X0508 4/A 2023-06-02 2023-06-06 0 0001422930 PubMatic, Inc. PUBM 0001833462 Kumar Mukul C/O PUBMATIC, INC. 601 MARSHALL STREET REDWOOD CITY CA 94063 0 1 0 0 President, Engineering 1 Class A Common Stock 2023-06-02 4 C 0 6294 0.00 A 19670 D Class A Common Stock 2023-06-02 4 S 0 6294 18.1219 D 13376 D Class B Common Stock 0.00 2023-06-02 4 C 0 6294 0.00 D Class A Common Stock 6294 183306 D Includes 1,294 shares of Class A Common Stock acquired by the Reporting Person on May 31, 2023 pursuant to the Issuer's employee stock purchase plan. The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 3, 2023. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.00 to $18.32 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. 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, except for certain permitted transfers. This Form 4/A amends the Form 4 filed on June 6, 2023 in its entirety. /s/ Andrew Woods, Attorney-in-Fact 2023-07-19