences arising as a result of the officer’s or director’s serving in such capacity. The term of the indemnification period is for the officer’s or director’s lifetime. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited. The Company has a directors and officers liability insurance policy that limits its exposure and enables it to recover a portion of any future amounts paid. As a result of its insurance policy coverage, management believes the estimated fair value of these indemnification agreements is minimal and has no liabilities recorded for these agreements as of June 30, 2008 and December 31, 2007. These insurance policies, however, do not cover the ongoing legal costs or the fines, if any, that may become due in connection with the ongoing SEC investigation of the Company, following the use of prior directors and officers liability insurance policy limits to settle certain shareholder litigation matters (see discussion of SEC investigation at Note 6). The SEC investigation is ongoing, and management is currently unable to assess the duration, extent, and cost of such investigation. Further, management is unable to assess the amount of such costs that may in turn be required to be reimbursed to any individual director or officer under the Company’s indemnification agreements as the scope of the investigation cannot be apportioned amongst the Company and the indemnified officers and directors. Accordingly, a liability has not been recorded for the fair value of the ongoing and ultimate obligations, if any, related to the SEC investigation. The Company has a restricted cash balance of approximately $10.2 million relating to this indemnity at June 30, 2008.

Revenue Recognition – AVINZA Royalties

In accordance with the AVINZA Purchase Agreement (see Note 2), royalties are required to be reported and paid to the Company within 45 days of quarter-end during the 20 month period following the closing of the sale transaction. Thereafter, royalties will continue to be reported on a quarterly basis but paid on a calendar year basis. Royalties on sales of AVINZA due from King Pharmaceuticals, or King, are recognized in the quarter reported by King.

Collaborative Research and Development and Other Revenues

Collaborative research and development and other revenues are recognized as services are performed consistent with the performance requirements of the contract and collection is assured. Non-refundable contract fees for which no further performance obligation exists and where the Company has no continuing involvement are recognized upon the earlier of when payment is received or collection is assured. Revenue from non-refundable contract fees where the Company has continuing involvement through research and development collaborations or other contractual obligations is recognized ratably as services are performed over the development period or the period for which the Company continues to have a performance obligation. Revenue from performance milestones is recognized upon the achievement of the milestones as specified in the respective agreement. Payments received in advance of performance or delivery are recorded as deferred revenue and subsequently recognized over the period of performance or upon delivery.

Income Taxes

The Company recognizes liabilities or assets for the deferred tax consequences of temporary differences between the tax bases of assets or liabilities and their reported amounts in the financial statements in accordance with SFAS No. 109, Accounting for Income Taxes (“SFAS 109”). These temporary differences will result in taxable or deductible amounts in future years when the reported amounts of the assets or liabilities are recovered or settled. SFAS 109 requires that a valuation allowance be established when management determines that it is more likely than not that all or a portion of a deferred tax asset will not be realized. Management evaluates the realizability of its net deferred tax assets on a quarterly basis and valuation allowances are provided, as necessary. During this evaluation, management reviews its forecasts of income in conjunction with other positive and negative evidence surrounding the realizability of its deferred tax assets to determine if a valuation allowance is required. Adjustments to the valuation allowance will increase or decrease the Company’s income tax provision or benefit. Management also applies the guidance of SFAS 109 to determine the amount of income tax expense or benefit to be allocated among continuing operations, discontinued operations, and items charged or credited directly to stockholders’ equity.

The Company adopted the provisions of Financial Accounting Standard Board (“FASB”) Interpretation No. 48 (“FIN 48”), “Accounting for Uncertainty in Income Taxes,” on January 1, 2007. FIN 48 clarifies the accounting for income taxes by prescribing a minimum probability threshold that a tax position must meet before a financial statement benefit is recognized. The minimum threshold is defined in FIN 48 as a tax position that is more likely than not to be sustained upon examination by the applicable taxing authority, including resolution of any related appeals or litigation processes, based on the technical merits of the position. The Company recognizes interest and penalties related to uncertain tax positions in income tax expense. There was no unrecognized tax benefit as of June 30, 2008 and 2007.

In accordance with SFAS No. 123 (revised 2004) Share-Based Payments (“SFAS 123(R)”) effective January 1, 2006, the Company recognizes windfall tax benefits associated with the exercise of stock options directly to stockholders’ equity only when realized in cash or as a reduction in income taxes payable. A windfall tax benefit occurs when the actual tax benefit realized by the Company upon an employee’s disposition of a share-based award exceeds the deferred tax asset, if any, associated with the award that the Company had recorded. When assessing whether a tax benefit relating to share-based compensation has been realized, the Company follows the with-and-without method, excluding the indirect effects, under which current year share-based compensation deductions are assumed to be utilized after net operating loss carryforwards and other tax attributes.

Accounting for Stock-Based Compensation

The Company applies the fair value recognition provisions of SFAS 123(R) using the modified prospective transition method. Under that transition method, compensation cost recognized in the three and six months ended June 30, 2008 and 2007 includes: (a) compensation cost for all stock-based awards granted prior to, but not yet vested as of January 1, 2006, based on the grant date fair value estimated in accordance with the original provisions of SFAS No. 123, and (b) compensation cost for all stock-based awards granted subsequent to January 1, 2006, based on the grant date fair value estimated in accordance with the provisions of SFAS No. 123(R).

Stock-based compensation expense for awards to employees and non-employee directors is recognized on a straight-line basis over the vesting period until the last tranche vests. Compensation cost for consultant awards is recognized over each separate tranche’s vesting period. The Company recognized compensation expense of $0.9 million and $0.6 million for the three months ended June 30, 2008 and 2007, respectively, and $1.8 million and $6.1 million for the six months ended June 30, 2008 and 2007, respectively, associated with option awards, restricted stock and an equitable adjustment of employee stock options. Of the total

compensation expense associated with the option awards for the three and six months ended June 30, 2007, $17,000 and $1.8 million, respectively, related to the $2.50 equitable adjustment of the exercise price for all options outstanding as of April 3, 2007 that was measured for financial reporting purposes effective March 28, 2007. There was no deferred tax benefit recognized in connection with these costs.

The fair-value for options that were awarded to employees and directors was estimated at the date of grant using the Black-Scholes option valuation model with the following weighted-average assumptions:


	Three Months Ended June 30,				Six Months Ended June 30,
	2008		2007		2008		2007
Risk-free interest rate	3.4	%	5.0	%	3.0	%	5.0	%
Dividend yield	—		—		—		—
Expected volatility	68	%	66	%	65	%	66	%
Expected term	6.0 years		6.0 years		6.0 years		6.0 years

The expected term of the employee and non-employee director options is the estimated weighted-average period until exercise or cancellation of vested options (forfeited unvested options are not considered). SAB 107 guidance permitted companies to use a “safe harbor” expected term assumption for grants up to December 31, 2007 based on the mid-point of the period between vesting date and contractual term, averaged on a tranche-by-tranche basis. The Company used the safe harbor in selecting the expected term assumption in 2007. Management used SAB 110, which extends SAB 107 in the absence of adequate data for the year 2008. The expected term for consultant awards is the remaining period to contractual expiration.

Volatility is a measure of the expected amount of variability in the stock price over the expected life of an option expressed as a standard deviation. In selecting this assumption, the Company used the historical volatility of the Company’s stock price over a period approximating the expected term.

Stock Option Activity


	Shares		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term in Years	Aggregate Intrinsic Value (in thousands)
Balance at December 31, 2007	2,223,032		$	8.87
Granted	1,293,500			3.52
Exercised	(4,438	)		3.41
Forfeited	(91,225	)		7.15
Cancelled	(325,067	)		9.83

Balance at June 30, 2008	3,095,802		$	6.58	7.12	$	70

Exercisable at June 30, 2008	1,302,292		$	9.50	4.29	$	70

Options expected to vest as of June 30, 2008	2,886,979		$	6.21	7.10	$	70

The weighted-average grant-date fair value of all stock options granted during the six months ended June 30, 2008 was $2.15 per share. The total intrinsic value of all options exercised during the six months ended June 30, 2008 was $3,000. As of June 30, 2008, there was $4.4 million of total unrecognized compensation cost related to nonvested stock options. That cost is expected to be recognized over a weighted-average period of 3.24 years.

As of June 30, 2008, 2.3 million shares were available for future option grants or direct issuance under the 2002 plan.

Cash received from options exercised for the six months ended June 30, 2008 and 2007 was $15,000 and $4.1 million, respectively. There is no current tax benefit related to options exercised because of net operating losses (“NOLs”) for which a full valuation allowance has been established.

Restricted Stock Activity

Restricted stock activity for the six months ended June 30, 2008 is as follows:


	Shares		Weighted- Average Grant Date Stock Price
Nonvested at December 31, 2007	295,600		$	9.90
Granted	404,000			3.42
Vested	(110,012	)		10.92
Forfeited	(15,066	)		6.51

Nonvested at June 30, 2008	574,522		$	5.23

The weighted-average grant-date fair value of restricted stock granted during the six months ended June 30, 2008 was $3.42 per share. As of June 30, 2008, there was $2.0 million of total unrecognized compensation cost related to nonvested restricted stock. That cost is expected to be recognized over the next 1.91 years.

Employee Stock Purchase Plan

The Company has an employee stock purchase plan (the “2002 ESPP”). The 2002 ESPP, as amended, allows employees to purchase a limited amount of common stock at the end of each three month period at a price equal to the lesser of 85% of fair market value on either the first trading day of the period or the last trading day of the period (the “Lookback Provision”). The 15% discount and the Lookback Provision make the 2002 ESPP compensatory under SFAS 123(R). There were 20,579 shares of common stock issued under the 2002 ESPP during the six months ended June 30, 2008, resulting in a compensation expense of $14,000. There were 11,609 shares of common stock issued under the 2002 ESPP during the six months ended June 30, 2007, resulting in a compensation expense of $26,000. As of June 30, 2008, 73,029 shares were available for future purchases under the 2002 ESPP.

Share Repurchases

In March 2007, the Company’s Board of Directors authorized up to $100.0 million in share repurchases over the subsequent 12 months. During the six months ended June 30, 2008, the Company repurchased a total of 0.3 million shares of its common stock totaling $1.6 million. The Company has repurchased an aggregate of 6.5 million shares of its common stock totaling $41.2 million prior to the expiration of the repurchase period on March 31, 2008.

Cash, Cash Equivalents and Short-term Investments

Cash and cash equivalents consist of cash and highly liquid securities with maturities at the date of acquisition of three months or less. The following table summarizes the various investment categories at June 30, 2008 and December 31, 2007 (in thousands):


	Cost		Gross unrealized gains		Gross unrealized losses			Estimated fair value
June 30, 2008
U.S. government securities	$	53,417	$	7	$	(35	)	$	53,389
Corporate obligations		2,430		—		—			2,430

		55,847		7		(35	)		55,819
Certificates of deposit - restricted		1,411		—		—			1,411

	$	57,258	$	7	$	(35	)	$	57,230

December 31, 2007
U.S. government securities	$	7,509	$	4	$	—		$	7,513
Corporate obligations		10,078		14		(9	)		10,083

		17,587		18		(9	)		17,596
Certificates of deposit - restricted		1,411		—		—			1,411

	$	18,998	$	18	$	(9	)	$	19,007

In July 2007, the Company purchased $5.0 million of commercial paper issued by Golden Key Ltd. While the investment was highly-rated and within the Company’s investment policy at the time of purchase, during the third quarter of 2007, large credit rating agencies downgraded the quality of this security. In addition, as a result of not meeting certain liquidity covenants, the assets of Golden Key Ltd. were assigned to a trustee who established a committee of the largest senior credit holders to determine the next steps. Subsequently, Golden Key Ltd. defaulted on its obligation to settle the security on the stated maturity date of October 10, 2007. Based on available information, management currently estimates that it will be able to recover approximately $2.4 million on this security. Management adjusted the carrying value by recording an impairment loss of $0.8 million and $1.3 million during the three and six months ended June 30, 2008, respectively. As a result of ongoing volatility in the liquidity of the capital markets, the Company may be exposed to additional impairment for this investment until it is fully recovered or disposed of.

Other Current Assets

Other current assets consist of the following (in thousands):


	June 30, 2008		December 31, 2007
Income taxes receivable	$	897	$	3,099
Prepaid expenses		1,136		1,076
Other receivables		401		738
Other		—		155

	$	2,434	$	5,068

Property and Equipment

Property and equipment is stated at cost and consists of the following (in thousands):


	June 30, 2008			December 31, 2007
Equipment and leasehold improvements	$	37,090		$	40,577
Less accumulated depreciation and amortization		(35,066	)		(37,712	)

	$	2,024		$	2,865

Depreciation of equipment is computed using the straight-line method over the estimated useful lives of the assets which range from three to ten years. Leasehold improvements are amortized using the straight-line method over their estimated useful lives or their related lease term, whichever is shorter.

Impairment of Long-Lived Assets

The Company reviews long-lived assets for impairment annually or whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to future undiscounted net cash flows expected to be generated by the asset. If such assets are considered to be impaired, the impairment to be recognized is measured as the amount by which the carrying amount of the assets exceeds the fair value of the assets. Fair value for the Company’s long-lived assets is determined using the expected cash flows discounted at a rate commensurate with the risk involved. During the three months ended June 30, 2008, the Company recorded no impairment charges, compared to a $0.3 million reduction to impairment for the same period in 2007, which related to the proceeds from the sale of assets impaired as of March 31, 2007. During the six months ended June 30, 2008, the Company recorded an impairment charge of $0.7 million to general and administrative expense as a result of vacating a building in February 2008. For the same period in 2007, the Company recorded a net impairment charge of $0.7 million, which included $0.3 million of proceeds received from the sale of assets abandoned or disposed of and that were no longer used in the Company’s ongoing operations following the sale of the Company’s AVINZA product line and reduction in workforce. As of June 30, 2008, management believes that the future cash flows to be received from its long-lived assets will exceed the assets’ carrying value.

