X0508 4 2023-07-17 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 0 Class A Common Stock 2023-07-17 4 S 0 5000 19.1846 D 6228 D 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 $19.06 to $19.44 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. /s/ Andrew Woods, Attorney-in-Fact 2023-07-18