PUBM

Pubmatic, Inc.

A digital advertising technology company, PubMatic builds a cloud platform that automates the buying and selling of online ad space for publishers — websites, apps, and video creators — handling the fast, automated auctions that place ads on pages. Founded in 2006 by brothers Rajeev and Amar Goel with two partners, the company got its name by blending "publisher" and "automatic," and early software was built in Pune, India. Co-founder Amar Goel has said his favorite first-year memory was simply printing out the wireframes for the early product — not yet serving real ads, but finally making the vision tangible.

CUSIP: 74467Q103Communication ServicesUS1 holder

Ownership Activity Financials Filings

Insiders

Ranked by how much each holding moved in the last 5 years

Insider

Nexus India Capital I L P +2 co-filers10% owner · 2 transactions

4.62M-56.5%

as of Nov 2021

Goel Amar K.CHAIRMAN, CHIEF INNOVATION OFF, Director, 10% owner · 391 transactions

4.26M—

Granted 150.7K · Sold 1.03M

Gupta NarendraDirector · 4 transactions

2.69M-53.4%

as of Dec 2021

Helion Venture Partners LLC10% owner · 4 transactions

2.41M-71.7%

as of Nov 2021

Hartenbaum Howard +3 co-filers10% owner · 4 transactions

2.16M-47.4%

as of Nov 2021

Goel Rajeev K.CHIEF EXECUTIVE OFFICER, Director, 10% owner · 210 transactions

2.04M—

Granted 778.7K · Sold 2.35M

Pantelick StevenCHIEF FINANCIAL OFFICER · 105 transactions

568.8K—

Granted 404.2K · Sold 543.5K

Hartenbaum Howard10% owner · 3 transactions

429.2K—

as of Feb 2022

Sold 20.0K

Carlborg W EricDirector · 10 transactions

267.7K+144.2%

as of May 2023

Granted 19.3K

Kumar MukulPRESIDENT, ENGINEERING · 123 transactions

244.5K-23.6%

Granted 167.6K · Sold 304.2K

Woods AndrewGENERAL COUNSEL & SECRETARY · 30 transactions

69.9K—

Granted 121.8K · Sold 56.4K

Klimenko PaulinaCHIEF GROWTH OFFICER · 55 transactions

61.4K—

Granted 219.3K · Sold 244.3K

Glaser ShelaghDirector · 2 transactions

21.5K—

Granted 21.5K

Shulman Yakov (Jacob)Director · 2 transactions

18.0K—

Granted 18.0K

Mehta Nikhil RameshDirector · 1 transaction

18.0K—

as of May 2025

Granted 8.4K

Daimler SusanDirector · 2 transactions

15.8K—

as of Dec 2022

Granted 8.8K · Sold 15.8K

Hirsch Jeffrey K.Former Chief Commercial Off. · 51 transactions

13.8K+19.7%

as of Apr 2023

Granted 29.3K · Sold 108.8K

Gimbel LisaCHIEF ACCOUNTING OFFICER · 37 transactions

13.7K—

Granted 24.9K · Sold 15.7K

Black CathleenDirector · 5 transactions

13.0K—

as of May 2023

Granted 13.0K · Sold 18.8K

Chow Thomas C.General Counsel and Secretary · 29 transactions

4.9K+402%

as of Jul 2022

Granted 18.1K · Sold 101.9K

van der Zweep MichaelController · 33 transactions

1.7K+2358%

as of Jun 2023

Granted 11.4K · Sold 41.9K

Insider	Stake change	Holds now	Granted / vested	Bought	Sold
Nexus India Capital I L P +2 co-filers10% owner · 2 transactions	-56.5%	4.62Mas of Nov 2021	—	—	—
Goel Amar K.CHAIRMAN, CHIEF INNOVATION OFF, Director, 10% owner · 391 transactions	—	4.26M	150.7K	—	1.03M
Gupta NarendraDirector · 4 transactions	-53.4%	2.69Mas of Dec 2021	—	—	—
Helion Venture Partners LLC10% owner · 4 transactions	-71.7%	2.41Mas of Nov 2021	—	—	—
Hartenbaum Howard +3 co-filers10% owner · 4 transactions	-47.4%	2.16Mas of Nov 2021	—	—	—
Goel Rajeev K.CHIEF EXECUTIVE OFFICER, Director, 10% owner · 210 transactions	—	2.04M	778.7K	—	2.35M
Pantelick StevenCHIEF FINANCIAL OFFICER · 105 transactions	—	568.8K	404.2K	—	543.5K
Hartenbaum Howard10% owner · 3 transactions	—	429.2Kas of Feb 2022	—	—	20.0K
Carlborg W EricDirector · 10 transactions	+144.2%	267.7Kas of May 2023	19.3K	—	—
Kumar MukulPRESIDENT, ENGINEERING · 123 transactions	-23.6%	244.5K	167.6K	—	304.2K
Woods AndrewGENERAL COUNSEL & SECRETARY · 30 transactions	—	69.9K	121.8K	—	56.4K
Klimenko PaulinaCHIEF GROWTH OFFICER · 55 transactions	—	61.4K	219.3K	—	244.3K
Glaser ShelaghDirector · 2 transactions	—	21.5K	21.5K	—	—
Shulman Yakov (Jacob)Director · 2 transactions	—	18.0K	18.0K	—	—
Mehta Nikhil RameshDirector · 1 transaction	—	18.0Kas of May 2025	8.4K	—	—
Daimler SusanDirector · 2 transactions	—	15.8Kas of Dec 2022	8.8K	—	15.8K
Hirsch Jeffrey K.Former Chief Commercial Off. · 51 transactions	+19.7%	13.8Kas of Apr 2023	29.3K	—	108.8K
Gimbel LisaCHIEF ACCOUNTING OFFICER · 37 transactions	—	13.7K	24.9K	—	15.7K
Black CathleenDirector · 5 transactions	—	13.0Kas of May 2023	13.0K	—	18.8K
Chow Thomas C.General Counsel and Secretary · 29 transactions	+402%	4.9Kas of Jul 2022	18.1K	—	101.9K
van der Zweep MichaelController · 33 transactions	+2358%	1.7Kas of Jun 2023	11.4K	—	41.9K

Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.