UNITED STATES
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): March 20, 2008

TierOne Corporation
(Exact name of registrant as specified in its charter)

Wisconsin
000-50015
04-3638672
(State or other (Commission File (IRS Employer
jurisdiction of Number) Identification No.)
incorporation)

1235 “N” Street, Lincoln, Nebraska 68508
(Address of principal executive offices, including zip code)

(402) 475-0521

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report)

_________________

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

[   ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
[   ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
[   ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
[   ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))


Item 1.02. Termination of a Material Definitive Agreement.

        On March 20, 2008, the Board of Directors of TierOne Corporation, a Wisconsin corporation (“TierOne”), terminated that certain Agreement and Plan of Merger, dated May 17, 2007 (the “Merger Agreement”), by and among TierOne, CapitalSource Inc., a Delaware corporation (“CapitalSource”), and CapitalSource TRS Inc., a Delaware corporation and a wholly owned subsidiary of CapitalSource. Pursuant to the terms of the Merger Agreement, either party had the right to terminate the Merger Agreement if the proposed merger was not completed by February 17, 2008. No termination fee is payable by TierOne as a result of its termination of the Merger Agreement.

Item 8.01. Other Events.

        On March 20, 2008, TierOne issued a press release in connection with the termination of the Merger Agreement. A copy of such press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Item 9.01. Financial Statements and Exhibits.

  (a) Financial Statements of Business Acquired.

  Not applicable.

  (b) Pro Forma Financial Information.

  Not applicable.

  (c) Shell Company Transactions.

  Not applicable.

  (d) Exhibits.

  The following exhibit is being furnished herewith:

  99.1 Press Release of TierOne Corporation, dated March 20, 2008.





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SIGNATURES

        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 hereunto duly authorized.

TIERONE CORPORATION


Date:  March 21, 2008
By:  /s/ Gilbert G. Lundstrom
        Gilbert G. Lundstrom
        Chairman of the Board and Chief Executive Officer








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TIERONE CORPORATION

Exhibit Index to Current Report on Form 8-K

Exhibit
Number

99.1 Press Release of TierOne Corporation, dated March 20, 2008.











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