PUBM · PubMatic, Inc.

The sales reported in this line item were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 4, 2026.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.00 to $14.04 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder 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 in this footnote.

The options are fully vested.

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.

The sales reported in this line item were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026.

These securities were transferred by the Reporting Person to The Goel Family Trust, of which the Reporting Person and his spouse are beneficiaries, and were sold by the Goel Family Trust as reported herein.

Represents the weighted average sale price. The lowest price at which shares were sold was $13.90 and the highest price at which shares were sold was $14.04. 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.

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.

The options are fully vested.

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.

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.

Represents the weighted average sale price. The lowest price at which shares were sold was $13.53 and the highest price at which shares were sold was $14.03. 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.

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.

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.

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.

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.

Following the sales reported in this line item, Mr. Goel holds 2,409,495 shares of Class A Common Stock and Class B Common Stock, which figure does not reflect vested but unexercised options, unvested options, or unvested restricted stock units, each as of the date of filing. The option award under which these shares were exercised expires on March 13, 2028.

The sales reported in this line item were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026.

These securities were transferred by the Reporting Person to The Goel Family Trust, of which the Reporting Person and his spouse are beneficiaries, and were sold by the Goel Family Trust as reported herein.

Represents the weighted average sale price. The lowest price at which shares were sold was $13.90 and the highest price at which shares were sold was $13.95. 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.

The options are fully vested.

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.

The sales reported in this line item were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 28, 2025.

The price reported in this line item is a weighted average price. These shares were sold at prices ranging from $13.30 to $13.53, 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.

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 8, 2025.

The price reported in this line item is a weighted average price. These shares were sold at prices ranging from $13.34 to $13.525, 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.

The sales reported on this Form 4 represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units ("RSUs"). The sales were to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

The price reported in this line item is a weighted average price. These shares were sold as part of block trades for multiple security holders of the Issuer at prices ranging from $13.50 to $13.89, 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 with regard to the block trades.

The sales reported on this Form 4 represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units ("RSUs"). The sales were to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

The price reported in this line item is a weighted average price. These shares were sold as part of block trades for multiple security holders of the Issuer at prices ranging from $13.50 to $13.89, 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 with regard to the block trades.

Following the sales reported in this line item, Mr. Goel holds 2,409,495 shares of Class A Common Stock and Class B Common Stock, which figure does not reflect vested but unexercised options, unvested options, or unvested restricted stock units, each as of the date of filing. The option award under which these shares were exercised expires on May 1, 2027.

The sales reported in this line item were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026.

These securities were transferred by the Reporting Person to The Goel Family Trust, of which the Reporting Person and his spouse are beneficiaries, and were sold by the Goel Family Trust as reported herein.

The sales reported on this Form 4 represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units ("RSUs"). The sales were to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

The price reported in this line item is a weighted average price. These shares were sold as part of block trades for multiple security holders of the Issuer at prices ranging from $13.50 to $13.89, 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 with regard to the block trades.

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.

The options are fully vested.

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.

The sales reported in this line item represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units ("RSUs"). The sales were to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

The price reported in this line item is a weighted average price. These shares were sold as part of block trades for multiple security holders of the Issuer at prices ranging from $13.50 to $13.89, 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 with regard to the block trades.

The sales reported in this line item represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units ("RSUs"). The sales were to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

The price reported in this line item is a weighted average price. These shares were sold as part of block trades for multiple security holders of the Issuer at prices ranging from $13.50 to $13.89, 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 with regard to the block trades.

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.

The sales reported on this Form 4 represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units ("RSUs"). The sales were to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

The price reported in this line item is a weighted average price. These shares were sold as part of block trades for multiple security holders of the Issuer at prices ranging from $13.50 to $13.89, 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 with regard to the block trades.

Each RSU represents a right to receive one share of the Issuer's Class A Common Stock at the time of settlement for no consideration.

The RSUs vested as to 1/16th of the total award on April 1, 2024, and 1/16th of the total award will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

RSUs do not expire; they either vest or are canceled prior to the vesting date.

Each RSU represents a right to receive one share of the Issuer's Class A Common Stock at the time of settlement for no consideration.

