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Changes in Beneficial Ownership · 4

PubMatic, Inc.

PUBMNASDAQEQUITYCurrent

Changes in Beneficial Ownership

Filed Sep 18, 2026Accepted Sep 18, 2026, 4:09 PM EDTFiling CIK 1422930Accession 0001833462-26-000016
Share

Structured filing — 4

form4-09182026_080950.xml

Open full document ↗

Filing details

Report period
2026-09-16
Issuer
PubMatic, Inc.
Issuer CIK
0001422930
Trading symbol
PUBM
Rule 10b5-1 indication
Checked

Reporting owner 1

Name
Kumar Mukul
Reporting owner CIK
0001833462
Relationship
Officer
Officer title
PRESIDENT, ENGINEERING
Address
C/O PUBMATIC, INC., 601 MARSHALL STREET, REDWOOD CITY, CA, 94063

Non-derivative transactions

Non-derivative transactions · 2 reported rows
SecurityTransaction dateCodeAmountA / DPrice (USD)Owned afterOwnership
Class A Common Stock2026-09-16C · Form 48,000A0120,945D
Class A Common Stock2026-09-16S · Form 4[F1]8,000D16.7785[F2]112,945D
Table key
C · Form 4
Derivative conversion
A
Acquired
D
Direct
S · Form 4
Sale on the market or privately

Derivative transactions

Derivative transactions · 3 reported rows
SecurityConversion / exercise price (USD)Transaction dateCodeAmountA / DPrice (USD)ExercisableExpiresUnderlying securityUnderlying sharesOwned afterOwnership
Stock Option (Right to buy Class B Common Stock)2.152026-09-16M · Form 48,000D0[F3]2027-05-01Class B Common Stock8,00015,000D
Class B Common Stock[F4]2026-09-16M · Form 48,000A2.15[F4][F4]Class A Common Stock8,000143,600D
Class B Common Stock[F4]2026-09-16C · Form 48,000D0[F4][F4]Class A Common Stock8,000135,600D
Table key
M · Form 4
Exempt derivative exercise or conversion under Rule 16b-3
D
Direct
A
Acquired
C · Form 4
Derivative conversion

Footnotes

F1
The sales reported in this line item were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 3, 2026.↩ 1
F2
Represents the weighted average sale price. The lowest price at which shares were sold was $16.68 and the highest price at which shares were sold was $16.88. The Reporting Person undertakes to provide upon request to the staff of the Securities and Exchange Commission, the Issuer or its stockholders, full information regarding the total number of shares sold at each separate price within the range set forth herein.↩ 1
F3
The options are fully vested.↩ 1
F4
Each share of Class B common stock held by the Issuer's executive officers, directors and their respective affiliates will convert automatically into one share of Class A common stock upon any transfer that occurs after the closing of the Issuer's initial public offering, except for certain permitted transfers.↩ 1↩ 2↩ 3↩ 4↩ 5↩ 6

Signature 1

Signed
/s/ Andrew Woods, Attorney-in-Fact
Date
2026-09-18

Company context

PubMatic is an independent technology company maximizing customer value by delivering digital advertising’s supply chain of the future. PubMatic’s sell-side platform empowers the world’s leading digital content creators across the open internet to control access to their inventory and increase monetization by enabling marketers to drive return on investment and reach addressable audiences across ad formats and devices. Since 2006, PubMatic’s infrastructure-driven approach has allowed for the efficient processing and utilization of data in real time. By delivering scalable and flexible programmatic innovation, PubMatic improves outcomes for its customers while championing a vibrant and transparent digital advertising supply chain.

Current securities

Recent company filings

  1. 144 filingSep 16, 2026
  2. 144 filingSep 3, 2026
  3. 4 filingSep 2, 2026
  4. 144 filingAug 26, 2026
  5. 144 filingAug 20, 2026

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