Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN 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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(Print or Type Responses)
1. Name and Address of Reporting Person *
FRANKENFIELD MICHAEL D
  2. Issuer Name and Ticker or Trading Symbol
FACTSET RESEARCH SYSTEMS INC [FDS]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Senior Vice President
(Last)
(First)
(Middle)
601 MERRITT 7
3. Date of Earliest Transaction (Month/Day/Year)
01/07/2008
(Street)

NORWALK, CT 
4. If Amendment, Date 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
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
FactSet Common Stock 01/07/2008   M   7,987 A $ 22.0833 65,582 D  
FactSet Common Stock 01/07/2008   M   5,512 A $ 22.0833 71,094 D  
FactSet Common Stock 01/07/2008   M   27 A $ 22.8333 71,121 D  
FactSet Common Stock 01/07/2008   M   5,717 A $ 22.8333 76,838 D  
FactSet Common Stock 01/07/2008   M   2,007 A $ 17.5667 78,845 D  
FactSet Common Stock 01/07/2008   M   3,750 A $ 14.9667 82,595 D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
FactSet Common Stock $ 22.0833 01/07/2008   M     7,987 03/13/2001 03/13/2010 FactSet Common Stock 7,987 $ 53.37 215,502 D  
FactSet Common Stock $ 22.0833 01/07/2008   M     5,512 03/13/2001 03/13/2010 FactSet Common Stock 5,512 $ 53.37 209,990 D  
FactSet Common Stock $ 22.8333 01/07/2008   M     27 11/13/2001 11/13/2010 FactSet Common Stock 27 $ 53.35 209,963 D  
FactSet Common Stock $ 22.8333 01/07/2008   M     5,717 11/13/2001 11/13/2010 FactSet Common Stock 5,717 $ 53.35 204,246 D  
FactSet Common Stock $ 17.5667 01/07/2008   M     2,007 10/23/2002 10/23/2011 FactSet Common Stock 2,007 $ 53.35 202,239 D  
FactSet Common Stock $ 14.9667 01/07/2008   M     3,750 10/07/2003 10/07/2012 FactSet Common Stock 3,750 $ 53.36 198,489 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
FRANKENFIELD MICHAEL D
601 MERRITT 7
NORWALK, CT 
      Senior Vice President  

Signatures

 Michael D. Frankenfield   01/07/2008
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(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.

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