Accrued Liabilities

Accrued liabilities consist of the following (in thousands):


	June 30, 2008		December 31, 2007
Allowances for loss on returns, rebates, chargebacks, and other discounts	$	16,721	$	17,275
Compensation		1,338		3,402
Current portion of lease termination obligation		1,045		—
Other		3,594		3,650

	$	22,698	$	24,327

The following summarizes the activity in the accrued liability accounts related to allowances for loss on returns, rebates, chargebacks, and other discounts for the six months ended June 30, 2008 (in thousands):


	Charge-backs and Rebates			Returns			Total
Balance at December 31, 2007	$	2,216		$	15,059		$	17,275
AVINZA Transaction Provision⁽¹⁾		(600	)		1,992			1,392
Oncology Transaction Provision⁽²⁾		153			(163	)		(10	)
Payments⁽³⁾		(759	)		—			(759	)
Charges⁽⁴⁾		—			(1,177	)		(1,177	)

Balance at June 30, 2008	$	1,010		$	15,711		$	16,721

⁽¹⁾	The AVINZA transaction provision amounts represent changes in the estimates of the accruals for rebates, chargebacks and returns recorded in connection with the sale of the AVINZA product line.

⁽²⁾	The Oncology transaction provision amounts represent changes in the estimates of the accruals for rebates, chargebacks and returns recorded in connection with the sale of the Oncology product line.

⁽³⁾	Represents actual cash payments affecting the reserve balance. Actual cash settlement of returns is reflected through accounts payable, which for the six months ended June 30, 2008 was $0.8 million.

⁽⁴⁾	Represents returns processed in the current reportable period.

Comprehensive Income

Comprehensive income represents net income adjusted for the change during the periods presented in unrealized gains and losses on available-for-sale securities less reclassification adjustments for realized gains or losses included in net income, as well as foreign currency translation adjustments. The accumulated unrealized gains or losses and cumulative foreign currency translation adjustments are reported as accumulated other comprehensive income as a separate component of stockholders’ equity. Comprehensive income is as follows (in thousands):


	Three Months Ended June 30,						Six Months Ended June 30,
	2008			2007			2008			2007
Net income (loss) as reported	$	(6,429	)	$	181		$	(10,362	)	$	274,502
Unrealized net gain (loss) on available-for-sale securities		15			(6	)		(37	)		(6	)
Foreign currency translation adjustments		—			(9	)		—			332

Comprehensive income (loss)	$	(6,414	)	$	166		$	(10,399	)	$	274,828

New Accounting Pronouncements

In September 2006, the FASB issued SFAS No. 157, Fair Value Measurements (“SFAS 157”). SFAS 157 defines fair value, establishes a framework for measuring fair value under GAAP, and expands disclosures about fair value measurements. SFAS 157 does not require any new fair value measurements but rather eliminates inconsistencies in guidance found in various prior accounting pronouncements and is effective for financial statements issued for fiscal years beginning after November 15, 2007. In February 2008, the FASB issued FASB FSP 157-2 which delays the effective date of SFAS 157 for all nonfinancial assets and nonfinancial liabilities, except those that are recognized or disclosed at fair value in the financial statements on a recurring basis (at least annually), until fiscal years beginning after November 15, 2008, and interim periods within those fiscal years. These nonfinancial items include assets and liabilities such as reporting units measured at fair value in a goodwill impairment test and nonfinancial assets acquired and liabilities assumed in a business combination. Effective January 1, 2008, the Company adopted SFAS 157 for financial assets and liabilities recognized at fair value on a recurring basis. The adoption of SFAS 157 did not have a material impact on the Company’s consolidated results of operations or financial position.

In February 2007, the FASB issued SFAS No. 159, The Fair Value Option for Financial Assets and Financial Liabilities-Including an amendment of FASB Statement No. 115 (“SFAS 159”). SFAS 159 permits entities to choose to measure many financial instruments and certain other items at fair value. Most of the provisions of SFAS 159 apply only to entities that elect the fair value option; however, the amendment to FASB Statement No. 115, Accounting for Certain Investments in Debt and Equity Securities, applies to all entities with available-for-sale and trading securities. SFAS 159 is effective for financial statements issued for fiscal years beginning after November 15, 2007. The Company currently does not have any instruments eligible for election of the fair value option. Therefore, the adoption of SFAS 159 did not have a material impact on the Company’s consolidated results of operations or financial position.

In June 2007, the FASB ratified the consensus reached by the EITF in Issue No. 07-3, Accounting for Nonrefundable Advance Payments for Goods or Services to Be Used in Future Research and Development Activities (“EITF 07-3”). EITF 07-3 requires that nonrefundable advance payments for future research and development activities be deferred and capitalized. EITF 07-3 is effective for financial statements issued for fiscal years beginning after December 15, 2007. The adoption of EITF 07-3 did not have a material impact on the Company’s consolidated results of operations or financial position.

In December 2007, the FASB ratified the consensus reached by the EITF in Issue No. 07-1, Accounting for Collaborative Arrangements (“EITF 07-1”). EITF 07-1 requires that transactions under collaborative arrangements be reported in the appropriate line item in each company’s financial statements pursuant to the guidance in Issue No. 99-19, Reporting Revenue Gross as a Principal versus Net as an Agent, and requires enhanced disclosures of such arrangements. EITF 07-1 is effective for financial statements issued for fiscal years beginning after December 15, 2008. The Company will adopt EITF 07-1 in the first interim period of fiscal 2009 and management is evaluating the impact, if any, that the adoption of this issue will have on its consolidated results of operations and financial position.

In December 2007, the FASB issued SFAS No. 141 (revised 2007), Business Combinations (“SFAS 141R”). SFAS 141R requires an acquirer to (i) recognize the assets acquired, liabilities assumed, contractual contingencies, and contingent consideration at fair value at the acquisition date, (ii) recognize acquisition-related costs separately from the acquisition, (iii) to recognize ”negative goodwill” in earnings as a gain attributable to the acquisition, and (iv) to recognize changes in the amount of its deferred tax benefits that are recognizable because of the business combination either in earnings in the period of the combination or directly in contributed capital, depending on the circumstances. SFAS 141R is effective for business combinations for which the acquisition date is on or after the beginning of the first annual reporting period beginning on or after December 15, 2008. Management will assess the impact that SFAS 141R may have on its consolidated results of operations and financial position.

In December 2007, the FASB issued Statement No. 160, Noncontrolling Interests in Consolidated Financial Statements—an amendment of ARB No. 51 (“SFAS 160”). SFAS 160 requires entities to present ownership interests in subsidiaries held by parties other than the parent entity within the equity section of the consolidated balance sheet, to present the amount of consolidated net income attributable to the parent and to the noncontrolling interest in the consolidated statement of operations, to recognize any changes in ownership interests as equity transactions, and to measure at fair value any retained noncontrolling equity investment upon deconsolidation of a subsidiary. The Company will adopt SFAS 160 in the first interim period of fiscal 2009 and management is evaluating the impact, if any, that the adoption of this statement will have on its consolidated results of operations and financial position.

In March 2008, the FASB issued Statement No. 161, Disclosures about Derivative Instruments and Hedging Activities—an amendment of FASB Statement No. 133 (“SFAS 161”). SFAS 161 requires entities to disclose the objectives for using derivative instruments in terms of underlying risk and accounting designation, to disclose the fair values of derivative instruments and their gains and losses in a tabular format, and to disclose information about credit-risk-related contingent features. The Company will adopt SFAS 161 in the first interim period of fiscal 2009 and management is evaluating the impact, if any, that the adoption of this statement will have on its consolidated results of operations and financial position.

2. Discontinued Operations

Oncology Product Line

On September 7, 2006, the Company, Eisai Inc., a Delaware corporation and Eisai Co., Ltd., a Japanese company (together with Eisai Inc., “Eisai”), entered into a purchase agreement (the “Oncology Purchase Agreement”) pursuant to which Eisai agreed to acquire all of the Company’s worldwide rights in and to the Company’s oncology products, including, among other things, all related inventory, equipment, records and intellectual property, and assume certain liabilities as set forth in the Oncology Purchase Agreement. The Oncology product line included the Company’s four marketed oncology drugs: ONTAK, Targretin capsules, Targretin gel and Panretin gel. In the first quarter of 2008, the company recorded a $0.9 million pre-tax gain on the sale due to subsequent changes in certain estimates of assets and liabilities recorded as of the sale date. In the second quarter of 2008, the Company recognized a $0.7 million pre-tax reduction to the gain on the sale due to subsequent changes in certain estimates of assets and liabilities recorded as of the sale date.

Prior to the Oncology sale, the Company recorded accruals for rebates, chargebacks, and other discounts related to Oncology products when product sales were recognized as revenue under the sell-through method. Upon the Oncology sale, the Company accrued for rebates, chargebacks, and other discounts related to Oncology products in the distribution channel which had not sold-through at the time of the Oncology sale and for which the Company retained the liability subsequent to the Oncology sale. The Company’s accruals for Oncology rebates, chargebacks, and other discounts total $0.7 million and $1.2 million as of June 30, 2008 and December 31, 2007, respectively, and are included in accrued liabilities in the condensed consolidated balance sheets.

Additionally, and pursuant to the terms of the Oncology Purchase Agreement, the Company retained the liability for returns of products from wholesalers that had been sold by the Company prior to the close of the transaction. Accordingly, as part of the accounting for the sale of the Oncology product line, the Company recorded a reserve for Oncology product returns. Under the sell-through revenue recognition method, the Company previously did not record a reserve for returns from wholesalers. The Company’s reserve for Oncology returns was $3.5 million and $4.4 million as of June 30, 2008 and December 31, 2007, respectively, and are included in accrued liabilities in the condensed consolidated balance sheets.

AVINZA Product Line

On September 6, 2006, the Company and King, entered into a purchase agreement (the “AVINZA Purchase Agreement”), pursuant to which King agreed to acquire all of the Company’s rights in and to AVINZA in the United States, its territories and Canada, including, among other things, all AVINZA inventory, records and related intellectual property, and assume certain liabilities as set forth in the AVINZA Purchase Agreement (collectively, the “Transaction”).

Pursuant to the AVINZA Purchase Agreement, at Closing on February 26, 2007 (the “Closing Date”), the Company received $280.4 million in net cash proceeds, which is net of $15.0 million that was funded into an escrow account to support any potential indemnification claims made by King following the closing.

In connection with the sale, the Company agreed to indemnify King for a period of 16 months after the closing of the Transaction for a number of specified matters, including any breach of the Company’s representations, warranties or covenants contained in the asset purchase agreement. In certain defined cases, the Company’s obligation to indemnify King extends for a period of 30 months following the closing of the Transaction. Under the Company’s agreement with King, $15.0 million of the total upfront cash payment was deposited into an escrow account to secure the Company’s indemnification obligations to King following the closing of the Transaction. Of the escrowed amount, $7.5 million was released to the Company in August 2007, and the remaining $7.5 million, plus interest of $0.6 million, was released to the Company in February 2008 and recorded as gain on sale of the AVINZA product line.

Prior to the AVINZA sale, the Company recorded accruals for rebates, chargebacks, and other discounts related to AVINZA products when product sales were recognized as revenue under the sell-through method. Upon the AVINZA sale, the Company accrued for rebates, chargebacks, and other discounts related to AVINZA products in the distribution channel which had not sold-through at the time of the AVINZA sale and for which the Company retained the liability subsequent to the sale. The Company’s accruals for AVINZA rebates, chargebacks, and other discounts total $0.3 million and $1.0 million as of June 30, 2008 and December 31, 2007, respectively, and are included in accrued liabilities in the condensed consolidated balance sheets.

Additionally, and pursuant to the terms of the AVINZA Purchase Agreement, the Company retained the liability for returns of product from wholesalers that had been sold by the Company prior to the close of the Transaction. Accordingly, as part of the accounting for the gain on the sale of AVINZA, the Company recorded a reserve for AVINZA product returns. Under the sell-through revenue recognition method, the Company previously did not record a reserve for returns from wholesalers. The Company’s reserve for AVINZA returns was $12.2 million and $10.7 million as of June 30, 2008 and December 31, 2007, respectively, and are included in accrued liabilities in the condensed consolidated balance sheets.

3. Financial Instruments

The Company measures certain financial assets and liabilities at fair value on a recurring basis, including available-for-sale fixed income and equity securities and other equity securities. The fair value of these certain financial assets and liabilities was determined using the following inputs at June 30, 2008:


	Fair Value Measurements at Reporting Date Using
			Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
	Total		(Level 1)		(Level 2)		(Level 3)
Assets
Fixed income available-for-sale securities⁽¹⁾	$	58,963	$	56,533	$	2,430	$	—
Equity available-for-sale securities⁽²⁾		—		—		—		—

Total	$	58,963	$	56,533	$	2,430	$	—

⁽¹⁾	Included in cash and cash equivalents and short-term investments on our condensed consolidated balance sheet.

⁽²⁾	Included in short-term investments on our condensed consolidated balance sheet.

Fixed income available-for-sale securities include U. S. Agency Bonds and Notes, and Corporate Discount Commercial Paper. Cash equivalents consist of instruments with remaining maturities of three months or less at the date of purchase. The remaining balance of cash equivalents (not included in this table) consists primarily of money market funds, for which the carrying amount is a reasonable estimate of fair value.

4. AVINZA Co-Promotion

In February 2003, the Company and Organon Pharmaceuticals USA Inc. (“Organon”) announced that they had entered into an agreement for the co-promotion of AVINZA. Subsequently in January 2006, the Company signed an agreement with Organon that terminated the AVINZA co-promotion agreement between the two companies and returned AVINZA co-promotion rights to Ligand. In consideration of the early termination and return of rights under the terms of the agreement, the Company agreed to and paid Organon $37.8 million in October 2006. The Company further agreed to and paid Organon $10.0 million in January 2007, in consideration of certain minimum sales calls during a Transition Period. In addition, following the Transition Period, the Company agreed to make quarterly royalty payments to Organon equal to 6.5% of AVINZA net sales through December 31, 2012 and thereafter 6.0% through patent expiration, currently anticipated to be November of 2017.

