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) December 19, 2005

(Exact Name of Registrant as Specified in its Charter)

Pennsylvania
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(State or Other Jurisdiction of Incorporation)

0-12508
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(Commission File Number)

25-1434426
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(IRS Employer Identification No.)

43 South Ninth Street, Indiana, PA
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(Address of Principal Executive Offices)

15701
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Zip Code

Registrant's telephone number, including area code

(800) 325-2265
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Item 8.01 - Other Events

The Board of Directors of S&T Bancorp, Inc. declared a $0.29 per share cash dividend at its regular meeting held December 19, 2005. The dividend is payable on January 25, 2006 to shareholders of record on December 30, 2005. This dividend represents a 7.0 percent increase over the same period last year and a 3.0 percent annualized yield utilizing the December 19, 2005 closing stock price of $37.63.

Item 9.01 - Financial Statements and Exhibits

(c) Exhibits

(99) Press Release

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed by the undersigned thereunto duly authorized.

December 19, 2005

Robert E. Rout
Senior Executive Vice President,
Chief Financial Officer and Secretary