[Form 4] FACTSET RESEARCH SYSTEMS INC Insider Trading Activity

Rhea-AI Filing Summary

FactSet Research Systems (FDS)11/01/2025, the officer acquired 367 shares of common stock upon the vesting of previously granted performance share units and had 171 shares withheld to cover taxes at $266.8 per share.

Following these transactions, the reporting person beneficially owns 808.1824 shares directly. The filing lists transaction codes M (PSU vesting) and F (tax withholding).

11/03/2025 - 06:38 PM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Stepp Katherine M

(Last) (First) (Middle)

45 GLOVER AVENUE

(Street)

NORWALK CT 06850

(City) (State) (Zip)

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)
	Chief Technology Officer (CTO)

3. Date of Earliest Transaction (Month/Day/Year)
11/01/2025

4. 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 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
Common Stock	11/01/2025		M		367(1)	A	$0	979.1824	D
Common Stock	11/01/2025		F		171(2)	D	$266.8	808.1824	D

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 Securities Underlying Derivative Security (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: 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
Performance Share Unit	(3)	11/01/2025		M			367	(3)	(3)	Common Stock	367	$0	0	D

Explanation of Responses:

1. Represents common stock received upon the vesting on November 1, 2025 of performance share units ("PSUs") granted on November 1, 2022.

2. Represents the number of shares withheld to cover the cost of taxes upon vesting on November 1, 2025 of PSUs granted on November 1, 2022.

3. Reflects vesting on November 1, 2025 of PSUs granted on November 1, 2022.

Remarks:

	/s/ WINNIFRED LEWIS, Attorney in Fact for Katherine M. Stepp	11/03/2025
	** 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 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.
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.

FAQ

What did FactSet (FDS) disclose in this Form 4?

The CTO reported PSU vesting of 367 shares and tax withholding of 171 shares at $266.8 per share on 11/01/2025.

How many shares did the FDS CTO acquire and why?

The CTO acquired 367 shares upon the vesting of performance share units granted on 11/01/2022.

How many shares were withheld for taxes and at what price?

The filing shows 171 shares were withheld to cover taxes at $266.8 per share.

What is the CTO’s ownership after these transactions for FDS?

Beneficial ownership is listed as 808.1824 shares, held directly.

What transaction codes appear in the filing for FDS?

Codes M (related to PSU vesting) and F (tax withholding) are listed for the transactions on 11/01/2025.

Whose transactions are reported in this FDS Form 4?

The filing is for the company’s Chief Technology Officer; the signature lists attorney-in-fact for Katherine M. Stepp.