On February 26, 2007, the Company consummated its agreement with King pursuant to which King acquired all of the Company’s rights in and to AVINZA, assumed certain liabilities, and reimbursed the Company the $47.8 million previously paid to Organon (comprised of the $37.8 million paid in October 2006 and the $10.0 million that the Company paid in January 2007). King also assumed the Company’s co-promote termination obligation to make payments to Organon based on net sales of AVINZA. In connection with King’s purchase of AVINZA, Organon did not consent to the legal assignment of the co-promote termination obligation to King. Accordingly, the Company remains liable to Organon in the event of King’s default of the obligation. Therefore, the Company recorded an asset as of February 26, 2007 to recognize King’s assumption of the obligation, while continuing to carry the co-promote termination liability in the Company’s consolidated financial statements to recognize the Company’s legal obligation as primary obligor to Organon as required under SFAS No. 140, Accounting for Transfers and Servicing of Financial Assets and Extinguishments of Liabilities. This asset represents a non-interest bearing receivable for future payments to be made by King and is recorded at its fair value based on management’s estimate of future sales of AVINZA. As of June 30, 2008 and thereafter, the receivable and liability will remain equal and adjusted each quarter for changes in the estimated fair value of the obligation including for any changes in the estimate of future net AVINZA product sales. This receivable will be assessed on a quarterly basis for impairment (e.g., in the event King defaults on the assumed obligation to pay Organon). As of December 31, 2007 and June 30, 2008, the fair value of the co-promote termination liability (and the corresponding receivable) was determined using a discount rate of 15%.

On an annual basis, management reviews the carrying value of the co-promote termination liability. Due to assumptions and judgments inherent in determining the estimates of future net AVINZA sales through November 2017, the actual amount of net AVINZA sales used to determine the current fair value of the Company’s co-promote termination asset and liability may be materially different from current estimates.

A summary of the co-promote termination liability as of June 30, 2008 is as follows (in thousands):


Net fair value of payments based on estimated future net AVINZA product sales as of December 31, 2007	$	59,456
Assumed payments made by King or assignee		(4,194	)
June 30, 2008 fair value adjustment of estimated future payments based on estimated future net AVINZA product sales		3,708

Total co-promote termination liability as of June 30, 2008		58,970
Less: current portion of co-promote termination liability as of June 30, 2008		(8,682	)

Long-term portion of co-promote termination liability as of June 30, 2008	$	50,298

5. Property Leases

The Company leases one of its office and research facilities under an operating lease arrangement through July 2015. The Company fully vacated this facility in February 2008. The operating lease agreement provides for increases in annual rents based on changes in the Consumer Price Index or fixed percentage increases ranging from 3% to 7%. Commencing January 2008, the Company sublet this facility through July 2015. The sublease agreement provides for a 3% increase in annual rents. As of June 30, 2008, the Company expects to receive aggregate future minimum lease payments totaling $6.1 million (nondiscounted) over the remaining duration of the sublease agreement. In accordance with Statement of Financial Accounting Standards No. 146 (As Amended) “Accounting for Costs Associated with Exit or Disposal Activities,” the Company recorded a net charge to operating expenses of $4.1 million for exit costs when it fully ceased use of this facility in the first quarter of 2008. The net charge consisted of a $6.4 million charge for the net present value of future rent payments offset by a $2.3 million reversal of deferred rent. As of June 30, 2008, $6.2 million has been recorded as a liability for these exit costs on the condensed consolidated balance sheet with $1.0 million classified as accrued liabilities and the balance included in other long-term liabilities.

6. Litigation

The SEC issued a formal order of private investigation dated September 7, 2005, which was furnished to the Company’s legal counsel on September 29, 2005, to investigate the circumstances surrounding the Company’s restatement of its consolidated financial statements for the years ended December 31, 2002 and 2003, and for the first three quarters of 2004. The SEC’s investigation is ongoing and the Company is cooperating with the investigation.

The Company and Seragen, Inc. were named parties to Sergio M. Oliver, et al. v. Boston University, et al., a shareholder class action filed on December 17, 1998 in the Court of Chancery in the State of Delaware. The Company and Seragen were dismissed from the action, but such dismissal is subject to appeal and the Company and Seragen may have possible indemnification obligations with respect to certain defendants. On April 14, 2006, the court found for the plaintiffs on certain claims and awarded damages of approximately $4.8 million plus interest. Judgment, however, has not been entered and the matter is subject to appeal. As of June 30, 2008, the Company has not accrued an indemnification obligation based on its assessment that its responsibility for any such obligation is not probable or estimable.

In July 2007, the Salk Institute for Biological Studies (“Salk”) filed a demand for arbitration with the American Arbitration Association, seeking damages for alleged breach of contract based on Salk’s theory that it is entitled to a portion of the money paid by Eisai to the Company for Targretin related assets. Salk currently alleges damages to be $25.4 million, plus interest, if payment is made after October 13, 2008. The Company has raised a counterclaim in the arbitration with Salk seeking either a refund of $2.9 million of lasofoxifene related payments, plus interest, or an offset against any award that may be granted to Salk. The arbitration

with Salk is ongoing. A hearing on the matter is scheduled for the second half of 2008, but delays are possible and management is unable to guarantee when a final decision will be rendered. Intellectual property license disputes are subject to inherent uncertainties and there can be no assurance this arbitration will be resolved favorably to the Company or that it will not have a material adverse effect on the Company. Management is unable to assess the likelihood of an unfavorable outcome and, accordingly, no accrual has been recorded as of June 30, 2008.

On March 4, 2008, Rockefeller University (“Rockefeller”) filed suit, now proceeding in the United States District Court for the Southern District of New York against the Company alleging, among other things, a breach by the Company of its September 30, 1992 license agreement with Rockefeller, as well as other causes of action for unjust enrichment, quantum meruit, specific performance to perform an audit and declaratory relief. The complaint seeks damages of at least $1.9 million, plus alleges that Rockefeller is entitled to 25% of payments to be received by the Company in the future related to Promacta and SB-559448 or from any third party in connection with certain products (which products, according to the complaint, include LGD-4665), and 5% of future net sales of certain of the Company’s other products. The complaint requests a trial by jury, and also seeks to impose a constructive trust upon payments previously received by the Company to which Rockefeller claims it is owed a portion. The Company has filed an answer and counterclaims seeking, among other things, a judicial determination that (i) eltrombopag and the backup compound SB-559448 (including the use of such compounds) do not embody any invention(s) described or claimed in certain licensed patent rights under the September 30, 1992 license agreement between the Company and Rockefeller, (ii) Rockefeller technical information was not essential to the discovery or development of eltrombopag and the backup compound SB-559448, (iii) the Company is not liable for any additional payments under its September 30, 1992 license agreement with Rockefeller beyond any payments that the Company has already made, and (iv) the September 30, 1992 license agreement between the Company and Rockefeller was terminated in November 2007, and that subsequent to the termination of such agreement, the Company is not liable for future payments under such agreement. Discovery is scheduled to be completed in the second quarter of 2009, but delays are possible and management is unable to guarantee when a final decision will be rendered. Intellectual property license disputes are subject to inherent uncertainties and there can be no assurance this litigation will be resolved favorably to the Company or that it will not have a material adverse effect on the Company. Management is unable to assess the likelihood of an unfavorable outcome and, accordingly, no accrual has been recorded as of June 30, 2008.

In addition, from time to time the Company is subject to various lawsuits and claims with respect to matters arising out of the normal course of its business. Due to the uncertainty of the ultimate outcome of these matters, the impact on future financial results is not subject to reasonable estimates.

7. Reductions in Workforce

In December 2007, the Company entered into a plan to eliminate approximately 27 employee positions, across all functional areas, which were deemed to be no longer necessary in connection with the Company’s ongoing efforts to be a highly-focused research and development and royalty-driven biotech company. The affected employees were informed of the plan in December 2007 with an effective termination date of December 31, 2007 for the majority of the affected employees. The Company completed the plan in the first quarter of 2008. In connection with the termination plan, the Company recognized expenses of $1.1 million in the fourth quarter of 2007 which were paid in the first quarter of 2008.

ITEM 2.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Caution: This discussion and analysis may contain predictions, estimates and other forward-looking statements that involve a number of risks and uncertainties, including those discussed in Item 1A. “Risk Factors.” This outlook represents our current judgment on the future direction of our business. These statements include those related to our AVINZA royalty revenues, product returns, and product development. Actual events or results may differ materially from our expectations. For example, there can be no assurance that our revenues or expenses will meet any expectations or follow any trend(s), that we will be able to retain our key employees or that we will be able to enter into any strategic partnerships or other transactions. We cannot assure you that we will receive expected AVINZA royalties to support our ongoing business or that our internal or partnered pipeline products will progress in their development, gain marketing approval or achieve success in the market. In addition, our ongoing SEC investigation, ongoing or future arbitration, or litigation or disputes with third parties may have a material adverse effect on us. Such risks and uncertainties, and others, could cause actual results to differ materially from any future performance suggested. We undertake no obligation to release publicly the results of any revisions to these forward-looking statements to reflect events or circumstances arising after the date of this quarterly report. This caution is made under the safe harbor provisions of Section 21E of the Securities Exchange Act of 1934, as amended.

Our trademarks, trade names and service marks referenced herein include Ligand. Each other trademark, trade name or service mark appearing in this quarterly report belongs to its owner.

References to Ligand Pharmaceuticals Incorporated (“Ligand”, the “Company”, “we” or “our”) include our wholly owned subsidiaries – Ligand Pharmaceuticals (Canada) Incorporated; Ligand Pharmaceuticals International, Inc.; Seragen, Inc. (“Seragen”); and Nexus Equity VI LLC (“Nexus”).

Overview

We are an early-stage biotechnology company that focuses on discovering and developing new drugs that address critical unmet medical needs in the areas of thrombocytopenia, anemia, cancer, hormone related diseases, osteoporosis and inflammatory diseases. We aim to develop drugs that are more effective and/or safer than existing therapies, that are more convenient to administer and that are cost effective. We plan to build a profitable company by generating income from research, milestone and royalty and co-promotion revenues resulting from our collaborations with pharmaceutical partners.

On September 7, 2006, we announced the sale of ONTAK, Targretin capsules, Targretin gel, and Panretin gel to Eisai, Inc., or Eisai, and the sale of AVINZA to King Pharmaceuticals, Inc., or King. The Eisai sales transaction subsequently closed on October 25, 2006. The AVINZA sale transaction subsequently closed on February 26, 2007. Accordingly, the results for the AVINZA product line have been presented in our condensed consolidated statements of operations for the three and six months ended June 30, 2008 and 2007 as “Discontinued Operations.”

We are a party to a number of collaboration arrangements that are in the development phase, including collaborations with GlaxoSmithKline, Pfizer, TAP, and Wyeth. We received funding during the research phase of the arrangements, and receive milestone and royalty payments as products are developed and marketed by our corporate partners. See “Potential Future Revenue Sources” below. In addition, in connection with some of these collaborations, we received non-refundable up-front payments.

We have been unprofitable since our inception on an annual basis and expect to incur net losses in the future. To be profitable, we, or our partners, must successfully develop, clinically test, market and sell our products. Even if we achieve profitability, we cannot predict the level of that profitability or whether we will be able to sustain profitability. We expect that our operating results will fluctuate from period to period as a result of differences in the timing and amounts of revenues, including royalties expected to be earned in the future from King on sales of AVINZA, expenses incurred, collaborative arrangements and other sources. Some of these fluctuations may be significant.

Ligand Product Development Programs

We are developing several proprietary products for which we have worldwide rights for a variety of cancers, thrombocytopenia and inflammation and hormonal disorders as discussed below.

Thrombopoietin (TPO) Research Programs

In our TPO program, we seek to develop our own drug candidates that mimic the activity of thrombopoietin for use in the treatment or prophylaxis of thrombocytopenia with indications in a variety of conditions including Idiopathic Thrombocytopenic Purpura (ITP), cancer, hepatitis C and other disorders of blood cell formation. These are large markets with unmet medical needs. For example, the U.S. prevalence of a few target diseases with thrombocytopenia is 200,000 patients with ITP, 1.3 million cancer patients receiving chemotherapy and 2.7 million patients with hepatitis C.

Thrombocytopenia can be caused by insufficient platelet production, splenic sequestration of platelets or increased destruction of platelets predominantly by a patient’s own immune system. Thrombocytopenia in cancer patients can be treatment-related (chemotherapy) or cancer-related. Platelet transfusion is the standard of care for thrombocytopenia. However, repeated transfusions can result in the development of platelet alloantibodies that could significantly reduce the effectiveness of transfusions. In addition, patients are at increased risk of infections and allergic reactions. Currently, there is only one approved drug (Neumega) for the prevention of severe thrombocytopenia and the reduction of the need for platelet transfusions in patients with nonmyeloid malignancies. We believe that there is a substantial medical need for improved platelet enhancing agents for use in the treatment of thrombocytopenia due to the significant side effects seen with current therapies. Thus, a small molecule TPO mimetic with no apparent immunogenic potential and oral activity that may facilitate dosing may provide an attractive therapeutic profile for a major unmet medical need.

In February 2004, we began to research and then selected a TPO mimetic, LGD-4665, as a clinical candidate and completed preclinical studies in 2006. We completed single and multi-dose Phase I safety and efficacy studies in the fourth quarter of 2007. The results showed that both single and multi-doses of this molecule led to dose dependent increases of platelets in up to 83% in the healthy volunteers. The results also demonstrated that the molecule was safe and well tolerated at all dose levels and displayed reliable absorption with dose proportional pharmacokinetics. Phase I clinical results were presented at the American Society of Hematology meeting in December 2007 and at a meeting of the European Hematology Association in June 2008.

Additional Phase I studies evaluating weekly administration, drug-drug interaction, as well as liver impairment impact on food and absorption are expected to be completed in the second half of 2008. Also, a Phase II clinical trial with LGD-4665 in ITP was initiated in April 2008. The 24-patient, double-blind placebo-controlled trial is designed to evaluate the safety and efficacy of LGD-4665 in adult patients. During 2008, we expect to initiate additional clinical studies with LGD-4665.

We may pursue the therapeutic specialty applications emerging from our TPO mimetics internally, but may seek collaborations with major pharmaceutical companies to exploit broader clinical applications.

Selective Androgen Receptor Modulators (SARM) Research and Development Programs

We are pioneering the development of tissue selective SARMs, a novel class of non-steroidal, orally active molecules that selectively modulate the activity of the androgen receptor in different tissues, providing a wide range of opportunities for the treatment of many diseases and disorders in both men and women. Tissue-selective androgen receptor agonists may provide utility in the treatment of patients with frailty, osteoporosis, sexual dysfunction and hypogonadism. Tissue-selective androgen receptor antagonists may provide utility in the treatment of patients with prostate cancer, acne, androgenetic alopecia and other diseases. The use of androgen antagonists has shown efficacy in the treatment of prostate cancer, with three androgen antagonists currently approved by the FDA for use in the treatment of the disease. However, we believe there is a substantial medical need for improved androgen modulators for use in the treatment of prostate cancer due to the significant side effects seen with currently available drugs.

