Steven Pantelick - 01 Jan 2026 Form 4 Insider Report for PubMatic, Inc. (PUBM)

Role
CHIEF FINANCIAL OFFICER
Signature
/s/ Andrew Woods, Attorney-in-Fact
Issuer symbol
PUBM
Transactions as of
01 Jan 2026
Net transactions value
-$270,290
Form type
4
Filing time
05 Jan 2026, 20:13:50 UTC
Previous filing
03 Oct 2025
Next filing
19 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Pantelick Steven CHIEF FINANCIAL OFFICER C/O PUBMATIC, INC., 601 MARSHALL STREET, REDWOOD CITY /s/ Andrew Woods, Attorney-in-Fact 05 Jan 2026 0001833465

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction PUBM Class A Common Stock Options Exercise $0 +30,965 +108% $0.000000 59,650 01 Jan 2026 Direct F1
transaction PUBM Class A Common Stock Sale $108,238 -12,567 -21% $8.61 47,083 02 Jan 2026 Direct F2, F3
transaction PUBM Class A Common Stock Sale $162,051 -18,398 -39% $8.81 28,685 05 Jan 2026 Direct F4, F5

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction PUBM Restricted Stock Unit Options Exercise $0 -5,056 -100% $0.000000 0 01 Jan 2026 Class A Common Stock 5,056 $0.000000 Direct F6, F7, F8
transaction PUBM Restricted Stock Unit Options Exercise $0 -9,546 -20% $0.000000 38,185 01 Jan 2026 Class A Common Stock 9,546 $0.000000 Direct F6, F8, F9
transaction PUBM Restricted Stock Unit Options Exercise $0 -8,956 -11% $0.000000 71,640 01 Jan 2026 Class A Common Stock 8,956 $0.000000 Direct F6, F8, F10
transaction PUBM Restricted Stock Unit Options Exercise $0 -7,407 -7.7% $0.000000 88,882 01 Jan 2026 Class A Common Stock 7,407 $0.000000 Direct F6, F8, F11
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 Includes 1,068 shares of Class A common stock acquired by the Reporting Person on May 30, 2025 and 591 shares of Class A common stock acquired by the Reporting Person on November 28, 2025 pursuant to the Issuer's employee stock purchase plan.
F2 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.
F3 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 $8.44 to $8.88, 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.
F4 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.
F5 The price reported in this line item is a weighted average price. These shares were sold at prices ranging from $8.745 to $8.93, 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.
F6 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.
F7 The RSUs vested as to 1/16th of the total shares on April 1, 2022, and 1/16th of the total shares vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.
F8 RSUs do not expire; they either vest or are canceled prior to the vesting date.
F9 The RSUs vested as to 1/16th of the total award on April 1, 2023, and 1/16th of the total shares will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.
F10 The RSUs vested as to 1/16th of the total shares on April 1, 2024, and 1/16th of the total shares will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.
F11 The RSUs vested as to 1/16th of the total shares on April 1, 2025, and 1/16th of the total shares will vest quarterly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.