PubMatic (NASDAQ: PUBM) director plans new sale after recent stock disposals

Rhea-AI Filing Summary

PubMatic, Inc. (PUBM) has a notice under Rule 144 from director Paulina Klimenko covering planned sales of common stock. The notice lists up to 31,044 shares of PubMatic common stock to be sold through Morgan Stanley Smith Barney LLC, with an aggregate market value of $507,665.64, and references PubMatic common stock traded on NASDAQ.

The filing also notes future vesting equity awards that may be sold, including 11,780 shares vesting on April 1, 2025, 9,656 shares vesting on April 1, 2026, and 9,608 shares vesting on July 1, 2026, all as restricted stock vesting under a registered plan for services rendered. PubMatic common shares outstanding are listed as 37,303,647.

Over the prior three months, the notice reports several completed sales by Klimenko, including 40,000 shares of common stock sold on August 12, 2026 for $687,872.00, along with additional sales of 9,009 shares, 14,914 shares, and 9,254 shares in early July 2026.

Key Figures

Shares to be sold under Rule 144: 31,044 shares Aggregate market value of planned sale: $507,665.64 PubMatic common shares outstanding: 37,303,647 shares +5 more

8 metrics

Shares to be sold under Rule 144 31,044 shares Planned sale of PubMatic common stock through Morgan Stanley Smith Barney LLC

Aggregate market value of planned sale $507,665.64 Value associated with 31,044 shares of PubMatic common stock

PubMatic common shares outstanding 37,303,647 shares Shares outstanding as listed in the Form 144 securities information section

Sale on August 12, 2026 40,000 shares for $687,872.00 Common stock sold by Paulina Klimenko during the past 3 months

Sale on July 6, 2026 9,009 shares for $120,518.00 Common stock sold by Paulina Klimenko during the past 3 months

Sale on July 2, 2026 14,914 shares for $203,553.73 Common stock sold by Klimenko Paulina during the past 3 months

Restricted stock vesting April 1, 2025 11,780 shares Restricted stock vesting under a registered plan for services rendered

Restricted stock vesting April 1, 2026 9,656 shares Restricted stock vesting under a registered plan for services rendered

Key Terms

Rule 144, Restricted Stock, Registered Plan, Services Rendered

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock financial

"Restricted Stock Vesting Under a Registered Plan"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

Registered Plan financial

"Restricted Stock Vesting Under a Registered Plan"

A registered plan is a savings or investment account that a government recognizes for special tax treatment and rules, such as limits on how much you can put in and conditions for withdrawals. For investors it matters because those rules change how much of your gains are taxed, how quickly your money can be accessed and what strategies make sense — like a labeled jar that gives tax breaks but comes with rules about when and how you can take the money out.

Services Rendered financial

"07/01/2026 | Services Rendered"

FAQ

What does the Form 144 filing disclose for PubM (PubMatic, Inc.)?

The filing discloses that director Paulina Klimenko has filed a Rule 144 notice covering potential sales of 31,044 shares of PubMatic common stock through Morgan Stanley Smith Barney LLC, with an aggregate market value of $507,665.64.

How many PubM (PUBM) shares are covered by Paulina Klimenko’s planned Rule 144 sale?

The notice covers up to 31,044 shares of PubMatic common stock, with an indicated aggregate market value of $507,665.64, to be sold through Morgan Stanley Smith Barney LLC.

What PubM (PUBM) stock sales has Paulina Klimenko reported in the last three months?

Reported sales include 40,000 shares on August 12, 2026 for $687,872.00, plus additional sales of 9,009 shares on July 6, 2026, 14,914 shares on July 2, 2026, and 9,254 shares on July 1, 2026.

What future equity vesting is disclosed for PubM (PUBM) in this Form 144?

The filing lists restricted stock vesting under a registered plan: 11,780 shares vesting on April 1, 2025, 9,656 shares vesting on April 1, 2026, and 9,608 shares vesting on July 1, 2026, all for services rendered.

How many PubM (PUBM) shares are shown as outstanding in the Form 144?

The Form 144 lists 37,303,647 shares of PubMatic common stock outstanding in the securities information section.

Which broker is named for the planned PubM (PUBM) share sale under Rule 144?

The planned sale of 31,044 shares of PubMatic common stock is listed as being through Morgan Stanley Smith Barney LLC Executive Financial Services at 1 New York Plaza, New York.

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

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Available on EDGAR 08/26/2026 - 04:17 PM Accepted by SEC EDGAR 08/26/2026 - 04:15 PM 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	0001974892
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	PAULINA KLIMENKO
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	Director

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	31044	507665.64	37303647	08/26/2026	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	04/01/2025	Restricted Stock Vesting Under a Registered Plan	Issuer			11780	04/01/2025	Services Rendered
Common	04/01/2026	Restricted Stock Vesting Under a Registered Plan	Issuer			9656	04/01/2026	Services Rendered
Common	07/01/2026	Restricted Stock Vesting Under a Registered Plan	Issuer			9608	07/01/2026	Services Rendered

* 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
PAULINA KLIMENKO 601 Marshall Street Redwood City CA 94063	Common	08/12/2026	40000	687872.00
PAULINA KLIMENKO 601 Marshall Street Redwood City CA 94063	COMMON	07/06/2026	9009	120518.00
Klimenko Paulina 601 Marshall Street Redwood City CA 94063	COMMON	07/02/2026	14914	203553.73
PAULINA KLIMENKO 601 Marshall Street Redwood City CA 94063	COMMON	07/01/2026	9254	124175.00

144: Remarks and Signature

Remarks
Date of Notice	08/26/2026
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/ Paulina Klimenko
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)