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): September 21, 1998 S & T Bancorp, Inc. (Exact name of registrant as specified in its charter) Pennsylvania 0-12508 25-1434426 (State or other jurisdiction (Commission File Number) (IRS Employer of incorporation) Identification No.) 43 South Ninth Street, Indiana, PA 15701 (Address of principal executive offices) Zip Code Registrant's telephone number, including area code (724) 465-1466 Item 5 - Other Events On September 21, 1998, the Board of Directors of S & T Bancorp, Inc. (S&T) approved a two-for-one stock split which will be effected in the form of a 100 percent stock dividend. The new shares will be distributed on October 30, 1998 to shareholders of record on October 15, 1998. The split will increase the number of shares outstanding to approximately 27,500,000. (c) Exhibit (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. S & T Bancorp, Inc. September 23, 1998 By: /s/ Robert E. Rout Robert E. Rout Senior Vice President and Chief Financial Officer