[Form 4] FISERV INC Insider Trading Activity

Rhea-AI Filing Summary

Director Henrique De Castro had 253 deferred compensation notional units credited on 09/30/2025 under the Fiserv, Inc. Non-Employee Director Deferred Compensation Plan in respect of $32,500 of deferred fees. The number of units was calculated by dividing the deferred cash amount by Fiserv's closing common stock price on the deferral date, which was $128.93 per share. Each notional unit will be settled on a one-for-one basis in shares of Fiserv common stock after the reporting person's service ends. The Form 4 is filed by a single reporting person and was signed by an attorney-in-fact on 10/02/2025.

Positive

• 253 notional units were credited, reflecting deferred compensation of $32,500
• Notional units will be settled one-for-one into Fiserv common stock after service ends
• Transaction follows the company’s Non-Employee Director Deferred Compensation Plan formula using the closing price

Negative

• None.

Insights

Corporate Governance Analyst

Director deferred fees converted to 253 notional units at $128.93 per share.

The filing documents the crediting of 253 notional units under the company's Non-Employee Director Deferred Compensation Plan for $32,500 of deferred director fees on 09/30/2025. This reflects the routine use of equity-indexed deferrals to align director compensation with shareholder outcomes.

The units convert one-for-one into common shares after the director leaves service, meaning the eventual share issuance is tied to tenure rather than an immediate open-market transaction. There are no sales or derivative exercises reported in this Form 4.

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

1. Name and Address of Reporting Person^*

DE CASTRO HENRIQUE

(Last) (First) (Middle)

600 N. VEL R. PHILLIPS AVENUE

(Street)

MILWAUKEE WI 53203

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
FISERV INC [ FI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2025

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

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
Deferred Compensation Notional Units	(1)	09/30/2025		A		253		(1)	(1)	Common Stock	253	$128.93(1)	5,110	D

Explanation of Responses:

1. These deferred compensation notional units were allocated under the Fiserv, Inc. Non-Employee Director Deferred Compensation Plan (the "Plan"), under which director fees otherwise payable in cash may be deferred in exchange for the allocation of notional units under the Plan. This Form 4 reports the crediting of units under the Plan on September 30, 2025, in respect of $32,500 of deferred compensation. The number of notional units credited is calculated by dividing the amount of compensation that is deferred by the closing price of the company's common stock on the date of deferral, or last business day prior. On September 30, 2025, the closing price of Fiserv's common stock was $128.93 per share. Following cessation of the reporting person's service to the company, each notional unit will be settled in shares of Fiserv common stock on a one-for-one basis.

Remarks:

	/s/ Eric C. Nelson (attorney-in-fact)	10/02/2025
	** 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 Henrique De Castro report on the Form 4 for Fiserv (FI)?

The Form 4 reports the crediting of 253 deferred compensation notional units on 09/30/2025 under the Non-Employee Director Deferred Compensation Plan for $32,500 of deferred fees.

How was the number of notional units calculated?

The number of units was calculated by dividing the deferred cash amount ($32,500) by the closing price of Fiserv common stock on the deferral date ($128.93 per share).

When will the notional units be settled into shares?

Each notional unit will be settled in shares of Fiserv common stock on a one-for-one basis following cessation of the reporting person's service to the company.

Did the Form 4 report any sales or option exercises?

No. The Form 4 reports an allocation of deferred compensation notional units (Acquisition) and does not show any sales or derivative exercises.

Who signed the Form 4 and when was it filed?

The Form 4 was signed by Eric C. Nelson as attorney-in-fact and dated 10/02/2025.