We have assembled an extensive SARM compound library and, we believe, one of the most experienced androgen receptor drug discovery teams in the pharmaceutical industry. We may pursue the specialty applications emerging from SARMs internally, but may seek collaborations with major pharmaceutical companies to exploit broader clinical applications.

As part of our joint development and research alliance with TAP, we exercised an option to select for development one compound and a back-up, LGD-3303 and LGD-3129, respectively, out of a pool of compounds available for development. Preclinical studies we have conducted with LGD-3303 indicate that the compound may have utility for osteoporosis, sexual dysfunction, frailty and hypogonadism. In vivo studies in rodents indicate a favorable profile with anabolic effects on bone, but an absence of the prostatic hypertrophy that occurs with the currently marketed androgens.

After the conclusion of our research alliance with TAP, we discovered SARM compounds with androgen effects in bone and skeletal muscle, but with little or no activity in the prostate, oil-secreting glands in the skin, or female genitalia. Preclinical studies conducted on one of these compounds, LGD-4033, suggest that the compound may have favorable activity in the treatment of cachexia, frailty, osteoporosis, hypogonadism as well as other disorders. We expect to file an Investigational New Drug (IND) application for LGD-4033 in the fourth quarter of 2008.

Erythropoiein (EPO) Research Program

We are developing small molecule agonists for the EPO receptor. EPO stimulates the differentiation of bone marrow stem cells to form red blood cells. Various recombinant human EPO derivatives are marketed for the treatment of anemia due to renal failure or cancer chemotherapy (e.g., Aranesp, Epogen, Eprex, and Procrit). We believe that a small molecule agonist for the EPO receptor would provide additional benefit in the treatment of anemia and the convenience of oral administration compared to recombinant human protein therapeutics. EPO and TPO act on the same bone marrow hematopoietic stem cell to guide the development of blood cells. We expect that our prior experience in developing small molecule TPO mimetic drugs will lead to increased efficiency in discovering small molecule EPO mimetic drugs.

Selective Glucocorticoid Receptor Modulators (SGRM) Research and Development Program

We are developing SGRMs for inflammation, cancer indications and other therapeutic applications. We have a library of compounds that we are optimizing with the goal to identify one or more compounds to enter human trials. Our most advanced compound LGD-5552 was on track to enter clinical trials in 2007; however Good Laboratory Practice studies failed to demonstrate the desired preclinical safety characteristics for a drug to treat rheumatoid arthritis. We decided in the first quarter of 2007 not to proceed with the development of LGD-5552. We have identified SGRM compounds that are chemically distinct from LGD-5552. Our studies of these compounds are in the research stage.

Collaborative Research and Development Programs

We may receive royalties on product candidates resulting from our research and development collaboration arrangements with third party pharmaceutical companies if and to the extent any such product candidate is ultimately approved by the FDA and successfully marketed. Our collaborations are discussed below.

GlaxoSmithKline Collaboration – Eltrombopag

Eltrombopag is an oral, small molecule drug that mimics the activity of thrombopoietin, a protein factor that promotes growth and production of blood platelets. Eltrombopag is a product candidate that resulted from our collaboration with SmithKline Beecham (now GlaxoSmithKline). At the European Hematology Association meeting on June 15, 2008, GlaxoSmithKline announced positive Phase III data from the ongoing, open label EXTEND (Eltrombopag eXTENded Dosing) study. The results suggest that eltrombopag sustains increased platelet counts during long-term treatment for patients with Idiopathic Thrombocytopenia Purpura (ITP). GlaxoSmithKline also announced positive Phase II data from the ongoing REPEAT trial (Repeat ExPosure to Eltrombopag in Adults with Idiopathic Thrombocytopenic Purpura). A decrease in bleeding was observed in patients with chronic ITP, generating similar platelet counts with each subsequent cycle.

GlaxoSmithKline submitted a New Drug Application, or NDA, for approval to market eltrombopag (PROMACTA^TM/REVOLADE^TM) on December 18, 2007. Two pivotal trials, one Phase III trial and one Phase II trial, were submitted to support the NDA submission. On March 3, 2008, the FDA accepted for filing and review GlaxoSmithKline’s NDA and granted a priority review status for PROMACTA^® (eltrombopag) for treatment of chronic short-term ITP. Priority review is granted by the FDA for a treatment that addresses significant unmet medical needs or has the potential to provide a significant improvement compared to marketed products, and results in a review period of six months from the date of NDA submission. On May 30, 2008, the FDA’s Oncology Drugs Advisory Committee (ODAC) panel unanimously voted (16-0) that PROMACTA demonstrated a favorable risk-benefit profile for the short-term treatment of patients with chronic ITP. The FDA has extended the priority review period for GlaxoSmithKline’s NDA for PROMACTA for the short-term treatment of chronic ITP. The Prescription Drug User Fee Act action date has been extended to September 19, 2008.

If approved, PROMACTA would be the first oral thrombopoietin receptor agonist therapy for the short-term treatment of previously treated patients with chronic ITP to increase platelet counts and reduce or prevent bleeding. Eltrombopag is currently in a Phase III trial for the long-term treatment of ITP, and expects MAA and NDA submissions for the long-term treatment of ITP in 2008. GlaxoSmithKline reported positive Phase II data in patients with thrombocytopenia associated with hepatitis C and initiated two Phase III trials in patients with hepatitis C in the fourth quarter of 2007. A Phase II study in patients with chemotherapy-induced thrombocytopenia has been completed, a Phase III study is ongoing in chronic liver disease and a Phase I study is ongoing in patients with sarcoma receiving the adriamycin and ifosfamide regimen.

If annual net sales of eltrombopag are less than $100.0 million, we will earn a royalty of 5% on such net sales. If eltrombopag’s annual net sales are between $100.0 million and $200.0 million, we will earn a royalty of 7% on the portion of net sales between $100.0 million and $200.0 million, and if annual net sales are between $200.0 million and $400.0 million, we will earn a royalty of 8% on the portion of net sales between $200.0 million and $400.0 million. If annual sales exceed $400.0 million, we will earn a royalty of 10% on the portion of net sales exceeding $400.0 million. Our right to receive all of the royalty payments from GlaxoSmithKline will be subject to the outcome of the ongoing lawsuit between us and Rockefeller University, or Rockefeller. On March 4, 2008, Rockefeller filed suit against us alleging, among other things, that Rockefeller is entitled to 25% of payments to be received by us in the future related to Promacta. We have filed an answer and counterclaims seeking, among other things, a judicial determination that we are not liable for any additional payments under our September 30, 1992 license agreement with Rockefeller beyond any payments that we have already made. Intellectual property license disputes are subject to inherent uncertainties and there can be no assurance this litigation will be resolved favorably to us or that it will not have a material adverse effect on us. Our management is unable to assess the likelihood of an unfavorable outcome and, accordingly, no accrual has been recorded as of June 30, 2008.

Wyeth Collaboration – bazedoxifene and bazedoxifene in combination with PREMARIN

Bazedoxifene (Viviant) is a product candidate that resulted from our collaboration with Wyeth. Bazedoxifene is a synthetic drug that was specifically designed to reduce the risk of osteoporotic fractures while at the same time protecting breast and uterine tissue. In June 2006, Wyeth submitted an NDA for bazedoxifene to the FDA for the prevention of postmenopausal osteoporosis. The FDA issued an approvable letter for bazedoxifene for this indication in April 2007. Wyeth received a second approvable letter in December 2007 and plans to have further discussions with the FDA to discuss the issues raised for the prevention indication. Wyeth also submitted a second NDA for bazedoxifene in the U.S. in July 2007 for the treatment of osteoporosis and an MAA to EMEA in September 2007 for the prevention and treatment of osteoporosis. Wyeth received a third approvable letter in the second quarter for Viviant for the treatment of osteoporosis. In the letter, the FDA requested information similar to that outlined in its approvable letter for bazedoxifene’s NDA for the prevention of postmenopausal osteoporosis issued in December 2007. This included further analyses concerning the incidence of stroke and venous thrombotic events. Wyeth expects to file a response to FDA by the end of 2008.

Wyeth is also developing bazedoxifene in combination with PREMARIN (Aprela) as a progesterone-free treatment for menopausal symptoms. Two Phase III studies with bazedoxifene/conjugated estrogens (Aprela), showed reduced number and severity of hot flashes in symptomatic postmenopausal women by up to 80 percent, when compared with placebo. Wyeth expects to file an NDA in the second half of 2009.

We previously sold to Royalty Pharma AG, or Royalty Pharma, the rights to a total of 3.0% of net sales of bazedoxifene for a period of ten years following the first commercial sale of each product. After giving effect to the royalty sale, we will receive 0.5% of the first $400.0 million in net annual sales. If net annual sales are between $400.0 million and $1.0 billion, we will receive a net royalty of 1.5% on the portion of net sales between $400.0 million and $1.0 billion, and if annual sales exceed $1.0 billion, we will receive a net royalty of 2.5% on the portion of net sales exceeding $1.0 billion. Additionally, the royalty owed to Royalty Pharma may be reduced by one third if net product sales exceed certain thresholds across all indications.

Pfizer Collaboration – Lasofoxifene

Lasofoxifene is a product candidate that resulted from our collaboration with Pfizer. In August 2004, Pfizer submitted an NDA to the FDA for lasofoxifene for the prevention of osteoporosis in postmenopausal women. In September 2005, Pfizer announced the receipt of a non-approvable letter from the FDA for the prevention of osteoporosis. In December 2004, Pfizer filed a supplemental NDA for the use of lasofoxifene for the treatment of vaginal atrophy. In February 2006, Pfizer announced the receipt of a non-approvable letter from the FDA for vaginal atrophy. Pfizer has also announced that lasofoxifene is being developed for the treatment of osteoporosis. In April 2007, Pfizer announced completion of the Postmenopausal Evaluation and Risk Reduction with lasofoxifene (PEARL) Phase III study with favorable efficacy and safety. Pfizer submitted an NDA and an MAA for osteoporosis treatment in December 2007 and January 2008, respectively.

Under the terms of our agreement with Pfizer, we are entitled to receive royalty payments equal to 6% of net sales of lasofoxifene worldwide for any indication. We previously sold to Royalty Pharma the rights to a total of 3% of net sales of lasofoxifene for a period of ten years following the first commercial sale of lasofoxifene. Accordingly, we will receive approximately 3% of worldwide net annual sales of lasofoxifene.

TAP Collaboration – LGD-2941

LGD-2941, a selective androgen receptor modulator, or SARM, was selected as a clinical candidate during our collaboration with TAP. SARMs, such as LGD-2941, may contribute to the treatment of diseases including hypogonadism (low testosterone), sexual dysfunction, osteoporosis, frailty and cancer cachexia. Phase I clinical trials were completed in the fourth quarter of 2007. The agreement further provides for milestones moving through the development stage and royalties ranging from 6.0% to 12.0% on annual net sales of drugs resulting from the collaboration. TAP assigned the current SARM agreement to Abbott in the second quarter of 2008 upon the closing of the transaction between Takeda and Abbott to separate portions of the TAP business between the two parties.

Results of Operations

Total revenues for the three and six months ended June 30, 2008 were $4.8 million and $9.7 million, respectively, compared to $1.4 million and $1.6 million for the same 2007 periods. Operating loss from continuing operations for the three and six months ended June 30, 2008 was $5.6 million and $17.5 million, respectively, compared to $14.4 million and $43.4 million for the same 2007 periods.

AVINZA Royalty Revenue

In connection with the sale of AVINZA, King is required to pay us a royalty on net sales of AVINZA (see Note 2 to the condensed consolidated financial statements). In accordance with the AVINZA Purchase Agreement, royalties are required to be reported and paid to us within 45 days of quarter-end during the 20 month period following the closing of the sale transaction (February 26, 2007). Thereafter, royalties will be paid on a calendar year basis. Such royalties are recognized in the quarter reported. Since there is a one quarter lag from when King recognizes AVINZA net sales to when King reports those sales and the corresponding royalties to us, we recognized AVINZA royalty revenues beginning in the second quarter of 2007. Royalty revenues were $4.8 million and $9.7 million, respectively, for the three and six months ended June 30, 2008 and $1.4 million for the three and six months ended June 30, 2007.

Collaborative Research and Development and Other Revenue

We recorded no collaborative research and development and other revenues for the three and six months ended June 30, 2008 and for the three months ended June 30, 2007. Collaborative research and development and other revenues for the six months ended June 30, 2007 related to a $0.2 million milestone earned from Wyeth.

Research and Development Expenses

The major components of research and development expenses are as follows (in thousands):


	Three Months Ended June 30,				Six Months Ended June 30,
	2008		2007		2008		2007
Internal research programs	$	4,164	$	4,916	$	7,852	$	12,266
Development		2,213		3,835		5,690		12,087

Total research and development	$	6,377	$	8,751	$	13,542	$	24,353

Research and development expenses for the six months ended June 30, 2007 include one-time severance benefits and stock compensation charges of $5.7 million incurred in connection with our restructuring (see Note 7 to the condensed consolidated financial statements) and one-time stock compensation charges of $0.8 million incurred in connection with the equitable adjustment of stock options (see Note 1 to the condensed consolidated financial statements). Excluding the impact of one-time severance benefits and stock compensation charges, the decrease in research and development expenses reflects reduced costs primarily due to lower headcount related expenses in connection with our restructuring. This reduction was partially offset by increased research costs associated with our SARM and EPO programs.

