Ownership Submission
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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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Viens Daniel
2. Date of Event Requiring Statement (Month/Day/Year)
12/01/2018
3. Issuer Name and Ticker or Trading Symbol
FACTSET RESEARCH SYSTEMS INC [FDS]
(Last)
(First)
(Middle)
C/O FACTSET RESEARCH SYSTEMS INC., 601 MERRITT 7
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
SVP, CHRO
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

NORWALK, CT 06851
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 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 1,644
D
 
Common Stock 283 (1)
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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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 of Derivative Security: 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 Option (right to buy)   (2) 11/03/2024 Common Stock 1,009 $ 131.31 D  
Employee Stock Option (right to buy)   (3) 11/02/2025 Common Stock 3,017 $ 175.2 D  
Employee Stock Option (right to buy)   (4) 11/01/2026 Common Stock 2,535 $ 152.28 D  
Employee Stock Option (right to buy)   (5) 11/02/2027 Common Stock 2,072 $ 189.98 D  
Employee Stock Option (right to buy)   (6) 11/01/2028 Common Stock 2,467 $ 221.88 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Viens Daniel
C/O FACTSET RESEARCH SYSTEMS INC.
601 MERRITT 7
NORWALK, CT 06851
      SVP, CHRO  

Signatures

/s/ Daniel Viens 12/06/2018
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Restricted stock units granted on November 1, 2018 vest 20% annually on the anniversary date of the grant and are fully vested after five years.
(2) Options granted on November 3, 2014 vest 60% at three years from the anniversary date of the grant and 40% at five years from the anniversary date of the grant.
(3) Options granted on November 2, 2015 vest 20% annually on the anniversary date of the grant and are fully vested after five years.
(4) Options granted on November 1, 2016 vest 20% annually on the anniversary date of the grant and are fully vested after five years.
(5) Options granted on November 2, 2017 vest 20% annually on the anniversary date of the grant and are fully vested after five years.
(6) Options granted on November 1, 2018 vest 20% annually on the anniversary date of the grant and are fully vested after five years.
 
Remarks:
Effective December 1, 2018, FactSet Research Systems Inc. appointed Daniel Viens as the Chief Human Resources Officer ("CHRO").

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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