SEC Form 3
FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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1. Name and Address of Reporting Person*
Mills William

(Last) (First) (Middle)
C/O CITIGROUP INC. CORPORATE LAW DEPT.
425 PARK AVENUE 2ND FLOOR

(Street)
NEW YORK NY 10022

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
04/22/2008
3. Issuer Name and Ticker or Trading Symbol
CITIGROUP INC [ C ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
CEO, Europe, Mid East, Africa
5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock 1,464,774.4 D
Common Stock 4,100 I By Spouse
Common Stock 1,442.7 I By 401(k) Plan
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Options (Right to Buy) 01/20/2006 01/20/2010 Common Stock 25,000 49.5 D
Employee Stock Options (Right to Buy) 02/12/2005 02/12/2009 Common Stock 42,500 32.05 D
Employee Stock Options (Right to Buy) 01/16/2003 01/16/2011 Common Stock 53,609.95 49.5477 D
Employee Stock Options (Right to Buy) 10/01/2004 02/13/2012 Common Stock 9,259 51.7 D
Employee Stock Options (Right to Buy) 10/01/2004 04/18/2010 Common Stock 36,631 51.7 D
Employee Stock Options (Right to Buy) 08/10/2004 01/19/2009 Common Stock 5,007 49.15 D
Employee Stock Options (Right to Buy) 05/04/2004 11/02/2008 Common Stock 20,885 48.04 D
Employee Stock Options (Right to Buy) 01/17/2008 02/13/2012 Common Stock 9,356 52.46 D
Employee Stock Options (Right to Buy) 06/28/2007 01/19/2009 Common Stock 4,919 56.41 D
Employee Stock Options (Right to Buy) 06/28/2007 11/02/2008 Common Stock 18,397 56.41 D
Employee Stock Options (Right to Buy) 06/19/2007 11/02/2008 Common Stock 18,443 55.44 D
Employee Stock Options (Right to Buy) 06/19/2007 01/19/2009 Common Stock 4,920 55.44 D
Employee Stock Options (Right to Buy) 06/15/2007 11/02/2008 Common Stock 19,411 53.11 D
Employee Stock Options (Right to Buy) 04/05/2007 02/13/2012 Common Stock 29,007 51.03 D
Employee Stock Options (Right to Buy) 04/05/2007 04/18/2010 Common Stock 25,574 51.03 D
Employee Stock Options (Right to Buy) 07/31/2001 01/19/2009 Common Stock 5,249.49 52.4156 D
Employee Stock Options (Right to Buy) 05/09/2001 11/02/2008 Common Stock 20,840.33 49.4894 D
Employee Stock Options (Right to Buy) 02/03/2001 01/19/2009 Common Stock 5,222.33 49.6206 D
Employee Stock Options (Right to Buy) 06/30/2003 06/30/2008 Common Stock 139.3803 28.6513 D
Employee Stock Options (Right to Buy) 06/30/2004 06/30/2009 Common Stock 124.3701 32.2219 D
Explanation of Responses:
William J. Mills by Glenn S. Gray, Attorney-in-Fact 05/02/2008
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.