A summary of our significant internal research and development programs as of June 30, 2008 is as follows:


Program	Disease/Indication	Development Phase
LGD-4665 (Thrombopoietin oral mimetic)	Idiopathic Thrombocytopenia Purpura, myelodysplastic syndrome, Hepatitis C, other thrombocytopenias	Phase II

Selective androgen receptor modulators (agonists)	Hypogonadism, osteoporosis, sexual dysfunction, frailty, cachexia	Pre-clinical

Small molecule EPO receptor agonists	Chemotherapy-induced anemia, anemia due to kidney failure	Research

Selective glucocorticoid receptor modulators	Inflammation, cancer	Research

Selective androgen receptor modulators (antagonists)	Prostate cancer	Research

We do not provide forward-looking estimates of costs and time to complete our ongoing research and development projects, as such estimates would involve a high degree of uncertainty. Uncertainties include our inability to predict the outcome of complex research, our inability to predict the results of clinical studies, regulatory requirements placed upon us by regulatory authorities such as the FDA and EMEA, our inability to predict the decisions of our collaborative partners, our ability to fund research and development programs, competition from other entities of which we may become aware of in future periods, predictions of market potential from products that may be derived from our research and development efforts, and our ability to recruit and retain personnel or third-party research organizations with the necessary knowledge and skills to perform certain research. Refer to “Item 1A. Risk Factors” for additional discussion of the uncertainties surrounding our research and development initiatives.

General and Administrative Expenses

General and administrative expenses were $4.5 million and $14.7 million for the three and six months ended June 30, 2008 compared to $7.5 million and $21.7 million, respectively, for the same 2007 periods. General and administrative costs for the three months ended June 30, 2008 were lower when compared to the same 2007 period primarily due to lower headcount related expenses of $1.0 million, reduced outside consulting and audit fees of $0.9 million, and reduced occupancy costs of $1.2 million in connection with our restructuring and subleasing of an office and research facility in the first quarter of 2008. General and administrative costs

for the six months ended June 30, 2008 were lower when compared to the same 2007 period primarily due to lower headcount related expenses of $6.4 million (which included a one-time severance benefits $3.8 million in connection with our restructuring, and stock compensation charges $1.0 million incurred in connection with the equitable adjustment of stock options), reduced outside consulting and audit fees of $2.7 million and reduced occupancy cost of $1.7 million. These reductions were partially offset by a first quarter 2008 charge of $4.1 million for exit costs when we fully ceased use of one of our leased facilities.

Accretion of Deferred Gain on Sale Leaseback

On November 9, 2006, we sold real property located in San Diego, California for a sale price of $47.6 million. This property includes our corporate headquarter building totaling approximately 82,500 square feet, the land on which the building is situated, and two adjacent vacant lots. As part of the sale transaction, we agreed to leaseback the building for a period of 15 years. In accordance with SFAS 13, Accounting for Leases, we recognized an immediate pre-tax gain on the sale transaction of $3.1 million and deferred a gain of $29.5 million on the sale of the building. The deferred gain is recognized on a straight-line basis over the 15 year term of the lease at a rate of approximately $2.0 million per year. The amount of the deferred gain recognized for each of the three and six months ended June 30, 2008 and 2007 was $0.5 million and $1.0 million, respectively.

Interest Income

Interest income was $0.5 million and $1.5 million for the three and six months ended June 30, 2008, respectively, compared to $2.5 million and $5.8 million for the same 2007 periods. The decrease for the three and six months ended June 30, 2008 is due to lower cash and investment balances as a result of the $252.7 million cash dividend paid on April 19, 2007, as well as lower interest rates.

Income Taxes

We had losses from continuing operations for the three and six months ended June 30, 2008 and 2007 resulting in an income tax benefit generated by the loss from continuing operations of $1.0 million and $2.8 million for the three and six months ended June 30, 2008, respectively, compared to $4.2 million and $13.4 million, respectively, for the same 2007 periods. This income tax benefit captures the deemed use of losses from continuing operations used to offset the income tax expense from discontinued operations.

Discontinued Operations

Oncology Product Line

On September 7, 2006, we and Eisai Inc., a Delaware corporation and Eisai Co., Ltd., a Japanese company (which we collectively refer to as Eisai), entered into a purchase agreement, or the Oncology Purchase Agreement, pursuant to which Eisai agreed to acquire all of our worldwide rights in and to our oncology products, including, among other things, all related inventory, equipment, records and intellectual property, and assume certain liabilities as set forth in the Oncology Purchase Agreement. The Oncology product line included our four marketed oncology drugs: ONTAK, Targretin capsules, Targretin gel and Panretin gel.

Prior to the Oncology sale, we recorded accruals for rebates, chargebacks, and other discounts related to Oncology products when product sales were recognized as revenue under the sell-through method. Upon the Oncology sale, we accrued for rebates, chargebacks, and other discounts related to Oncology products in the distribution channel which had not sold-through at the time of the Oncology sale and for which we retained the liability subsequent to the Oncology sale. Our accruals for Oncology rebates, chargebacks, and other discounts total $0.5 million as of June 30, 2008 and are included in accrued liabilities in the condensed consolidated balance sheet.

Additionally, and pursuant to the terms of the Oncology Purchase Agreement, we retained the liability for returns of product from wholesalers that had been sold by us prior to the close of the transaction. Accordingly, as part of the accounting for the gain on the sale of the Oncology product line, we recorded a reserve for Oncology product returns. Under the sell-through revenue recognition method, we previously did not record a reserve for returns from wholesalers. Our reserve for Oncology returns is $3.5 million as of June 30, 2008 and is included in accrued liabilities in the condensed consolidated balance sheet.

In the three and six months ended June 30, 2008, we recognized a $0.7 million pre-tax loss and $0.2 million pre-tax gain, respectively, due to subsequent changes in certain estimates and liabilities recorded as of the sale date.

AVINZA Product Line

On September 6, 2006, we and King Pharmaceuticals, Inc., or King, entered into a purchase agreement, or the AVINZA Purchase Agreement, pursuant to which King agreed to acquire all of our rights in and to AVINZA in the United States, its territories and Canada, including, among other things, all AVINZA inventory, records and related intellectual property, and assume certain liabilities as set forth in the AVINZA Purchase Agreement, which we collectively refer to as the Transaction.

Pursuant to the AVINZA Purchase Agreement, at the closing on February 26, 2007, which we refer to as the Closing Date, we received $280.4 million in net cash proceeds, which is net of $15.0 million that was funded into an escrow account to support any potential indemnification claims made by King following the closing of the Transaction.

In connection with the sale, we agreed to indemnify King for a period of 16 months after the closing of the Transaction for a number of specified matters, including any breach of our representations, warranties or covenants contained in the Avinza Purchase Agreement. In certain defined cases, our obligation to indemnify King extends for a period of 30 months following the closing of the Transaction. Under our agreement with King, $15.0 million of the total upfront cash payment was deposited into an escrow account to secure our indemnification obligations to King following the closing. Of the escrowed amount, $7.5 million was released to us in August 2007, and the remaining $7.5 million, plus interest of $0.6 million, was released to us in February 2008 and recorded as gain on sale of our AVINZA product line.

Prior to the AVINZA sale, we recorded accruals for rebates, chargebacks, and other discounts related to AVINZA products when product sales were recognized as revenue under the sell-through method. Upon the AVINZA sale, we accrued for rebates, chargebacks, and other discounts related to AVINZA products in the distribution channel which had not sold-through at the time of the AVINZA sale and for which we retained the liability subsequent to the sale. Our accruals for AVINZA rebates, chargebacks, and other discounts total $0.3 million as of June 30, 2008 and are included in accrued liabilities in the condensed consolidated balance sheet.

Additionally, and pursuant to the terms of the AVINZA Purchase Agreement, we retained the liability for returns of product from wholesalers that had been sold by us prior to the close of the Transaction. Accordingly, as part of the accounting for the gain on the sale of AVINZA, we recorded a reserve for AVINZA product returns. Under the sell-through revenue recognition method, we previously did not record a reserve for returns from wholesalers. Our reserve for AVINZA returns is $12.2 million as of June 30, 2008 and is included in accrued liabilities in the condensed consolidated balance sheet.

In the three and six months ended June 30, 2008, we recognized a $1.2 million pre-tax loss and $7.2 million pre-tax gain, respectively, due to subsequent changes in certain estimates and liabilities recorded as of the sale date.

Income Taxes

We recorded an income tax benefit from discontinued operations of $0.3 million and income tax expense of $3.2 million for the three and six months ended June 30, 2008, respectively, compared to income tax expense of $2.3 million and $27.1 million for the same periods in 2007. The tax benefit recorded for the three months ended June 30, 2008 resulted from losses generated by changes in estimates of certain assets and liabilities recorded as of the sale date of our AVINZA and Oncology product lines. The tax expense for the six months ended June 30, 2008 and for the three and six months ended June 30, 2007 reflects the net tax due on taxable income that was generated by the gain on sale of our AVINZA product line, changes in estimates of certain assets and liabilities recorded as of the sale date of our AVINZA and Oncology product lines, and the release of escrow funds from the sale of our AVINZA and Oncology product lines.

Liquidity and Capital Resources

We have financed our operations through private and public offerings of our equity securities, collaborative research and development and other revenues, issuance of convertible notes, product sales and the subsequent sales of our commercial assets, capital and operating lease transactions, accounts receivable factoring and equipment financing arrangements and investment income. In March 2007, we announced that our board of directors had authorized a stock repurchase program under Rule 10b-18 of the

Securities Exchange Act of 1934, as amended, of up to $100 million of shares of our common stock in the open market and negotiated purchases over a period of 12 months. During the six months ended June 30, 2008, we repurchased a total of 0.3 million shares of our common stock totaling $1.6 million. We have repurchased an aggregate of 6.5 million shares of our common stock totaling $41.2 million prior to the close of the repurchase period on March 31, 2008.

Working capital was $51.5 million at June 30, 2008 compared to $59.0 million at December 31, 2007. Cash, cash equivalents, short-term investments and restricted investments totaled $86.4 million as of June 30, 2008 compared to $95.8 million as of December 31, 2007. We primarily invest our cash in United States government and investment grade corporate debt securities. Restricted investments as of June 30, 2008 consist of certificates of deposit held with a financial institution as collateral under equipment financing and third-party service provider arrangements.

On July 19, 2007, we purchased $5.0 million of commercial paper issued by Golden Key Ltd. While the investment was highly-rated and within our investment policy at the time of purchase, during the third quarter of 2007, large credit rating agencies downgraded the quality of this security. In addition, as a result of not meeting certain liquidity covenants, the assets were assigned to a trustee who established a committee of the largest senior credit holders to determine the next steps. Subsequently, Golden Key defaulted on its obligation to settle the security on the stated maturity date of October 10, 2007. Based on available information, we estimate that we will be able to recover approximately $2.4 million on this security. Accordingly, we adjusted the carrying value by recording an impairment loss of $0.8 million and $1.3 million during the three and six months ended June 30, 2008, respectively. As a result of ongoing volatility in the liquidity of the capital markets, we may be exposed to additional impairment for this investment until it is fully recovered or disposed of.

Based on our revised business model, we believe our currently available cash, cash equivalents, and short-term investments as well as our current and future royalty revenues will be sufficient to satisfy our anticipated operating and capital requirements through at least the next twelve months. Our future operating and capital requirements will depend on many factors, including, but not limited to: the pace of scientific progress in our research and development programs; the magnitude of these programs; the scope and results of preclinical testing and clinical trials; the time and costs involved in obtaining regulatory approvals; the costs involved in preparing, filing, prosecuting, maintaining and enforcing patent claims; competing technological and market developments; the amount of royalties on sales of AVINZA we receive from King; and the efforts of our collaborative partners. We will also consider additional equipment financing arrangements similar to arrangements currently in place.

Operating Activities

Operating activities used cash of $13.4 million for the six months ended June 30, 2008 compared to $74.7 million for the same 2007 period. The use of cash for the six months ended June 30, 2008 reflects a net loss of $10.4 million adjusted for the gain on the sale of our AVINZA and Oncology product lines of $7.2 million and $0.2 million, respectively, and the accretion of deferred gain on the sale leaseback of the building of $1.0 million, offset by the recognition of contract termination costs of $4.1 million, stock-based compensation expense of $1.8 million, a $0.6 million loss on write-off of fixed assets, $1.3 million realized loss on investment and depreciation and amortization of assets of $0.5 million. The use of cash for the six months ended June 30, 2008 is further impacted by changes in operating assets and liabilities due primarily to decreases in accounts payable and accrued liabilities of $5.7 million partially offset by a decrease in other current assets of $2.6 million. The decrease in accounts payable and accrued liabilities is primarily due to the payment of severance related to the December 2007 reduction in workforce.

The use of cash for the six months ended June 30, 2007 reflects net income of $274.5 million, adjusted by $313.5 million in items to reconcile net income to net cash used in operations. These reconciling items primarily reflect the gain on the sale of our AVINZA product line of $310.4 million, the adjustment to gain on the sale of our Oncology product line of $9.8 million and the accretion of deferred gain on sale leaseback of building of $1.0 million, partially offset by the recognition of $6.1 million of stock-based compensation expense, depreciation and amortization of assets of $0.9 million, the write-off of assets of $0.7 million and co-promote termination expense of $1.4 million.

Cash used in operating activities in 2008 includes $7.3 million, net used in discontinued operations. This compares to net cash used in discontinued operations of $320.2 million for the same 2007 period.

Investing Activities

Investing activities used cash of $31.8 million for the six months ended June 30, 2008 compared to $332.6 million of cash provided by investing activities for the same 2007 period.

Cash used for the six months ended June 30, 2008 primarily reflects the net purchases of short term investments of $39.5 million partially offset by the release from escrow of proceeds from the sale of our AVINZA product line in the amount of $8.1 million.

Cash provided for the six months ended June 30, 2007 primarily reflects proceeds from the sale of our AVINZA product line of $281.9 million, the release of $10.0 million of proceeds held in escrow from the sale of the Oncology product line, the decrease of restricted cash of $39.1 million which was held in escrow as of December 31, 2006 and released in January 2007 to repay our loan with King, and net proceeds from sales of short-term investments of $1.7 million.

Cash provided by investing activities for the six months ended June 30, 2008 includes $8.1 million provided by discontinued operations from the release from escrow of proceeds from the sale of the AVINZA product line. Cash provided by investing activities for the same 2007 period includes $291.9 million provided by discontinued operations from the sale of the AVINZA product line and release of the escrow from the sale of our Oncology product line.

Financing Activities

Financing activities used cash of $2.5 million for the six months ended June 30, 2008 compared to $312.7 million for the same 2007 period.

