Paulina Klimenko - 01 Apr 2026 Form 4 Insider Report for PubMatic, Inc. (PUBM)

Reporting relationship: CHIEF GROWTH OFFICER
Issuer ticker: PUBM
Reported as of: 01 Apr 2026
Net transaction value: -$98,823
SEC form: 4
Accepted by SEC: 03 Apr 2026, 17:19:49 UTC
Prior SEC filing: 19 Feb 2026
Next SEC filing: 08 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Andrew Woods, Attorney-in-Fact

Key filing fact

Paulina Klimenko filed Form 4 for PubMatic, Inc. (PUBM) on 03 Apr 2026.

Key facts

This page summarizes Paulina Klimenko's Form 4 filing for PubMatic, Inc. (PUBM).
6 reported transactions and 4 derivative rows are listed below.
Accepted by SEC: 03 Apr 2026, 17:19.

Change

Previous filing in this sequence was filed on 19 Feb 2026.
Current net transaction value: -$98,823.

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 0001974892 Primary reporting owner

Klimenko Paulina

Relationship: CHIEF GROWTH OFFICER
Address: C/O PUBMATIC, INC., 601 MARSHALL STREET, REDWOOD CITY
Signature: /s/ Andrew Woods, Attorney-in-Fact
Signature date: 03 Apr 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

PUBM transaction

Class A Common Stock

Options Exercise

Transaction value
Shares: +33,531
Change %: +65%
Price: $0.000000^*
Shares after: 85,311
Date: 01 Apr 2026
Ownership: Direct

PUBM transaction

Class A Common Stock

Sale

Transaction value: $98,823
Shares: -12,091
Change %: -14%
Price: $8.17
Shares after: 73,220
Date: 02 Apr 2026
Ownership: Direct
Footnotes: F1, F2

Reported derivative securities

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

PUBM transaction Derivative

Restricted Stock Unit

Options Exercise

Transaction value
Shares: -6,583
Change %: -25%
Price: $0.000000^*
Shares after: 19,751
Date: 01 Apr 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 6,583
Exercise price: $0.000000
Footnotes: F3, F4, F5

PUBM transaction Derivative

Restricted Stock Unit

Options Exercise

Transaction value
Shares: -6,484
Change %: -12%
Price: $0.000000^*
Shares after: 45,393
Date: 01 Apr 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 6,484
Exercise price: $0.000000
Footnotes: F3, F5, F6

PUBM transaction Derivative

Restricted Stock Unit

Options Exercise

Transaction value
Shares: -5,364
Change %: -8.3%
Price: $0.000000^*
Shares after: 58,999
Date: 01 Apr 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 5,364
Exercise price: $0.000000
Footnotes: F3, F5, F7

PUBM transaction Derivative

Restricted Stock Unit

Options Exercise

Transaction value
Shares: -15,100
Change %: -6.3%
Price: $0.000000^*
Shares after: 226,495
Date: 01 Apr 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 15,100
Exercise price: $0.000000
Footnotes: F3, F5, F8

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 8 footnotes

Footnote F1

The sales reported on this Form 4 represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units ("RSUs"). The sales were to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

Footnote F2

The price reported in this line item is a weighted average price. These shares were sold as part of block trades for multiple security holders of the Issuer at prices ranging from $7.98 to $8.27, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein with regard to the block trades.

Footnote F3

Each RSU represents a right to receive one share of the Issuer's Class A Common Stock at the time of settlement for no consideration.

Footnote F4

The RSUs vested as to 1/16th of the total award on April 1, 2023, and 1/16th of the total award will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

Footnote F5

RSUs do not expire; they either vest or are canceled prior to the vesting date.

Footnote F6

The RSUs vested as to 1/16th of the total award on April 1, 2024, and 1/16th of the total award will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

Footnote F7

The RSUs vested as to 1/16th of the total award on April 1, 2025, and 1/16th of the total award will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

Footnote F8

The RSUs vested as to 1/16th of the total award on April 1, 2026, and 1/16th of the total award will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.