UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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): May 15, 2012

ENTROPIC COMMUNICATIONS, INC.

(Exact Name of Registrant as Specified in Its Charter)

6290 Sequence Drive

San Diego, CA 92121

(Address of Principal Executive Offices and Zip Code)

(858) 768-3600

(Registrant’s Telephone Number, Including Area Code)

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):

On May 15, 2012, Entropic Communications, Inc. (the “Company”) held its 2012 Annual Meeting of Stockholders (the “Annual Meeting”). The following proposals were submitted to a vote of the stockholders of the Company at the Annual Meeting and the final results of voting on each proposal are noted below:

Proposal 1: Kenneth Merchant and Umesh Padval, the nominees for Class II Directors, were elected to hold office until the Company’s 2015 Annual Meeting of Stockholders based upon the following votes:

Proposal 2: The proposal to approve, on an advisory basis, the compensation of the Company’s named executive officers, as disclosed in the Company’s proxy statement, was approved based on the following votes:

Proposal 3: The proposal to ratify the selection by the audit committee of the Company’s board of directors of Ernst & Young LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2012 was approved based on the following votes:

There were no broker non-votes for this proposal.

As of the close of business on March 26, 2012, the record date for the Annual Meeting, there were 87,499,725 shares of common stock outstanding and entitled to vote, 73,826,744 shares of which were present in person or represented by proxy at the Annual Meeting for the proposals indicated above.

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 hereto duly authorized.