Cash used for the six months ended June 30, 2008 primarily reflects repurchases of our common stock of $1.6 million and payments under equipment financing obligations of $0.9 million.

On March 22, 2007, we announced a $2.50 per share special cash dividend. The aggregate amount of $252.7 million was paid on April 19, 2007 to shareholders of record as of April 5, 2007. In addition to the cash dividend, our Board of Directors authorized up to $100.0 million in share repurchases over the subsequent 12 months. For the six months ended June 30, 2007, we repurchased 3.8 million shares of our common stock totaling $25.4 million.

None of the cash used in financing activities for the six months ended June 30, 2008 and 2007 relates to discontinued operations.

Certain of our property and equipment is pledged as collateral under various equipment financing arrangements. As of June 30, 2008, $1.2 million was outstanding under such arrangements with $1.0 million classified as current. Our equipment financing arrangements have terms of four years with interest ranging from 8.04% to 10.11%.

Leases and Off-Balance Sheet Arrangements

We lease our office and research facilities under operating lease arrangements with varying terms through November 2021. The agreements provide for increases in annual rents based on changes in the Consumer Price Index or fixed percentage increases ranging from 3% to 7%. Commencing January 2008, we also subleased a portion of our facilities through July 2015. The sublease agreement provides for a 3% increase in annual rents.

Contractual Obligations

As of June 30, 2008, future minimum payments due under our contractual obligations are as follows (in thousands):


	Payments Due by Period
	Total		Less than 1 year		1-3 years		3-5 years		After 5 years
Capital lease obligations⁽¹⁾	$	1 ,321	$	1,044	$	277	$	—	$	—
Operating lease obligations⁽²⁾		64,954		5,002		10,459		11,096		38,397
Consulting agreements		521		521		—		—		—
Co-promote termination liability⁽³⁾		—		—		—		—		—

Total contractual obligations	$	66,796	$	6,567	$	10,736	$	11,096	$	38,397


⁽¹⁾ Includes interest payments as follows:	$	78	$	66	$	12	$	—	$	—

⁽²⁾

We lease an office and research facility under an operating lease arrangement through July 2015. Commencing January 2008, we sublet this facility through July 2015. The sublease agreement provides for a 3% increase in annual rents. As of June 30, 2008, we expect to receive aggregate future minimum lease payments totaling $6.1 million (nondiscounted) over the duration of the sublease agreement as follows: less than one year, $0.8 million; one to three years, $1.7 million; three to five years, $1.8 million; and after five years, $1.8 million.

⁽³⁾

Our co-promote termination obligation to Organon was assumed by King pursuant to the AVINZA Purchase Agreement. However, as Organon did not consent to the legal assignment of the obligation to King, we remain liable to Organon in the event of King’s default of the obligation. As of June 30, 2008, the total estimated amount of the obligation is $109.9 million on an undiscounted basis.

As of June 30, 2008, we have net open purchase orders (defined as total open purchase orders at year end less any accruals or invoices charged to or amounts paid against such purchase orders) totaling approximately $5.1 million. We plan to spend approximately $0.1 million on capital expenditures during the remainder of 2008.

ITEM 3.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

At June 30, 2008, our investment portfolio included fixed-income securities of $57.2 million. These securities are subject to interest rate risk and will decline in value if interest rates increase. However, due to the short duration of our investment portfolio, an immediate 10% change in interest rates is not expected to have a material impact on our financial condition, results of operations or cash flows. At June 30, 2008, we also have certain equipment financing arrangements with variable rates of interest. Due to the relative insignificance of such arrangements, however, an immediate 10% change in interest rates would have no material impact on our financial condition, results of operations, or cash flows. Declines in interest rates over time will, however, reduce our interest income, while increases in interest rates over time will increase our interest expense.

We do not have a significant level of transactions denominated in currencies other than U.S. dollars and as a result we have limited foreign currency exchange rate risk. The effect of an immediate 10% change in foreign exchange rates would have no material impact on our financial condition, results of operations or cash flows.

ITEM 4.

CONTROLS AND PROCEDURES

Under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, we conducted an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended, or the Exchange Act, as of the end of the period covered by this report, which we refer to as the Evaluation Date. Based on this evaluation, our principal executive officer and principal financial officer concluded as of the Evaluation Date that our disclosure controls and procedures were effective such that the information relating to us, including our consolidated subsidiaries, required to be disclosed in our SEC reports (i) is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms, and (ii) is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure.

Under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, we conducted an evaluation of any changes in our internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) that occurred during our most recently completed fiscal quarter. Based on that evaluation, our principal executive officer and principal financial officer concluded that there has not been any change in our internal control over financial reporting during that quarter that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

PART

II. OTHER INFORMATION

ITEM 1.

LEGAL PROCEEDINGS

The SEC issued a formal order of private investigation dated September 7, 2005, to investigate the circumstances surrounding restatement of our consolidated financial statements for the years ended December 31, 2002 and 2003, and for the first three quarters of 2004. The SEC’s investigation is ongoing and we are cooperating with the investigation.

We and Seragen, Inc., our subsidiary, were named parties to Sergio M. Oliver, et al. v. Boston University, et al., a shareholder class action filed on December 17, 1998 in the Court of Chancery in the State of Delaware. We and Seragen were dismissed from the action, but such dismissal is subject to appeal and we and Seragen may have possible indemnification obligations with respect to certain defendants. On April 14, 2006, the court found for the plaintiffs on certain claims and awarded damages of approximately $4.8 million plus interest. Judgment, however, has not been entered and the matter is subject to appeal. As of June 30, 2008, we have not accrued an indemnification obligation based on our assessment that our responsibility for any such obligation is not probable or estimable.

Salk filed a demand for arbitration in July 2007 with the American Arbitration Association, seeking damages for alleged breach of contract based on Salk’s theory that it is entitled to a portion of the money paid by Eisai to us for Targretin related assets. Salk currently alleges damages to be $25.4 million, plus interest, if payment is made after October 13, 2008. We have raised a counterclaim in the arbitration with Salk seeking either a refund of $2.9 million of lasofoxifene related payments, plus interest, or an offset against any award that may be granted to Salk. The arbitration with Salk is ongoing. A hearing on the matter is scheduled for the second half of 2008, but delays are possible and we are unable to guarantee when a final decision will be rendered. Intellectual property license disputes are subject to inherent uncertainties and there can be no assurance this arbitration will be resolved favorably to us or that it will not have a material adverse effect on us. Our management is unable to assess the likelihood of an unfavorable outcome and, accordingly, no accrual has been recorded as of June 30, 2008.

On March 4, 2008, Rockefeller filed suit, now proceeding in the United States District Court for the Southern District of New York, against us alleging, among other things, a breach by us of our September 30, 1992 license agreement with Rockefeller, as well as other causes of action for unjust enrichment, quantum meruit, specific performance to perform an audit and declaratory relief. The complaint seeks damages of at least $1.9 million, plus alleges that Rockefeller is entitled to 25% of payments to be received by us in the future related to Promacta and SB-559448 or from any third party in connection with certain products (which products, according to the complaint, include LGD-4665), and 5% of future net sales of certain of our other products. The complaint requests a trial by jury, and also seeks to impose a constructive trust upon payments previously received by us to which Rockefeller claims it is owed a portion. We have filed an answer and counterclaims seeking, among other things, a judicial determination that (i) eltrombopag and the backup compound SB-559448 (including the use of such compounds) do not embody any invention(s) described or claimed in certain licensed patent rights under the September 30, 1992 license agreement between us and Rockefeller, (ii) Rockefeller technical information was not essential to the discovery or development of eltrombopag and the backup compound SB-559448, (iii) we are not liable for any additional payments under our September 30, 1992 license agreement with Rockefeller beyond any payments that we have already made, and (iv) the September 30, 1992 license agreement between us and Rockefeller was terminated in November 2007, and that subsequent to the termination of such agreement, we are not liable for future payments under such agreement. Discovery is scheduled to be completed in the second quarter of 2009, but delays are possible and we are unable to guarantee when a final decision will be rendered. Intellectual property license disputes are subject to inherent uncertainties and there can be no assurance this litigation will be resolved favorably to us or that it will not have a material adverse effect on us. Our management is unable to assess the likelihood of an unfavorable outcome and, accordingly, no accrual has been recorded as of June 30, 2008.

In addition, from time to time we are subject to various lawsuits and claims with respect to matters arising out of the normal course of our business. Due to the uncertainty of the ultimate outcome of these matters, the impact on future financial results is not subject to reasonable estimates.

ITEM 1A.

RISK FACTORS

The following is a summary description of some of the many risks we face in our business including any risk factors as to which there may have been a material change from those set forth in our Annual Report on Form 10-K for the year ended December 31, 2007. You should carefully review these risks in evaluating our business, including the businesses of our subsidiaries. You should also consider the other information described in this report.

Risks Related To Us and Our Business.

We rely heavily on collaborative relationships, and any disputes or litigation with our collaborative partners or termination or breach of any of the related agreements could reduce the financial resources available to us, including milestone payments and future royalty revenues.

Our strategy for developing and commercializing many of our potential products, including products aimed at larger markets, includes entering into collaborations with corporate partners and others. These collaborations have provided us with funding and research and development resources for potential products for the treatment of a variety of diseases. These agreements also give our collaborative partners significant discretion when deciding whether or not to pursue any development program. Our existing collaborations may not continue or be successful, and we may be unable to enter into future collaborative arrangements to develop and commercialize our product candidates.

In addition, our collaborators may develop drugs, either alone or with others that compete with the types of drugs they are developing with us. This would result in increased competition for our programs. If products are approved for marketing under our collaborative programs, revenues we receive will depend on the manufacturing, marketing and sales efforts of our collaborative partners, who generally retain commercialization rights under the collaborative agreements. Generally, our current collaborative partners also have the right to terminate their collaborations under specified circumstances. If any of our collaborative partners breach or terminate their agreements with us or otherwise fail to conduct their collaborative activities successfully, our product development under these agreements will be delayed or terminated. Disputes or litigation may also arise with our collaborators, including disputes or litigation over ownership rights to intellectual property, know-how or technologies developed with our collaborators. Such disputes or litigation could adversely affect our rights to one or more of our product candidates, including our LGD-4665 and other small-molecule TPO mimetic compounds. Any such dispute or litigation could delay, interrupt or terminate the collaborative research, development and commercialization of certain potential products, create uncertainty as to ownership rights of intellectual property, or could result in litigation or arbitration. The occurrence of any of these problems could be time-consuming and expensive and could adversely affect our business.

Our product candidates face significant regulatory hurdles prior to marketing which could delay or prevent sales.

Before we obtain the approvals necessary to sell any of our potential products, we must show through preclinical studies and human testing that each product is safe and effective. We and our partners have a number of products moving toward or currently awaiting regulatory action, including eltrombopag, bazedoxifene and lasofoxifene. Failure to show any product’s safety and effectiveness could delay or prevent regulatory approval of a product and could adversely affect our business. The clinical trials process is complex and uncertain. For example, the results of preclinical studies and initial clinical trials may not necessarily predict the results from later large-scale clinical trials. In addition, clinical trials may not demonstrate a product’s safety and effectiveness to the satisfaction of the regulatory authorities. Recently, a number of companies have suffered significant setbacks in advanced clinical trials or in seeking regulatory approvals, despite promising results in earlier trials. The FDA may also require additional clinical trials after regulatory approvals are received. Such additional trials may be expensive and time-consuming, and failure to successfully conduct those trials could jeopardize continued commercialization of a product.

The rate at which we complete our clinical trials depends on many factors, including, but not limited to, our ability to obtain adequate supplies of the products to be tested and patient enrollment. Patient enrollment is a function of many factors, including the size of the patient population, the proximity of patients to clinical sites and the eligibility criteria for the trial. Delays in patient enrollment for our trials may result in increased costs and longer development times. In addition, our collaborative partners have rights to control product development and clinical programs for products developed under the collaborations. As a result, these collaborative partners may conduct these programs more slowly or in a different manner than expected. Moreover, even if clinical trials are completed, we or our collaborative partners still may not apply for FDA approval in a timely manner or the FDA still may not grant approval.

Third party intellectual property may prevent us or our partners from developing our potential products and we may owe a portion of any payments we receive from our collaborative partners to one or more third parties.

Our success will depend on our ability and the ability of our collaborative partners to avoid infringing the proprietary rights of others, both in the United States and in foreign countries. In addition, disputes with licensors under our license agreements may arise which could result in additional financial liability or loss of important technology and potential products and related revenue, if any. Further, the manufacture, use or sale of our potential products or our collaborative partners’ products or potential products may infringe the patent rights of others. This could impact AVINZA, eltrombopag, bazedoxifene, lasofoxifene, LGD-4665 and any other products or potential products.

Several drug companies and research and academic institutions have developed technologies, filed patent applications or received patents for technologies that may be related to our business. Others have filed patent applications and received patents that conflict with patents or patent applications we have licensed for our use, either by claiming the same methods or compounds or by claiming methods or compounds that could dominate those licensed to us. In addition, we may not be aware of all patents or patent applications that may impact our ability to make, use or sell any of our potential products. For example, US patent applications may be kept confidential while pending in the United States Patent and Trademark Office and patent applications filed in foreign countries are often first published six months or more after filing.

Further, these and other possible disagreements or litigation with our collaborative partners could delay our ability and the ability of our collaborative partners to achieve milestones or our receipt of other payments. In addition, these and any other possible disagreements or litigation could delay, interrupt or terminate the research, development and commercialization of certain potential products being developed by either our collaborative partners or by us. Moreover, if we are unable to resolve the current dispute with Rockefeller or any other possible disagreements with licensors or collaborative partners, protracted litigation or arbitration could result. The occurrence of any of the foregoing problems could be time-consuming and expensive and could adversely affect our business.

As noted above, Salk has brought a claim against us in arbitration and Rockefeller has filed a lawsuit against us claiming, among other things, that it is owed and will be owed certain payments under our agreement with them. Other third parties have not directly threatened an action or claim against us, although we do periodically receive other communications or have other conversations with the owners of other patents or other intellectual property. If others obtain patents with conflicting claims, we may be required to obtain licenses to those patents or to develop or obtain alternative technology. We may not be able to obtain any such licenses on acceptable terms, or at all. Any failure to obtain such licenses could delay or prevent us from pursuing the development or commercialization of our potential products.

