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 23, 2013

MannKind Corporation

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (661) 775-5300

N/A

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

Check the appropriate box below if the Form 8-K is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

(e)

Adoption of 2013 Equity Incentive plan

At our 2013 Annual Meeting of Stockholders held on May 23, 2013 (the “Annual Meeting”), our stockholders approved our 2013 Equity Incentive Plan (the “Plan”), which had been previously approved by our Board of Directors subject to stockholder approval.

A detailed summary of the material features of the Plan is set forth under the caption “Proposal 2” in our definitive proxy statement for the Annual Meeting, filed with the Securities and Exchange Commission (the “SEC”) on April 12, 2013 (the “Proxy Statement”). The foregoing description of the Plan does not purport to be complete and is qualified in its entirety by reference to the description of the Plan set forth in the Proxy Statement and the full text of the Plan, which is attached as Exhibit 99.1 to our Registration Statement on Form S-8 (No. 333-188790) (the “Form S-8”) filed with the SEC on May 23, 2013.

Equity Awards to Named Executive Officers

On May 23, 2013 following the approval of the Plan by our stockholders at the Annual Meeting, the Compensation Committee of our Board of Directors granted restricted stock units (“RSUs”) and stock options to our named executive officers under the Plan, which are subject to vesting as described below. The RSUs are evidenced by a form of Restricted Stock Unit Grant Notice and Restricted Stock Unit Award Agreement (“RSU Grant Documents”), and the stock options are evidenced by a form of Stock Option Grant Notice and Stock Option Agreement (“Stock Option Grant Documents”), which, together with the Plan, set forth the terms and conditions of the equity awards.

The following table sets forth the RSUs and stock options granted to the named executive officers listed below:

The foregoing is only a brief description of the material terms of the RSUs and stock options granted to our named executive officers on May 23, 2013, does not purport to be complete and is qualified in its entirety by reference to the Plan and the RSU Grant Documents and Stock Option Grant Documents, the forms of which are attached as Exhibits 99.2 and 99.3 to the Form S-8.

The following is a brief description of each matter voted upon at the Annual Meeting, as well as the number of votes with respect to each matter.

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.

MANNKIND CORPORATION