UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

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FORM 8-K

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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 15, 2009

Enterprise Acquisition Corp.

 (Exact Name of Registrant as Specified in Its Charter)

(561) 988-1700

 (Registrant’s Telephone Number, Including Area Code)

Not applicable

(Former Name of 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 (see General Instruction A.2. below):

[X]

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 (17CFR 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 1.01 – ENTRY INTO MATERIAL DEFINITIVE AGREEMENT

On October 15, 2009, Enterprise Acquisition Corp. (the "Company" or "Enterprise") entered into a Stock Purchase Agreement with Fir Tree SPAC Holdings I, LLC ("Fir Tree"), pursuant to which Fir Tree will sell to Enterprise a total of 1,563,000 shares of the Company’s common stock issued in its initial public offering (“Public Shares”) at a price per share of $9.98, subject to adjustment. The purchases will take place concurrently with or following the closing of the merger with ARMOUR Residential REIT, Inc. ("ARMOUR") and the purchases will be paid for with funds that will be released from the Company’s trust account upon consummation of the merger.

Pursuant to the Stock Purchase Agreement, Fir Tree has agreed to have its Public Shares voted in favor of each of the stockholder proposals set forth in the Company's definitive proxy statement/prospectus, dated October 13, 2009, filed with the Securities and Exchange Commission on October 14, 2009.

Such purchases, if made, would increase the likelihood that holders of a majority of the shares of the Company’s common stock will vote in favor of the merger and that holders of less than 30% of Public Shares (or 50% of the Public Shares, if the proposal to increase the conversion threshold is approved at the special meeting) vote against the merger and seek conversion of their Public Shares into cash in accordance with the Company’s amended and restated certificate of incorporation.

The foregoing description of the Stock Purchase Agreement is qualified in its entirety by the copy of such agreement filed as Exhibit 10.1 to this report, which is incorporated herein by this reference.

Additional Information and Where to Find It

This communication is being made in respect of the proposed business combination involving Enterprise and ARMOUR. In connection with the proposed transaction, ARMOUR filed Amendment No. 4 to the Registration Statement on Form S-4 with the SEC on October 13, 2009, and the definitive Proxy Statement/Prospectus for Enterprise was mailed to stockholders and warrantholders of Enterprise on October 14, 2009. INVESTORS AND SECURITY HOLDERS OF ENTERPRISE ARE URGED TO READ THE DEFINITIVE PROXY STATEMENT/PROSPECTUS AND OTHER DOCUMENTS FILED WITH THE SEC CAREFULLY IN THEIR ENTIRETY BECAUSE THEY CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. Investors and security holders will be able to obtain free copies of the definitive Proxy Statement/Prospectus and other documents filed with the SEC by Enterprise and ARMOUR through the website maintained by the SEC at www.sec.gov. Free copies of the definitive Proxy Statement/Prospectus and other documents filed with the SEC can also be obtained by directing a request to Enterprise Acquisition Corp., 6800 Broken Sound Parkway, Boca Raton, Florida 33487 Attention: Investor Relations.

Participants in Solicitation

Enterprise and ARMOUR and their respective directors and executive officers and other persons may be deemed to be participants in the solicitation of proxies in respect of the proposed transaction. Information regarding Enterprise's directors and executive officers is available in its Annual Report on Form 10-K for the year ended December 31, 2008, which was filed with the SEC on March 16, 2009, and information regarding ARMOUR's directors and executive officers is available in the definitive Proxy Statement/Prospectus filed with the SEC on October 14, 2009 by Enterprise and ARMOUR. Other information regarding the participants in the proxy solicitation and a description of their direct and indirect interests, by security holdings or otherwise, is contained in the definitive Proxy Statement/Prospectus and other relevant materials filed with the SEC.

ITEM 9.01

Financial Statements and Exhibits

(d) Exhibits:

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.

Dated: October 16, 2009

ENTERPRISE ACQUISITION CORP.

/s/ Daniel C. Staton                

Name: Daniel C. Staton

Title:   President and Chief Executive Officer

Exhibit Index