STOCK TITAN

PubMatic (NASDAQ: PUBM) president sells 7,830 shares in tax sell-to-cover

Filing Impact
(Neutral)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

PubMatic, Inc. president of engineering Mukul Kumar reported routine equity compensation activity and a related tax sale. On April 1, 2026, he acquired 19,974 shares of Class A Common Stock at $0.00 per share through the vesting and settlement of restricted stock units (RSUs).

On April 2, 2026, he sold 7,830 shares of Class A Common Stock in open-market block trades at a weighted average price of $8.1733 per share, with trade prices ranging from $7.98 to $8.27. According to the disclosure, these sales were made solely to cover tax withholding obligations from the RSU vesting via a “sell to cover” transaction. After these transactions, he directly holds 99,485 shares of Class A Common Stock.

Positive

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Negative

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Insider Kumar Mukul
Role PRESIDENT, ENGINEERING
Sold 7,830 shs ($64K)
Type Security Shares Price Value
Sale Class A Common Stock 7,830 $8.1733 $64K
Exercise Restricted Stock Unit 4,279 $0.00 --
Exercise Restricted Stock Unit 4,014 $0.00 --
Exercise Restricted Stock Unit 3,321 $0.00 --
Exercise Restricted Stock Unit 8,360 $0.00 --
Exercise Class A Common Stock 19,974 $0.00 --
Holdings After Transaction: Class A Common Stock — 99,485 shares (Direct); Restricted Stock Unit — 12,838 shares (Direct)
Footnotes (1)
  1. 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 $7.98 to $8.27, 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, 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. 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. 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. 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.
Shares sold 7,830 shares Open-market sale on April 2, 2026 at weighted $8.1733
Weighted average sale price $8.1733 per share Block trades between $7.98 and $8.27 on April 2, 2026
Shares acquired via RSU settlement 19,974 shares Class A Common Stock from RSU vesting at $0.00 on April 1, 2026
Shares held after transactions 99,485 shares Direct Class A Common Stock holdings following April 2026 activity
Derivative RSU conversions 4,279; 4,014; 3,321; 8,360 units Multiple RSU awards converting into Class A Common Stock
Net buy/sell shares -7,830 shares Net share disposition across buy/sell activity in this Form 4
Restricted Stock Unit financial
"Each RSU represents a right to receive one share of Class A Common Stock"
A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.
sell to cover financial
"Sales were to satisfy tax withholding obligations funded by a "sell to cover" transaction"
Sell to cover is when a person who receives company stock through options or awards sells just enough shares immediately to pay required taxes, exercise costs, or fees, keeping the rest. Think of it like cashing part of a bonus to cover the tax bill so you can keep the remainder. For investors, it can create predictable small selling pressure and slightly change the number of shares actually held by insiders without increasing long‑term dilution.
weighted average price financial
"The price reported is a weighted average price for block trades between $7.98 and $8.27"
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
block trades financial
"These shares were sold as part of block trades for multiple security holders"
A block trade is a single, large buy or sell of shares or bonds arranged privately between big traders rather than piecemeal on the public market. Think of it like buying a whole shipment at once instead of many small shopping trips; it lets large holders move big positions with less immediate disruption but can signal strong buying or selling pressure and cause price swings once the trade is known, so investors watch block trades for clues about market sentiment and liquidity.
vesting financial
"The RSUs vested as to 1/16th of the total award on April 1 and quarterly thereafter"
Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a 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). See Instruction 10.
1. Name and Address of Reporting Person*
Kumar Mukul

(Last)(First)(Middle)
C/O PUBMATIC, INC.
601 MARSHALL STREET

(Street)
REDWOOD CITY CALIFORNIA 94063

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
PubMatic, Inc. [ PUBM ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
PRESIDENT, ENGINEERING
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
01/01/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Class A Common Stock04/01/2026M19,974A$0107,315D
Class A Common Stock04/02/2026S(1)7,830D$8.1733(2)99,485D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Unit$0(3)04/01/2026M4,279 (4) (5)Class A Common Stock4,279$012,838D
Restricted Stock Unit$0(3)04/01/2026M4,014 (6) (5)Class A Common Stock4,014$028,100D
Restricted Stock Unit$0(3)04/01/2026M3,321 (7) (5)Class A Common Stock3,321$036,523D
Restricted Stock Unit$0(3)04/01/2026M8,360 (8) (5)Class A Common Stock8,360$0125,401D
Explanation of Responses:
1. 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.
2. 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 $7.98 to $8.27, 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.
3. 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.
4. 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.
5. RSUs do not expire; they either vest or are canceled prior to the vesting date.
6. 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.
7. 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.
8. 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.
/s/ Andrew Woods, Attorney-in-Fact04/03/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transactions did PubMatic (PUBM) executive Mukul Kumar report?

Mukul Kumar reported RSU vesting into 19,974 Class A shares at $0.00 per share and a related sale of 7,830 shares. The sale on April 2, 2026 was an open-market block trade to cover tax withholding obligations from the RSU settlement.

How many PubMatic (PUBM) shares did Mukul Kumar sell and at what price?

He sold 7,830 shares of PubMatic Class A Common Stock at a weighted average price of $8.1733 per share. The block trades executed between $7.98 and $8.27, as disclosed, and were specifically used to fund tax withholding from recent RSU vesting.

Why did PubMatic (PUBM) executive Mukul Kumar sell 7,830 shares?

The filing states the 7,830 shares were sold solely to cover tax withholding obligations tied to RSU vesting and settlement. This “sell to cover” transaction converts part of the new RSU-derived shares into cash for taxes, rather than reflecting a discretionary portfolio reallocation.

How many PubMatic (PUBM) shares does Mukul Kumar hold after these Form 4 transactions?

After the reported transactions, Mukul Kumar directly holds 99,485 shares of PubMatic Class A Common Stock. This reflects the impact of RSU settlement adding 19,974 shares and the tax-related sale of 7,830 shares executed on April 2, 2026 in open-market block trades.

What RSU activity did PubMatic (PUBM) disclose for Mukul Kumar in this Form 4?

Several restricted stock unit positions converted into Class A Common Stock on April 1, 2026, including a 19,974-share settlement at $0.00 per share. Footnotes explain that each RSU converts into one share upon vesting, with quarterly vesting schedules tied to continued service.

How do the RSU vesting schedules work for PubMatic (PUBM) executive Mukul Kumar?

Footnotes show multiple RSU awards vest as to 1/16th of the total award on April 1 of the initial year, then 1/16th quarterly thereafter. Continued service to PubMatic on each vesting date is required, and RSUs either vest into shares or are canceled before vesting.