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 24, 2014

POLONIA BANCORP, INC.

(Exact name of registrant as specified in its charter)

(215) 938-8800

(Registrant’s telephone number, including area code)

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:

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01    Other Events

On January 24, 2014, Polonia Bancorp, Inc. (the “Company”) announced that its Board of Directors had approved the repurchase of up to 175,563 shares of the Company’s outstanding common stock. These repurchases will be conducted through a Rule 10b5-1 repurchase plan with Sandler O’Neill & Partners, L.P., which plan will become effective following release of the Company’s earnings for the quarter and year ended December 31, 2013.

The press release announcing the approval of the stock repurchase plan is attached to this Report as Exhibit 99.1 and is incorporated herein by reference.

Item 9.01    Financial Statements and Exhibits

(d)  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 thereunto duly authorized.