X0306 4 2021-08-12 0 0001422930 PubMatic, Inc. PUBM 0000900635 GUPTA NARENDRA 3000 SAND HILL ROAD, BLDG. 1, SUITE 260 MENLO PARK CA 94025 1 0 1 0 Class A common stock 2021-08-12 4 C 0 3034653 A 3034653 I See Footnote Class A common stock 2021-08-12 4 J 0 3034653 D 0 I See Footnote Class B common stock 2021-08-12 4 C 0 3034653 0.00 D Class A common stock 3034653 5590190 I See Footnote Class B common stock 2021-08-12 4 J 0 965347 0.00 D Class A common stock 965347 4624843 I See Footnote Class B common stock 2021-08-12 4 J 0 784795 0.00 A Class A common stock 784795 1150182 I See Footnote Represents a pro-rata in-kind distribution of Class A common stock and Class B common stock, and not a purchase or sale, without additional consideration to its partners. 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. These securities are held by Nexus India Capital I, L.P. (Nexus Capital). The sole general partner of Nexus Capital is Nexus India Management I, L.P. (Nexus Management), and the sole general partner of Nexus Management is Nexus India Master Management I, Ltd. (Nexus Master). The Reporting Person holds sole voting, and investment power in Nexus Master, and thus may be deemed to hold sole voting and investment power over these shares. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein, if any. Pursuant to the charter documents of the Issuer, the recipients of such distribution were permitted transferees and thus received such distribution in Class B common stock. These securities are held by the Naren & Vinita Gupta Living Trust, Dated 12/2/94. /s/ Thomas Chow, Attorney-in-Fact 2021-08-16