Wafaa Mamilli - 31 Dec 2025 Form 4 Insider Report for FISERV INC (FI)

Reporting relationship: Director
Issuer ticker: FI
Reported as of: 31 Dec 2025
Net transaction value: +$37,548
SEC form: 4
Accepted by SEC: 05 Jan 2026, 18:24:41 UTC
Prior SEC filing: 02 Oct 2025
Next SEC filing: 02 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Eric C. Nelson (attorney-in-fact)

Key filing fact

Wafaa Mamilli filed Form 4 for FISERV INC (FI) on 05 Jan 2026.

Key facts

This page summarizes Wafaa Mamilli's Form 4 filing for FISERV INC (FI).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 05 Jan 2026, 18:24.

Change

Previous filing in this sequence was filed on 02 Oct 2025.
Current net transaction value: +$37,548.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001800960 Primary reporting owner

Mamilli Wafaa

Relationship: Director
Address: 600 N. VEL R. PHILLIPS AVENUE, MILWAUKEE
Signature: /s/ Eric C. Nelson (attorney-in-fact)
Signature date: 05 Jan 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

FISV transaction Derivative

Deferred Compensation Notional Units

Award

Transaction value: $37,548
Shares: +559
Change %: +87%
Price: $67.17
Shares after: 1,202
Date: 31 Dec 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 559
Exercise price
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote 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 December 31, 2025, in respect of $37,500 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 December 31, 2025, the closing price of Fiserv's common stock was $67.17 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.