Steven Pantelick - 01 Jul 2026 Form 4 Insider Report for PubMatic, Inc. (PUBM)

Reporting relationship: CHIEF FINANCIAL OFFICER
Issuer ticker: PUBM
Reported as of: 01 Jul 2026
Net transaction value: -$489,731
SEC form: 4
Accepted by SEC: 06 Jul 2026, 18:24:58 UTC
Prior SEC filing: 08 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Andrew Woods, Attorney-in-Fact

Key filing fact

Steven Pantelick filed Form 4 for PubMatic, Inc. (PUBM) on 06 Jul 2026.

Key facts

This page summarizes Steven Pantelick's Form 4 filing for PubMatic, Inc. (PUBM).
7 reported transactions and 4 derivative rows are listed below.
Accepted by SEC: 06 Jul 2026, 18:24.

Change

Previous filing in this sequence was filed on 08 Apr 2026.
Current net transaction value: -$489,731.

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 0001833465 Primary reporting owner

Pantelick Steven

Relationship: CHIEF FINANCIAL OFFICER
Address: C/O PUBMATIC, INC., 601 MARSHALL STREET, REDWOOD CITY
Signature: /s/ Andrew Woods, Attorney-in-Fact
Signature date: 06 Jul 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: +45,665
Change %: +107%
Price: $0.000000^*
Shares after: 88,368
Date: 01 Jul 2026
Ownership: Direct
Footnotes: F1

PUBM transaction

Class A Common Stock

Sale

Transaction value: $321,395
Shares: -23,548
Change %: -27%
Price: $13.65
Shares after: 64,820
Date: 02 Jul 2026
Ownership: Direct
Footnotes: F2, F3

PUBM transaction

Class A Common Stock

Sale

Transaction value: $168,336
Shares: -12,548
Change %: -19%
Price: $13.42
Shares after: 52,272
Date: 06 Jul 2026
Ownership: Direct
Footnotes: F4, F5

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: -9,547
Change %: -33%
Price: $0.000000^*
Shares after: 19,092
Date: 01 Jul 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 9,547
Exercise price: $0.000000
Footnotes: F6, F7, F8

PUBM transaction Derivative

Restricted Stock Unit

Options Exercise

Transaction value
Shares: -8,955
Change %: -14%
Price: $0.000000^*
Shares after: 53,730
Date: 01 Jul 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 8,955
Exercise price: $0.000000
Footnotes: F6, F8, F9

PUBM transaction Derivative

Restricted Stock Unit

Options Exercise

Transaction value
Shares: -7,407
Change %: -9.1%
Price: $0.000000^*
Shares after: 74,069
Date: 01 Jul 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 7,407
Exercise price: $0.000000
Footnotes: F6, F8, F10

PUBM transaction Derivative

Restricted Stock Unit

Options Exercise

Transaction value
Shares: -19,756
Change %: -6.7%
Price: $0.000000^*
Shares after: 276,585
Date: 01 Jul 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 19,756
Exercise price: $0.000000
Footnotes: F6, F8, F11

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

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 11 footnotes

Footnote F1

Includes 1,384 shares of Class A Common Stock acquired by the Reporting Person on May 29, 2026 pursuant to the Issuer's employee stock purchase plan.

Footnote F2

The sales reported in this line item 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 F3

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 $13.50 to $13.89, 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 F4

The sales reported in this line item were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 28, 2025.

Footnote F5

The price reported in this line item is a weighted average price. These shares were sold at prices ranging from $13.30 to $13.53, 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.

Footnote F6

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 F7

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 F8

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

Footnote F9

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 F10

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 F11

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.