The RSUs vested as to 1/16th of the total award on April 1, 2025, and 1/16th of the total award will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

RSUs do not expire; they either vest or are canceled prior to the vesting date.

Each RSU represents a right to receive one share of the Issuer's Class A Common Stock at the time of settlement for no consideration.

The RSUs vested as to 1/16th of the total award on April 1, 2023, and 1/16th of the total award will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

RSUs do not expire; they either vest or are canceled prior to the vesting date.

Includes 1,384 shares of Class A Common Stock acquired by the Reporting Person on May 29, 2026 pursuant to the Issuer's employee stock purchase plan.

The options are fully vested.

Following the sales reported in this line item, Mr. Goel holds 2,409,495 shares of Class A Common Stock and Class B Common Stock, which figure does not reflect vested but unexercised options, unvested options, or unvested restricted stock units, each as of the date of filing. The option award under which these shares were exercised expires on May 1, 2027.

The sales reported in this line item were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026.

These securities were transferred by the Reporting Person to The Goel Family Trust, of which the Reporting Person and his spouse are beneficiaries, and were sold by the Goel Family Trust as reported herein.

Represents the weighted average sale price. The lowest price at which shares were sold was $13.90 and the highest price at which shares were sold was $13.97. 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.

Each RSU represents a right to receive one share of the Issuer's Class A Common Stock at the time of settlement for no consideration.

The RSUs vested as to 1/16th of the total award on April 1, 2023, and 1/16th of the total award will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

RSUs do not expire; they either vest or are canceled prior to the vesting date.

Each RSU represents a right to receive one share of the Issuer's Class A Common Stock at the time of settlement for no consideration.

The RSUs vested as to 1/4 of the total award on October 1, 2023 and 1/16th of the RSUs will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

RSUs do not expire; they either vest or are canceled prior to the vesting date.

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.

Each RSU represents a right to receive one share of the Issuer's Class A Common Stock at the time of settlement for no consideration.

The RSUs vested as to 1/16th of the total award on April 1, 2024, and 1/16th of the total award will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

RSUs do not expire; they either vest or are canceled prior to the vesting date.

Each RSU represents a right to receive one share of the Issuer's Class A Common Stock at the time of settlement for no consideration.

The RSUs vested as to 1/16th of the total award on April 1, 2023, and 1/16th of the total award will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

RSUs do not expire; they either vest or are canceled prior to the vesting date.

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.

Each RSU represents a right to receive one share of the Issuer's Class A Common Stock at the time of settlement for no consideration.

The RSUs vested as to 1/16th of the total award on April 1, 2026, and 1/16th of the total award will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

RSUs do not expire; they either vest or are canceled prior to the vesting date.

Each RSU represents a right to receive one share of the Issuer's Class A Common Stock at the time of settlement for no consideration.

The RSUs vested as to 1/16th of the total award on April 1, 2023, and 1/16th of the total award will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

RSUs do not expire; they either vest or are canceled prior to the vesting date.

Each RSU represents a right to receive one share of the Issuer's Class A Common Stock at the time of settlement for no consideration.

The RSUs vested as to 1/16th of the total award on April 1, 2025, and 1/16th of the total award will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

RSUs do not expire; they either vest or are canceled prior to the vesting date.

Each RSU represents a right to receive one share of the Issuer's Class A Common Stock at the time of settlement for no consideration.

The RSUs vested as to 1/16th of the total award on April 1, 2026, and 1/16th of the total award will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

RSUs do not expire; they either vest or are canceled prior to the vesting date.

Each RSU represents a right to receive one share of the Issuer's Class A Common Stock at the time of settlement for no consideration.

The RSUs vested as to 1/16th of the total award on April 1, 2025, and 1/16th of the total award will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

RSUs do not expire; they either vest or are canceled prior to the vesting date.

Each RSU represents a right to receive one share of the Issuer's Class A Common Stock at the time of settlement for no consideration.

The RSUs vested as to 1/16th of the total award on April 1, 2024, and 1/16th of the total award will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

RSUs do not expire; they either vest or are canceled prior to the vesting date.