Fiserv director Wafaa Mamilli defers $38.8K in pay

The credited units are scheduled to settle one-for-one in Fiserv common shares after Mamilli’s service to the company ends.

Rhea-AI Filing Summary

Fiserv director Wafaa Mamilli acquired 858 deferred compensation notional units on September 30, 2026, in respect of $38,750 of deferred compensation. The units were calculated using Fiserv common stock’s $45.18 closing price that day. Her reported balance after the credit was 3,498 units. Following the end of her service to Fiserv, each unit will be settled in one share of common stock.

Insider Trade Summary

Grant/Award: 858 shares

Grant/Award 1 txn

Insider Mamilli Wafaa

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Deferred Compensation Notional Units F1	858	$45.18	$39K

Holdings After Transaction: Deferred Compensation Notional Units — 3,498 contracts (Direct)

Footnotes (1)

1. F1. 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, 2026, in respect of $38,750 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, 2026, the closing price of Fiserv's common stock was $45.18 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.

Key Figures

Deferred compensation notional units credited: 858 units Deferred compensation: $38,750 Closing stock price: $45.18 per share +2 more

5 metrics

Deferred compensation notional units credited 858 units September 30, 2026

Deferred compensation $38,750 Amount deferred in exchange for the credited units

Closing stock price $45.18 per share Fiserv common stock on September 30, 2026; used to calculate the credited units

Notional units following transaction 3,498 units Reported balance after the September 30, 2026 credit

Settlement 1 share per notional unit Following cessation of the reporting person’s service to Fiserv

Key Terms

Deferred Compensation Notional Units, Non-Employee Director Deferred Compensation Plan, one-for-one basis

3 terms

Deferred Compensation Notional Units financial

"crediting of units under the Plan in respect of $38,750 of deferred compensation"

Non-Employee Director Deferred Compensation Plan financial

"Fiserv, Inc. Non-Employee Director Deferred Compensation Plan"

one-for-one basis financial

"settled in shares of Fiserv common stock on a one-for-one basis"

FAQ

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How many deferred compensation units did FISV director Wafaa Mamilli receive?

Wafaa Mamilli, a Fiserv director, was credited with 858 deferred compensation notional units on September 30, 2026, in respect of $38,750 of deferred compensation. The units were calculated using Fiserv common stock’s $45.18 closing price that day.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/01/2026 - 06:36 PM Accepted by SEC EDGAR 10/01/2026 - 06:35 PM Learn about SEC filing dates

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).

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^*

Mamilli Wafaa

(Last) (First) (Middle)

600 N. VEL R. PHILLIPS AVENUE

(Street)

MILWAUKEE WISCONSIN 53203

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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)	09/30/2026		A		858		(1)	(1)	Common Stock	858	$45.18(1)	3,498	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, 2026, in respect of $38,750 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, 2026, the closing price of Fiserv's common stock was $45.18 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)	10/01/2026
	** 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.
* Form 4: SEC 1474 (03-26)