================================================================================ SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 CITIGROUP INC. CITIGROUP FUNDING INC. SAFETY FIRST TRUST SERIES 2006-1 (EXACT NAME OF REGISTRANT AS (EXACT NAME OF REGISTRANT AS (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) SPECIFIED IN ITS CHARTER) SPECIFIED IN ITS CHARTER) DELAWARE DELAWARE DELAWARE (STATE OF INCORPORATION (STATE OF INCORPORATION (STATE OF INCORPORATION OR ORGANIZATION) OR ORGANIZATION) OR ORGANIZATION) 52-1568099 42-1658283 42-6664144 (I.R.S. EMPLOYER IDENTIFICATION NO.) (I.R.S. EMPLOYER IDENTIFICATION NO.) (I.R.S. EMPLOYER IDENTIFICATION NO.) 399 PARK AVENUE NEW YORK, NEW YORK 10043 (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES) (ZIP CODE) If this Form relates to the registration of If this Form relates to the registration of a class of securities pursuant to Section 12(b) a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant of the Exchange Act and is effective pursuant to General to General Instruction A.(c), please check the Instruction A.(d), please check the following box. [ ] following box. [X] Securities Act registration statement file number to 333-135867, 333-135867-10 and 333-135867-11 (If applicable) which this form relates: Securities to be registered pursuant to Section 12(b) of the Act: TITLE OF EACH CLASS NAME OF EACH EXCHANGE ON WHICH TO BE SO REGISTERED EACH CLASS IS TO BE REGISTERED ------------------- ------------------------------ Principal-Protected Trust Certificates Linked to the Dow American Stock Exchange Jones Industrial Average(SM) and the Nikkei 225 Stock Average(SM) Due 2010. Securities to be registered pursuant to Section 12(g) of the Act: None (TITLE OF CLASS) ================================================================================ ITEM 1. DESCRIPTION OF REGISTRANTS' SECURITIES TO BE REGISTERED. For a description of the securities to be registered hereunder, reference is made to the information under the headings "Summary Information -- Q&A," "Risk Factors" and "Description of the Certificates" on pages 2 through 10, 11 through 18 and 25 through 39, respectively, of the Registrants' Prospectus and Pricing Supplement, Subject to Completion, dated October 25, 2006 (Registration Nos. 333-135867, 333-135867-10 and 333-135867-11), which information is hereby incorporated herein by reference and made part of this registration statement in its entirety. The description of the Principal-Protected Trust Certificates Linked to the Dow Jones Industrial Average(SM) and the Nikkei 225 Stock Average(SM) Due 2010 (the "Certificates") contained in the final Prospectus and Pricing Supplement to be filed pursuant to Rule 424(b), which will contain the final terms of the Certificates, is deemed to be incorporated herein by reference and made part of this registration statement in its entirety. ITEM 2. EXHIBITS. 99 (A). Prospectus and Pricing Supplement describing the Certificates, Subject to Completion, dated October 25, 2006, incorporated by reference to the Registrants' filing under Rule 424(b)(2) dated October 26, 2006. 99 (B). Certificate of Trust of Safety First Trust Series 2006-1, incorporated by reference to Exhibit 3(j) to the Registrants' automatic shelf registration statement on Form S-3 filed on July 19, 2006 (Registration Nos. 333-135867, 333-135867-10 and 333-135867-11) (the "Registration Statement"). 99 (C). Form of Amended and Restated Declaration of Trust, incorporated by reference to Exhibit 4(a) to the Registration Statement. 99 (D). Form of the Trust Certificates Guarantee Agreement, incorporated by reference to Exhibit 4(b) to the Registration Statement. 99 (E). Form of Certificate Representing the Certificates (included in Exhibit 99(C)). 2 SIGNATURE Pursuant to the requirements of Section 12 of the Securities Exchange Act of 1934, each registrant has duly caused this registration statement or amendment thereto to be signed on its behalf by the undersigned, thereunto duly authorized. Citigroup Inc. (Registrant) By: /s/ Charles E. Wainhouse ------------------------------ Name: Charles E. Wainhouse Title: Assistant Treasurer Citigroup Funding Inc. (Registrant) By: /s/ Geoffrey S. Richards ------------------------------ Name: Geoffrey S. Richards Title: Vice President and Assistant Treasurer Safety First Trust Series 2006-1 (Registrant) Date: November 22, 2006 By: /s/ Geoffrey S. Richards ------------------------------ Name: Geoffrey S. Richards Title: Regular Trustee 3 INDEX TO EXHIBITS EXHIBIT NO. EXHIBIT ----------- ------- 99(A). Prospectus and Pricing Supplement describing the Certificates, Subject to Completion, dated October 25, 2006, incorporated by reference to the Registrants' filing under Rule 424(b)(2) dated October 26, 2006. 99(B). Certificate of Trust of Safety First Trust Series 2006-1, incorporated by reference to Exhibit 3(j) to the Registration Statement. 99(C). Form of Amended and Restated Declaration of Trust, incorporated by reference to Exhibit 4(a) to the Registration Statement. 99(D). Form of the Trust Certificates Guarantee Agreement, incorporated by reference to Exhibit 4(b) to the Registration Statement. 99(E). Form of Certificate Representing the Certificates (included in Exhibit 99(C)). 4