We are substantially dependent on AVINZA royalties for our revenues.

King is obligated to pay us royalties in the future based on sales of AVINZA by King. Specifically, King is required to pay us a 15% royalty on AVINZA net sales during the first 20 months after the closing of the sale of the AVINZA product line in February 2007. Beginning in October 2008, royalty payments will be based upon calendar year net sales of AVINZA. If calendar year net sales are less than $200.0 million, the royalty payment will be 5% of all net sales. If calendar year net sales are greater than $200.0 million, the royalty payment will be 10% of all net sales less than $250.0 million, plus 15% of net sales greater than $250.0 million. In addition, beginning in 2009, we will no longer be entitled to receive royalties on a quarterly basis, but will collect royalties on an annual basis, which may adversely impact our cash flows. These royalties represent and will for some time represent substantially all of our ongoing revenue. Although we may also receive royalties and milestones from our partners in various past and future collaborations, the amount of revenue from these royalties and milestones is unknown and highly uncertain.

As a result, any setback that may occur with respect to AVINZA could significantly impair our operating results and/or reduce the market price for our stock. Setbacks could include problems with shipping, distribution, manufacturing, product safety, marketing, government licenses and approvals, intellectual property rights, competition with existing or new products and physician or patient acceptance of the products, as well as higher than expected total rebates, returns or discounts.

On September 10, 2007, King reported that Actavis, a manufacturer of generic pharmaceutical products headquartered in Iceland, had filed with the FDA an Abbreviated New Drug Application, or ANDA, with a Paragraph IV Certification pertaining to AVINZA, the rights to which were acquired by King from us in February 2007. According to the report, Actavis’s Paragraph IV Certification sets forth allegations that U.S. Patent No. 6,066,339, or the 339 patent, which pertains to AVINZA, and which is listed in the FDA’s Approved Drug Products With Therapeutic Equivalence Evaluations, will not be infringed by Actavis’s manufacture, use, or sale of the product for which the ANDA was submitted. The expiration date for this patent is November 2017. King, King Pharmaceuticals Research and Development, Inc., Elan Corporation, plc and Elan Pharma International Ltd. jointly filed suit in federal district court in New Jersey on October 18, 2007 against Actavis, Inc. and Actavis Elizabeth LLC for patent infringement under the 339 patent. The lawsuit seeks a judgment that would, among other things, prevent Actavis from commercializing its proposed morphine product until after expiration of the 339 patent.

AVINZA was licensed from Elan Corporation which is its sole manufacturer. Any problems with Elan’s manufacturing operations or capacity could reduce sales of AVINZA, as could any licensing or other contract disputes with Elan, raw materials suppliers, or others. Similarly, King’s AVINZA sales efforts could be affected by a number of factors and decisions regarding its organization, operations, and activities as well as events both related and unrelated to AVINZA, including sales force reorganizations and lower than expected sales call and prescription volumes. AVINZA could also face stiffer competition from existing or future pain products. The negative impact on the AVINZA’s sales growth in turn may negatively affect our royalties, revenues and earnings.

AVINZA sales may also be negatively impacted by higher than expected discounts (especially PBM/GPO rebates and Medicaid rebates, which can be substantial), returns and chargebacks and/or slower than expected market penetration. Other setbacks that AVINZA could face in the sustained-release opioid market include product safety and abuse issues, regulatory action, and the inability to obtain sufficient quotas of morphine from the Drug Enforcement Agency to support production requirements.

With respect to regulatory action and product safety issues, the FDA previously requested expanded warnings on the AVINZA label to alert doctors and patients to the dangers of using AVINZA with alcohol. Changes were made to the label. The FDA also requested clinical studies to investigate the risks associated with taking AVINZA with alcohol. Any additional warnings, studies and any further regulatory action could have significant adverse effects on AVINZA sales.

We may not be able to hire and/or retain key employees.

If we are unable to hire and/or retain key employees, we may not have sufficient resources to successfully manage our assets or our business, and we may not be able to perform our obligations under various contracts and commitments. Either of these could have substantial negative impacts on our business and our stock price.

Our stock price has been volatile and could experience a sudden decline in value.

Our common stock has experienced significant price and volume fluctuations and may continue to experience volatility in the future. As a result, you may not be able to sell your shares quickly or at the latest market price if trading in our stock is not active or the volume is low. Many factors may have a significant impact on the market price of our common stock, including, but not limited to, the following factors: results of or delays in our preclinical studies and clinical trials; the success of our collaboration agreements; publicity regarding actual or potential medical results relating to products under development by us or others; announcements of technological innovations or new commercial products by us or others; developments in patent or other proprietary rights by us or others; comments or opinions by securities analysts or major stockholders; future sales of our common stock by existing stockholders; regulatory developments or changes in regulatory guidance; litigation or threats of litigation; economic and other external factors or other disaster or crises; the departure of any of our officers, directors or key employees; period-to-period fluctuations in financial results; and limited daily trading volume.

The Financial Industry Regulatory Authority, or FINRA, (formerly the National Association of Securities Dealers, Inc.) and the Securities and Exchange Commission, or SEC, have adopted certain new rules. If we were unable to continue to comply with the new rules, we could be delisted from trading on the NASDAQ Global Market, or Nasdaq, and thereafter trading in our common stock, if any, would be conducted through the over-the-counter market or on the Electronic Bulletin Board of FINRA. As a consequence of such delisting, an investor would likely find it more difficult to dispose of, or to obtain quotations as to the price of, our common stock. Delisting of our common stock could also result in lower prices per share of our common stock than would otherwise prevail.

Our product development involves a number of uncertainties, and we may never generate sufficient collaborative payments and royalties from the development of products to become profitable.

We were founded in 1987. We have incurred significant losses since our inception. As of June 30, 2008, our accumulated deficit was $591.9 million.

Most of our products in development will require extensive additional development, including preclinical testing and human studies, as well as regulatory approvals, before they can be marketed. We cannot predict if or when any of the products we are developing or those being developed with our partners will be approved for marketing. There are many reasons why we or our collaborative partners may fail in our efforts to develop our potential products, including the possibility that: preclinical testing or human studies may show that our potential products are ineffective or cause harmful side effects; the products may fail to receive necessary regulatory approvals from the FDA or foreign authorities in a timely manner, or at all; the products, if approved, may not be produced in commercial quantities or at reasonable costs; the products, if approved, may not achieve commercial acceptance; regulatory or governmental authorities may apply restrictions to our products, which could adversely affect their commercial success; or the proprietary rights of other parties may prevent us or our partners from marketing the products.

Any product development failures for these or other reasons, whether with our products or our partners’ products, may reduce our expected revenues, profits, and stock price.

The past restatement of our consolidated financial statements increased the possibility of legal or administrative proceedings. Any future material weaknesses or deficiencies in our internal control over financial reporting could harm stockholder and business confidence on our financial reporting, our ability to obtain financing and other aspects of our business.

We determined that our consolidated financial statements for the years ended December 31, 2002 and 2003, and for the first three quarters of 2004, as described in more detail in our 2004 Annual Report on Form 10-K, should be restated. As a result of these events, we have become subject to a number of additional risks and uncertainties. We expect to continue to incur unanticipated

accounting and legal costs as noted below. In addition, the SEC has instituted a formal investigation into our restated consolidated financial statements identified above. This investigation will likely continue to divert more of our management’s time and attention and cause us to continue to incur substantial costs. Such investigations can also lead to fines or injunctions or orders with respect to future activities, as well as further substantial costs and diversion of management time and attention.

While no material weaknesses were identified as of December 31, 2007, we cannot assure you that material weaknesses will not be identified in future periods. The existence of one or more material weakness or significant deficiency could result in errors in our consolidated financial statements. Substantial costs and resources may be required to rectify any internal control deficiencies. If we fail to achieve and maintain the adequacy of our internal controls in accordance with applicable standards, we may be unable to conclude on an ongoing basis that we have effective internal controls over financial reporting. If we cannot produce reliable financial reports, our business and financial condition could be harmed, investors could lose confidence in our reported financial information, or the market price of our stock could decline significantly. In addition, our ability to obtain additional financing to operate and expand our business, or obtain additional financing on favorable terms, could be materially and adversely affected, which, in turn, could materially and adversely affect our business, our financial condition and the market value of our securities. Moreover, our reputation with customers, lenders, investors, securities analysts and others may be adversely affected.

Challenges to or failure to secure patents and other proprietary rights may significantly hurt our business.

Our success will depend on our ability and the ability of our licensors to obtain and maintain patents and proprietary rights for our potential products both in the United States and in foreign countries. Patents may not be issued from any of these applications currently on file, or, if issued, may not provide sufficient protection. Our patent position, like that of many biotechnology and pharmaceutical companies, is uncertain and involves complex legal and technical questions for which important legal principles are unresolved. We may not develop or obtain rights to products or processes that are patentable. Even if we do obtain patents, such patents may not adequately protect the technology we own or have licensed. In addition, others may challenge, seek to invalidate, infringe or circumvent any patents we own or license and rights we receive under those patents may not provide competitive advantages to us.

Any conflicts resulting from the patent rights of others could significantly reduce the coverage of our patents and limit our ability to obtain meaningful patent protection. We have had and will continue to have discussions with our current and potential collaborative partners regarding the scope and validity of our patents and other proprietary rights. If a collaborative partner or other party successfully establishes that our patent rights are invalid, we may not be able to continue our existing collaborations beyond their expiration. Any determination that our patent rights are invalid also could encourage our collaborative partners to seek early termination of our agreements. Such invalidation could adversely affect our ability to enter into new collaborations.

We may also need to initiate litigation, which could be time-consuming and expensive, to enforce our proprietary rights or to determine the scope and validity of others’ rights. If litigation occurs, a court may find our patents or those of our licensors invalid or may find that we have infringed on a competitor’s rights. In addition, if any of our competitors have filed patent applications in the United States which claim technology we also have invented, the United States Patent and Trademark Office may require us to participate in expensive interference proceedings to determine who has the right to a patent for the technology.

We also rely on unpatented trade secrets and know-how to protect and maintain our competitive position. We require our employees, consultants, collaborative partners and others to sign confidentiality agreements when they begin their relationship with us. These agreements may be breached, and we may not have adequate remedies for any breach. In addition, our competitors may independently discover our trade secrets.

Our legacy commercial product lines expose us to product liability risks and we may not have sufficient insurance to cover any claims.

We completed the sale of our commercial product lines in February 2007. Nevertheless, products we sold prior to divesting these product lines expose us to potential product liability risks. For example, such products may need to be recalled to address regulatory issues. A successful product liability claim or series of claims brought against us could result in payment of significant amounts of money and divert management’s attention from running our business.

In addition, some of the compounds we are investigating may be harmful to humans. We believe that we carry reasonably adequate insurance for product liability claims. However, we may not be able to maintain our insurance on commercially reasonable terms, or our insurance may not provide adequate protection in the case of a product liability claim. To the extent that product liability insurance, if available, does not cover potential claims, we will be required to self-insure the risks associated with such claims.

We will have continuing obligations to indemnify the buyers of our commercial product lines, and may be subject to other liabilities related to the sale of our commercial product lines.

In connection with the sale of our AVINZA product line, we have agreed to indemnify King in certain cases for a period of 30 months after the closing of the sale of the AVINZA product line in February 2007, including any breach of certain representations, warranties or covenants contained in the asset purchase agreement. In addition, we have agreed to indemnify Eisai, the purchaser of our Oncology product line, for damages suffered by Eisai arising from any breach of our representations, warranties, covenants or obligations in the asset purchase agreement. Our obligation to indemnify Eisai extends beyond the closing of the sale of our Oncology product line in October 2006 up to, in some cases, 36 months and, in other cases, until the expiration of the applicable statute of limitations. In a few instances, our obligation to indemnify Eisai survives in perpetuity. Under our agreement with King, $15.0 million of the total upfront cash payment was deposited into an escrow account to secure our indemnification obligations to King. As of March 31, 2008, all amounts in the King escrow account had been released to us. Similarly, our agreement with Eisai required that $20.0 million of the total upfront cash payment be deposited into an escrow account to secure our indemnification obligations to Eisai. As of June 30, 2008, all amounts in the Eisai escrow account had been released to us.

Under certain circumstances, the asset purchase agreement for the AVINZA product line also allows King to set off indemnification claims against the royalty payments payable to us, including AVINZA royalty payments. Under the asset purchase agreements, our exposure for any indemnification claim brought by King or Eisai is limited to $40.0 million and $30.0 million, respectively. However, in certain matters, our indemnification obligation is not subject to the foregoing limits on liability. For example, we are obligated to indemnify King, without limitation, for all liabilities arising under certain agreements with Catalent Pharma Solutions related to the manufacture of AVINZA. Similarly, we are obligated to indemnify Eisai, without limitation, for all liabilities related to certain claims regarding promotional materials for the ONTAK and Targretin drug products. We cannot predict the liabilities that may arise as a result of these matters. Any claims related to our indemnification obligations to King or Eisai could materially and adversely affect our financial condition.

We may also be subject to liability for products we recently sold. For example, Salk filed a demand for arbitration in July 2007 with the American Arbitration Association, seeking damages for alleged breach of contract based on Salk’s theory that it is entitled to a portion of the money paid by Eisai to us for Targretin related assets. Salk currently alleges damages to be $25.4 million, plus interest, if payment is made after October 13, 2008. We have raised a counterclaim in the arbitration with Salk seeking either a refund of $2.9 million of lasofoxifene related payments, plus interest, or an offset against any award that may be granted to Salk. The arbitration with Salk is ongoing. A hearing on the matter is scheduled for the second half of 2008, but delays are possible and we are unable to guarantee when a final decision will be rendered. Intellectual property license disputes are subject to inherent uncertainties and there can be no assurance this arbitration will be resolved favorably to us or that it will not have a material adverse effect on us. Our management is unable to assess the likelihood of an unfavorable outcome and, accordingly, no accrual has been recorded as of June 30, 2008.

As previously disclosed, in connection with the AVINZA sale transaction, King assumed our obligation to make payments to Organon based on net sales of AVINZA (the fair value of which was $59.0 million as of June 30, 2008). As Organon did not consent to the legal assignment of the co-promote termination obligation from us to King, we remain liable to Organon in the event King defaults on this obligation. Any successful claim brought against us by Salk or others, or any requirement to pay a material amount to Organon, could adversely affect our business and the price of our securities.

