PubMatic insider plans sale of 19,716 shares

PubMatic, Inc. insider Steve Pantelick filed a notice for a potential sale of 19,716 shares of common stock, with an indicated aggregate market value of $341,205.10, to be sold through Morgan Stanley Smith Barney LLC on or after August 13, 2026 on NASDAQ.

Rhea-AI Filing Summary

PubMatic, Inc. insider Steve Pantelick filed a notice for a potential sale of 19,716 shares of common stock, with an indicated aggregate market value of $341,205.10, to be sold through Morgan Stanley Smith Barney LLC on or after August 13, 2026 on NASDAQ. The shares derive from prior restricted stock vesting under registered compensation plans and purchases through an employee stock purchase plan, and follow several common stock sales over the past three months.

Key Figures

Shares proposed for sale: 19,716 shares Aggregate market value of proposed sale: $341,205.10 Recent sale on August 12, 2026: 22,203 shares for $383,063.92 +4 more

7 metrics

Shares proposed for sale 19,716 shares Common stock proposed for sale through broker on or after August 13, 2026

Aggregate market value of proposed sale $341,205.10 Indicated aggregate market value for 19,716 common shares

Recent sale on August 12, 2026 22,203 shares for $383,063.92 Common stock sold by Steve Pantelick during past three months

Recent sale on July 6, 2026 12,548 shares for $168,336.44 Common stock sold by Steve Pantelick during past three months

Recent sale on July 1, 2026 23,548 shares for $321,430.20 Common stock sold by Steve Pantelick during past three months

ESPP purchase May 28, 2021 2,500 shares Shares purchased through Employee Stock Purchase Plan from issuer

ESPP purchase May 31, 2022 1,250 shares Shares purchased through Employee Stock Purchase Plan from issuer

Key Terms

Form 144, Restricted Stock Vesting Under a Registered Plan, Employee Stock Purchase Plan, aggregate market value

4 terms

Form 144 regulatory

"144: Securities Sold During The Past 3 Months"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Restricted Stock Vesting Under a Registered Plan financial

"Common | 06/30/2021 | Restricted Stock Vesting Under a Registered Plan"

Employee Stock Purchase Plan financial

"Shares Purchased Through Employee Stock Purchase Plan"

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

aggregate market value financial

"Common | Morgan Stanley Smith Barney LLC ... 341205.10"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does PubMatic (PUBM) insider Steve Pantelick’s Form 144 filing disclose?

The filing discloses a proposed sale of 19,716 shares of PubMatic common stock, with an indicated aggregate market value of $341,205.10, to be sold through Morgan Stanley Smith Barney LLC on or after August 13, 2026.

How many PubMatic (PUBM) shares is Steve Pantelick proposing to sell?

Steve Pantelick is proposing to sell 19,716 shares of PubMatic common stock. The filing lists these shares with an indicated aggregate market value of $341,205.10 and identifies NASDAQ as the trading market for the planned transactions.

When are the PubMatic (PUBM) shares in this Form 144 expected to be sold?

The shares are expected to be sold on or after August 13, 2026. The notice identifies NASDAQ as the market and Morgan Stanley Smith Barney LLC as the broker for the 19,716-share proposed sale of PubMatic common stock.

How did Steve Pantelick acquire the PubMatic (PUBM) shares covered by this Form 144?

The shares were acquired mainly through restricted stock vesting under a registered plan and through an employee stock purchase plan, with specific acquisition dates including 2021–2024 vesting events and ESPP purchases in May 2021 and May 2022.

What PubMatic (PUBM) stock sales has Steve Pantelick made in the last three months?

Recent reported sales include 22,203 shares for $383,063.92 on August 12, 2026, 12,548 shares for $168,336.44 on July 6, 2026, and 23,548 shares for $321,430.20 on July 1, 2026, all in PubMatic common stock.

Which broker is handling Steve Pantelick’s planned PubMatic (PUBM) share sale?

The broker listed is Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004, for the proposed sale of 19,716 PubMatic common shares on NASDAQ.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 08/13/2026 - 04:31 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001833465
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	PUBMATIC, INC.
SEC File Number	001-39748
Address of Issuer	601 Marshall Street Redwood City CALIFORNIA 94063
Phone	650-331-3485
Name of Person for Whose Account the Securities are To Be Sold	STEVE M PANTELICK
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	19716	341205.10	37303647	08/13/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	06/30/2021	Restricted Stock Vesting Under a Registered Plan	Issuer			1965	06/30/2021	Compensation
Common	09/30/2021	Restricted Stock Vesting Under a Registered Plan	Issuer			1065	09/30/2021	Compensation
Common	12/31/2021	Restricted Stock Vesting Under a Registered Plan	Issuer			2261	12/31/2021	Compensation
Common	03/31/2022	Restricted Stock Vesting Under a Registered Plan	Issuer			2260	03/31/2022	Compensation
Common	11/30/2023	Restricted Stock Vesting Under a Registered Plan	Issuer			61	11/30/2023	Compensation
Common	04/01/2024	Restricted Stock Vesting Under a Registered Plan	Issuer			4177	04/01/2024	Compensation
Common	07/01/2024	Restricted Stock Vesting Under a Registered Plan	Issuer			2169	07/01/2024	Compensation
Common	07/01/2024	Restricted Stock Vesting Under a Registered Plan	Issuer			189	07/01/2024	Compensation
Common	07/01/2024	Restricted Stock Vesting Under a Registered Plan	Issuer			1819	07/01/2024	Compensation
Common	05/28/2021	Shares Purchased Through Employee Stock Purchase Plan	Issuer			2500	05/28/2021	Cash
Common	05/31/2022	Shares Purchased Through Employee Stock Purchase Plan	Issuer			1250	05/31/2022	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Steve Pantelick 601 Marshall Street Redwood City CA 94063	Common	08/12/2026	22203	383063.92
Steve Pantelick 601 Marshall Street Redwood City CA 94063	Common	07/06/2026	12548	168336.44
Steve Pantelick 601 Marshall Street Redwood City CA 94063	Common	07/01/2026	23548	321430.20

144: Remarks and Signature

Remarks
Date of Notice	08/13/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Steve Pantelick
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)