UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the Securities

Exchange Act of 1934 (Amendment No. _____)

Filed by the Registrant x

Filed by a Party other than the Registrant ¨

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¨ Preliminary Proxy Statement

¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

¨ Definitive Proxy Statement

x Definitive Additional Materials

¨ Soliciting Material Under Rule 14a-12

Alliance Bancorp, Inc. of Pennsylvania

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than Registrant)

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x No fee required.

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(3) Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):  

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¨ Fee paid previously with preliminary materials.

¨ Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously.  Identify the previous filing by registration statement number, or the form or schedule and the date of its filing.

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June 14, 2011

ERRATA SHEET TO PROXY STATEMENT

This errata sheet to our proxy statement, dated June 13, 2011, for the special meeting of shareholders of Alliance Bancorp, Inc. of Pennsylvania to be held on July 20, 2011 (the “Proxy Statement”) is being delivered to shareholders of Alliance Bancorp to correct an error in the Proxy Statement.

On Page 3 of the Proxy Statement, in the Proposal to Adopt the 2011 Stock Option Plan, under the heading “Description of the Stock Option Plan – Number of Shares Covered by the Stock Option Plan,” we indicate that a total of 325,842 shares of our common stock have been reserved for future issuance pursuant to the Stock Option Plan. The number of shares reserved for the Stock Option Plan is equal to 10.0% of the shares sold in our recent “second-step” stock offering, not 4.0% of the shares sold as incorrectly stated on page 3 of the Proxy Statement.  The 325,842 shares reserved under the Stock Option Plan is equal to approximately 6.0% of the currently outstanding shares of our common stock.

We apologize for any inconvenience or confusion caused by this error.