SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 --------------- FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 3, 2005 LIGAND PHARMACEUTICALS INCORPORATED (Exact name of registrant as specified in its charter) DELAWARE (State or other jurisdiction of incorporation) 000-20720 (Commission File Number) 10275 SCIENCE CENTER DRIVE SAN DIEGO, CALIFORNIA (Address of principal executive offices) (858) 550-7500 Registrant's telephone number, including area code) 77-0160744 (I.R.S. Employer Identification No.) 92121-1117 (Zip Code) ITEM 8.01 OTHER EVENTS On October 3, 2005, the company sent a letter to Third Point LLC. The text of the letter is furnished as Exhibit 99.1 hereto. ITEM 9.01 EXHIBITS EXHIBIT NUMBER DESCRIPTION -------------- ----------- 99.1 Letter from the company to Third Point LLC, dated October 3, 2005. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has caused this report to be signed on its behalf by the undersigned. LIGAND PHARMACEUTICALS INCORPORATED Date: October 3, 2005 By: /s/ Warner R. Broaddus Name: Warner R. Broaddus Title: Vice President, General Counsel & Secretary