1 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): September 5, 2006 ----------------- SI FINANCIAL GROUP, INC. ------------------------ (Exact name of registrant as specified in its charter) United States 0-50801 84-1655232 ------------- ------- ---------- (State or other jurisdiction of (Commission (IRS Employer incorporation or organization) File Number) Identification No.) 803 Main Street, Willimantic, Connecticut 06226 ----------------------------------------- ----- (Address of principal executive offices) (Zip Code) (860) 423-4581 -------------- (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)) 2 ITEM 8.01 OTHER EVENTS ------------ On September 5, 2006, SI Financial Group, Inc. (the "Company"), the holding company for Savings Institute Bank and Trust Company (the "Bank"), announced that the Bank has signed a definitive agreement to acquire Fairfield Financial Mortgage Group, Inc. of Danbury, Connecticut. The press release announcing the transaction is included as Exhibit 99.1 and is incorporated herein by reference. ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS. --------------------------------- (a) Financial Statements of Businesses Acquired: Not applicable (b) Pro Forma Financial Information: Not applicable (c) Shell Company Transactions: Not applicable (d) Exhibits Number Description ------ ----------- 99.1 Press Release Dated September 5, 2006 3 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. SI FINANCIAL GROUP, INC. Date: September 6, 2006 By: /s/ Rheo A. Brouillard -------------------------------------------- Rheo A. Brouillard President and Chief Executive Officer