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): January 30, 2012

MICROSTRATEGY INCORPORATED

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (703) 848-8600

(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 (see General Instruction A.2. below):

Fourth Quarter Financial Results

On January 30, 2012, MicroStrategy Incorporated (the “Company”) issued a press release announcing the Company’s financial results for the quarter ended December 31, 2011. A copy of this press release is attached as Exhibit 99.1 to this Current Report on Form 8-K.

In this Form 8-K, the Company is updating the January 30, 2012 press release to: (i) adjust the amount of excess tax benefits from share-based compensation arrangements in the Consolidated Statement of Cash Flows for the Twelve Months Ended December 31, 2011, as shown in the table below (in thousands), and (ii) revise the list of new customers and new deals with existing customers in Q4 2011.

The information in the January 30, 2012 press release, as updated for the matters described above, is referred to in this Form 8-K as the “Updated Release”, dated February 1, 2012. Other than as described above, the Updated Release, including the net increase in cash and cash equivalents and other financial statement line items contained therein, is the same as the January 30, 2012 press release.

The Updated Release is attached as Exhibit 99.2 to this Form 8-K.

The information in this Form 8-K (including Exhibits 99.1 and 99.2) shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act except as expressly set forth by specific reference in such a filing.

(d) Exhibits

SIGNATURE

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.

EXHIBIT INDEX