If we do not reach the market with our products before our competitors offer products for the same or similar uses, or if we are not effective in marketing our products, our revenues from product sales, if any, will be reduced.

We face intense competition in our development activities. Many of our competitors are fully integrated pharmaceutical companies and more established biotechnology companies, which have substantially greater financial, technical, sales and marketing and human resources than we do. These companies might succeed in obtaining regulatory approval for competitive products more rapidly than we can for our products. In addition, competitors might develop technologies and products that are less expensive and perceived to be safer or more effective than those being developed by us, which could impair our product development and render our technology obsolete.

We use hazardous materials, which requires us to incur substantial costs to comply with environmental regulations.

In connection with our research and development activities, we handle hazardous materials, chemicals and various radioactive compounds. To properly dispose of these hazardous materials in compliance with environmental regulations, we are required to contract with third parties at a substantial cost. Our annual cost of compliance with these regulations is approximately $0.7 million. In addition, we believe that we carry reasonably adequate insurance for toxic tort claims. However, we cannot eliminate the risk or predict the exposure of accidental contamination or injury from the handling and disposing of hazardous materials, whether by us or our third-party contractors. Any accident in the handling and disposing of hazardous materials may expose us to significant liability.

Our shareholder rights plan and charter documents may hinder or prevent change of control transactions.

Our shareholder rights plan and provisions contained in our certificate of incorporation and bylaws may discourage transactions involving an actual or potential change in our ownership. In addition, our Board of Directors may issue shares of preferred stock without any further action by the stockholders. Such restrictions and issuances may have the effect of delaying or preventing a change in our ownership. If changes in our ownership are discouraged, delayed or prevented, it would be more difficult for our current Board of Directors to be removed and replaced, even if you or our other stockholders believe that such actions are in the best interests of us and our stockholders.

Return from any dividend is speculative; you may not receive a return on your securities.

In general, we intend to retain any earnings to support the expansion of our business. We have previously paid a special dividend of a substantial portion of the net proceeds from our product line asset sales. However, other than this special dividend, we do not anticipate paying cash dividends on any of our securities in the foreseeable future. Any returns you receive from our stock will be highly dependent on increases in the market price for our securities, if any. The price for our common stock has been highly volatile and may decrease.

We may lose some or all of the value of some of our short term investments.

We engage one or more third parties to manage some of our cash consistent with an investment policy that allows a range of investments and maturities. The investments are intended to maintain safety of principal while providing liquidity adequate to meet projected cash requirements. Risks of principal loss are to be minimized through diversified short and medium term investments of high quality, but the investments are not in every case guaranteed or fully insured. In light of the recent changes in the credit market, one of our short term investments in commercial paper is now in default. We intend to pursue collection efforts, but we might not recoup some or all of our investment in the commercial paper. In addition, from time to time we may suffer other losses on our short term investment portfolio.

We may require additional money to run our business and may be required to raise this money on terms which are not favorable to us or which reduce our stock price.

We may need to complete additional equity or debt financings to fund our operations. Our inability to obtain additional financing could adversely affect our business. Financings may not be available at all or on terms favorable to us. In addition, these financings, if completed, may not meet our capital needs and could result in substantial dilution to our stockholders.

If adequate funds are not available, we may be required to delay, reduce the scope of or eliminate one or more of our research or drug development programs. We may also be required to liquidate our business or file for bankruptcy protection. Alternatively, we may be forced to attempt to continue development by entering into arrangements with collaborative partners or others that require us to relinquish some or all of our rights to technologies or drug candidates that we would not otherwise relinquish.

Our drug development programs will require substantial additional future funding which could hurt our operational and financial condition.

Our drug development programs require substantial additional capital to successfully complete them, arising from costs to: conduct research, preclinical testing and human studies; establish pilot scale and commercial scale manufacturing processes and facilities; and establish and develop quality control, regulatory, marketing, sales and administrative capabilities to support these programs.

Our future operating and capital needs will depend on many factors, including: the pace of scientific progress in our research and development programs and the magnitude of these programs; the scope and results of preclinical testing and human studies; the time and costs involved in obtaining regulatory approvals; the time and costs involved in preparing, filing, prosecuting, maintaining and enforcing patent claims; competing technological and market developments; our ability to establish additional collaborations; changes in our existing collaborations; the cost of manufacturing scale-up; and the effectiveness of our commercialization activities.

We expect our research and development expenditures over the next three years to continue to be significant. However, we base our outlook regarding the need for funds on many uncertain variables. Such uncertainties include regulatory approvals, the timing of events outside our direct control such as product launches by partners and the success of such product launches, negotiations with potential strategic partners, possible sale of assets or other transactions and other factors. Any of these uncertain events can significantly change our cash requirements.

While we expect to fund our research and development activities primarily from cash generated from AVINZA royalties to the extent possible, if we are unable to do so, we may need to complete additional equity or debt financings or seek other external means of financing. These financings could depress our stock price. If additional funds are required to support our operations and we are unable to obtain them on terms favorable to us, we may be required to cease or reduce further development or commercialization of our products, to sell some or all of our technology or assets or to merge with another entity.

Significant returns of products we sold prior to selling our commercial businesses could harm our operating results.

Under our agreements to sell our commercial businesses, we remain financially responsible for returns of our products sold before those businesses were transferred to their respective buyers. Consequently, if returns of those products are higher than expected, we could incur substantial expenses for processing and issuing refunds for those returns which, in turn, could negatively impact our financial results. The amount of returns could be affected by a number of factors including, but not limited to, ongoing product demand, product rotation at distributors and wholesalers, and product stability issues.

ITEM 4.

SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

We held an Annual Meeting of Stockholders on May 29, 2008. The following elections and proposals were approved at the Annual Meeting:


	Votes For	Votes Against	Votes Withheld	Votes Abstaining	Broker Non Votes
1. Election of a Board of Directors. The total number of votes cast for, or withheld for each nominee was as follows:

Jason M. Aryeh	60,268,855	—	14,405,455	—	—
Todd C. Davis	74,003,294	—	671,016	—	—
Elizabeth M. Greetham	73,988,405	—	685,905	—	—
John L. Higgins	73,962,759	—	711,551	—	—
David M. Knott	73,960,770	—	713,540	—	—
John W. Kozarich	60,267,885	—	14,406,425	—	—
Jeffrey R. Perry	60,179,276	—	14,495,034	—	—

2. Ratification of the appointment of Grant Thornton, LLP as the independent auditors for the fiscal year ending December 31, 2008.	74,229,652	320,639	—	124,021	—

ITEM 6.

EXHIBITS


Exhibit Number		Description

3.1(1)		Amended and Restated Certificate of Incorporation of the Company (Filed as Exhibit 3.1).

3.2(1)		Bylaws of the Company, as amended (Filed as Exhibit 3.3).

3.3(2)		Amended Certificate of Designation of Rights, Preferences and Privileges of Series A Participating Preferred Stock of the Company.

3.4(3)		Certificate of Amendment of the Amended and Restated Certificate of Incorporation of the Company dated June 14, 2000 (Filed as Exhibit 3.5).

3.5(4)		Certificate of Amendment of the Amended and Restated Certificate of Incorporation of the Company dated June 30, 2004 (Filed as Exhibit 3.6).

3.6(5)		Amendment of the Bylaws of the Company dated November 8, 2005 (Filed as Exhibit 3.1).

3.7(6)		Amendment of Bylaws of the Company dated December 4, 2007 (Filed as Exhibit 3.1).

4.1(7)		Specimen stock certificate for shares of Common Stock of the Company.

4.2(8)		Indenture dated November 26, 2002, between the Company and J.P. Morgan Trust Company, National Association, as trustee, with respect to the 6% convertible subordinated notes due 2007 (Filed as Exhibit 4.3).

4.3(8)		Form of 6% Convertible Subordinated Note due 2007 (Filed as Exhibit 4.4).

4.4(8)		Pledge Agreement dated November 26, 2002, between the Company and J.P. Morgan Trust Company, National Association (Filed as Exhibit 4.5).

4.5(8)		Control Agreement dated November 26, 2002, among the Company, J.P. Morgan Trust Company, National Association and JP Morgan Chase Bank (Filed as Exhibit 4.6).

4.6(9)		2006 Preferred Shares Rights Agreement, by and between the Company and Mellon Investor Services LLC, dated as of October 13, 2006 (Filed as Exhibit 4.1).

31.1		Certification by Principal Executive Officer, Pursuant to Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

31.2		Certification by Principal Financial Officer, Pursuant to Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

32.1		Certification by Principal Executive Officer, Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

32.2		Certification by Principal Financial Officer, Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

(1)	This exhibit was previously filed as part of, and is hereby incorporated by reference to the numbered exhibit filed with the Company’s Registration Statement on Form S-4 (No. 333-58823) filed on July 9, 1998.

(2)	This exhibit was previously filed as part of and is hereby incorporated by reference to same numbered exhibit filed with the Company’s Quarterly Report on Form 10-Q for the period ended March 31, 1999.

(3)	This exhibit was previously filed as part of, and are hereby incorporated by reference to the numbered exhibit filed with the Company’s Annual Report on Form 10-K for the year ended December 31, 2000.

(4)	This exhibit was previously filed as part of, and is hereby incorporated by reference to the numbered exhibit filed with the Company’s Quarterly Report on Form 10-Q for the period ended June 30, 2004.

(5)	This exhibit was previously filed as part of, and is being incorporated by reference to the numbered exhibit filed with the Company’s Current Report on Form 8-K filed on November 14, 2005.

(6)	This exhibit was previously filed as part of, and is hereby incorporated by reference to the numbered exhibit filed with the Company’s Current Report on Form 8-K filed on December 6, 2007.

(7)	This exhibit was previously filed as part of, and is hereby incorporated by reference to the same numbered exhibit filed with the Company’s Registration Statement on Form S-1 (No. 33-47257) filed on April 16, 1992 as amended.

(8)	This exhibit was previously filed as part of, and is hereby incorporated by reference to the numbered exhibit filed with the Company’s Registration Statement on Form S-3 (No. 333-102483) filed on January 13, 2003, as amended.

(9)	This exhibit was previously filed as part of, and is being incorporated by reference to the numbered exhibit filed with the Company’s Current Report on Form 8-K filed on October 17, 2006.

LIGAND PHARMACEUTICALS INCORPORATED

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.


Date: August 4, 2008	By:	/s/ John P. Sharp
		John P. Sharp
		Vice President, Finance and Chief Financial Officer

INDEX TO EXHIBITS


Exhibit Number		Description

3.1(1)		Amended and Restated Certificate of Incorporation of the Company (Filed as Exhibit 3.1).

3.2(1)		Bylaws of the Company, as amended (Filed as Exhibit 3.3).

3.3(2)		Amended Certificate of Designation of Rights, Preferences and Privileges of Series A Participating Preferred Stock of the Company.

3.4(3)		Certificate of Amendment of the Amended and Restated Certificate of Incorporation of the Company dated June 14, 2000 (Filed as Exhibit 3.5).

3.5(4)		Certificate of Amendment of the Amended and Restated Certificate of Incorporation of the Company dated September 30, 2004 (Filed as Exhibit 3.6).

3.6(5)		Amendment of the Bylaws of the Company dated November 8, 2005 (Filed as Exhibit 3.1).

3.7(6)		Amendment of Bylaws of the Company dated December 4, 2007 (Filed as Exhibit 3.1).

4.1(7)		Specimen stock certificate for shares of Common Stock of the Company.

4.2(8)		Indenture dated November 26, 2002, between the Company and J.P. Morgan Trust Company, National Association, as trustee, with respect to the 6% convertible subordinated notes due 2007 (Filed as Exhibit 4.3).

4.3(8)		Form of 6% Convertible Subordinated Note due 2007 (Filed as Exhibit 4.4).

4.4(8)		Pledge Agreement dated November 26, 2002, between the Company and J.P. Morgan Trust Company, National Association (Filed as Exhibit 4.5).

4.5(8)		Control Agreement dated November 26, 2002, among the Company, J.P. Morgan Trust Company, National Association and JP Morgan Chase Bank (Filed as Exhibit 4.6).

4.6(9)		2006 Preferred Shares Rights Agreement, by and between the Company and Mellon Investor Services LLC, dated as of October 13, 2006 (Filed as Exhibit 4.1).

31.1		Certification by Principal Executive Officer, Pursuant to Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

31.2		Certification by Principal Financial Officer, Pursuant to Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

32.1		Certification by Principal Executive Officer, Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

32.2		Certification by Principal Financial Officer, Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

(1)	This exhibit was previously filed as part of, and is hereby incorporated by reference to the numbered exhibit filed with the Company’s Registration Statement on Form S-4 (No. 333-58823) filed on July 9, 1998.

(2)	This exhibit was previously filed as part of and is hereby incorporated by reference to same numbered exhibit filed with the Company’s Quarterly Report on Form 10-Q for the period ended March 31, 1999.

(3)	This exhibit was previously filed as part of, and are hereby incorporated by reference to the numbered exhibit filed with the Company’s Annual Report on Form 10-K for the year ended December 31, 2000.

(4)	This exhibit was previously filed as part of, and is hereby incorporated by reference to the numbered exhibit filed with the Company’s Quarterly Report on Form 10-Q for the period ended June 30, 2004.

(5)	This exhibit was previously filed as part of, and is being incorporated by reference to the numbered exhibit filed with the Company’s Current Report on Form 8-K filed on November 14, 2005.

(6)	This exhibit was previously filed as part of, and is hereby incorporated by reference to the numbered exhibit filed with the Company’s Current Report on Form 8-K filed on December 6, 2007.

(7)	This exhibit was previously filed as part of, and is hereby incorporated by reference to the same numbered exhibit filed with the Company’s Registration Statement on Form S-1 (No. 33-47257) filed on April 16, 1992 as amended.

(8)	This exhibit was previously filed as part of, and is hereby incorporated by reference to the numbered exhibit filed with the Company’s Registration Statement on Form S-3 (No. 333-102483) filed on January 13, 2003, as amended.

(9)	This exhibit was previously filed as part of, and is being incorporated by reference to the numbered exhibit filed with the Company’s Current Report on Form 8-K filed on October 17, 2006.