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 5, 2015

KEARNY FINANCIAL CORP.

(Exact Name of Registrant as Specified in its Charter)

Registrant’s telephone number, including area code: (973) 244-4500

Not Applicable

(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):

On May 6, 2015, Kearny Financial Corp., a federal corporation (the “Company”), announced that the members of Kearny MHC and the Company’s stockholders each approved the Plan of Conversion and Reorganization pursuant to which Kearny MHC will convert to the stock holding company form of organization and Kearny Financial Corp., a Maryland corporation (“New Kearny”), the proposed stock holding company for Kearny Bank, will sell shares of its common stock. The Company also announced that the Company’s stockholders and Kearny MHC’s members each approved the establishment and funding of the KearnyBank Foundation with a contribution of 500,000 shares of New Kearny common stock and $5.0 million in cash.

A copy of the press release is included as exhibit 99.1 to this report and is incorporated herein by reference.

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.