X0407 4 2023-05-31 1 0001422930 PubMatic, Inc. PUBM 0001191203 CARLBORG W ERIC C/O PUBMATIC, INC. 601 MARSHALL STREET REDWOOD CITY CA 94063 1 0 0 0 0 Class A Common Stock 2023-05-31 4 M 0 5194 0.00 A 267749 D Class A Common Stock 2023-05-31 4 M 0 9062 0.00 A 276811 D Class A Common Stock 2023-05-31 4 M 0 3150 0.00 A 279961 D Class A Common Stock 2023-05-31 4 M 0 1872 0.00 A 281833 D Restricted Stock Units 2023-05-31 4 M 0 5194 0.00 D Class A Common Stock 5194 0 D Restricted Stock Units 2023-05-31 4 M 0 9062 0.00 D Class A Common Stock 9062 0 D Restricted Stock Units 2023-05-31 4 M 0 3150 0.00 D Class A Common Stock 3150 0 D Restricted Stock Units 2023-05-31 4 M 0 1872 0.00 D Class A Common Stock 1872 0 D Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock upon settlement. The RSUs are fully vested. The RSUs will settle upon the earlier of (a) the Reporting Person's death, (b) the Reporting Person's disability, (c) the occurrence of a change in control of the Issuer, and (d) the separation from service of the Reporting Person from the Issuer. RSUs do not expire; they either vest are are cancelled prior to vesting date. The RSUs vest in full on the earliest to occur of (a) the first anniversary of the grant date, (b) immediately prior to the Issuer's annual meeting of stockholders in 2023, (c) the Reporting Person's death or disability, and (d) a change in control of the Issuer. The Reporting Person has elected to defer settlement of the RSUs until the earliest to occur of (i) the third anniversary of the grant date, (ii) the Reporting Person's death or disability, (iii) a change in control of the Issuer, and (iv) the Reporting Person's separation of service from the Issuer. Shares of the Issuer's Class A Common Stock will be delivered to the Reporting Person upon settlement of the RSUs. The RSUs are fully vested. The Reporting Person has elected to defer settlement of the RSUs until the earliest to occur of (a) the Reporting Person's death or disability, (b) a change in control of the Issuer, and (c) the Reporting Person's separation of service from the Issuer. Shares of the Issuer's Class A Common Stock will be delivered to the Reporting Person upon settlement of the RSUs. The RSUs fully vested on May 31, 2023. The Reporting Person has elected to defer settlement of the RSUs until the earliest to occur of (a) the Reporting Person's death or disability, (b) a change in control of the Issuer, and (c) the Reporting Person's separation of service from the Issuer. Shares of the Issuer's Class A Common Stock will be delivered to the Reporting Person upon settlement of the RSUs. /s/ Abigail Hipps, Attorney-in-Fact 2023-06-02