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):

May 31, 2012

HEARTWARE INTERNATIONAL, INC.

(Exact name of registrant as specified in its charter)

205 Newbury Street, Suite 101

Framingham, MA 01701

(Address of principal executive offices)

Registrant’s telephone number, including area code:

508.739.0950

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):

Item 5.07 Submission of Matters to a Vote of Security Holders

On Thursday, May 31, 2012 HeartWare International, Inc. held its Annual Meeting of Stockholders in Marina del Rey, California. Each of the proposals put to vote of stockholders, and as previously announced in the Notice of Meeting contained in the company’s Definitive Proxy Statement filed with the Securities and Exchange Commission on April 27, 2012, was approved as recommended by the Board.

The proposals voted upon by stockholders of the company were as follows:

To elect Cynthia Feldmann and Denis Wade as Class I Directors to hold office until our Annual Meeting of Stockholders to be held in 2015 and until his or her successor is duly elected and qualified;

2. To ratify the appointment of Grant Thornton LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2012;

3. To consider and act on an advisory vote to approve the compensation paid to certain executive officers;

4. For the purposes of Australian Securities Exchange (“ASX”) Listing Rule 7.2 (Exception 9) and for all other purposes, to approve the HeartWare International, Inc. 2012 Incentive Award Plan and the issue and transfer of securities thereunder;

5. For the purposes of ASX Listing Rule 10.14 and for all other purposes, to approve the grant of 36,000 restricted stock units to Douglas Godshall on the terms set out in the proxy statement;

6. For the purposes of ASX Listing Rule 10.14 and for all other purposes, to approve the grant of up to 1,000 restricted stock units and 1,000 stock options to Robert Thomas on the terms set out in the proxy statement;

7. For the purposes of ASX Listing Rule 10.14 and for all other purposes, to approve the grant of up to 1,000 restricted stock units and 1,000 stock options to Seth Harrison on the terms set out in the proxy statement;

8. For the purposes of ASX Listing Rule 10.14 and for all other purposes, to approve the grant of up to 1,000 restricted stock units and 1,000 stock options to Timothy Barberich on the terms set out in the proxy statement;

9. For the purposes of ASX Listing Rule 10.14 and for all other purposes, to approve the grant of up to 1,000 restricted stock units and 1,000 stock options to Charles Raymond Larkin, Jr. on the terms set out in the proxy statement;

10. For the purposes of ASX Listing Rule 10.14 and for all other purposes, to approve the grant of up to 1,000 restricted stock units and 1,000 stock options to Robert Stockman on the terms set out in the proxy statement;

11. For the purposes of ASX Listing Rule 10.14 and for all other purposes, to approve the grant of up to 1,000 restricted stock units and 1,000 stock options to Denis Wade on the terms set out in the proxy statement;

12. For the purposes of ASX Listing Rule 10.14 and for all other purposes, to approve the grant of up to 2,000 restricted stock units and 1,000 stock options to Cynthia Feldmann on the terms set out in the proxy statement.

A tabular summary of voting results is attached as an exhibit hereto and incorporated herein.

Item 9.01 Financial Statements and 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.