1 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 1, 2000 S1 CORPORATION --------------- (Exact name of registrant as specified in its charter) DELAWARE 000-24931 58-2395199 - -------------------------------------------- ----------------------------- --------------------------- (State or other jurisdiction (Commission (IRS Employer of incorporation) File Number) Identification No.) 3390 PEACHTREE ROAD, NE, SUITE 1700, ATLANTA, GEORGIA 30326 ----------------------------------------------------------- (Address of principal executive offices) Registrant's telephone number, including area code: (404) 812-6200 -------------- NOT APPLICABLE ---------------------------------------------------------------------- (Former name or former address, if changed since last report) 2 ITEM 5. OTHER EVENTS. On December 1, 2000, S1 Corporation issued a press release announcing that it had reached an agreement to merge its wholly owned subsidiary, VerticalOne Corporation, with a subsidiary of Yodlee, Inc. in a stock-for-stock exchange. The transaction is subject to any required regulatory filings and notices, as well as customary closing conditions. A copy of the press release is attached as Exhibit 99.1. 3 ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS. (a) Not applicable. (b) Not applicable. (c) Exhibits. Exhibit No. Description --- ----------- 99.1 Press Release dated December 1, 2000. 4 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. S1 CORPORATION -------------- (Registrant) /s/ Robert F. Stockwell -------------------------------- Robert F. Stockwell Chief Financial Officer Date: December 1, 2000 5 EXHIBIT INDEX Exhibit No. Description -- ----------- 99.1 Press Release dated December 1, 2000.