PubMatic officer proposes $408K share sale

Two of the three prior sales listed for the officer are identified as made under a Rule 10b5-1 sales plan.

Rhea-AI Filing Summary

PubMatic, Inc. officer Steve Pantelick reported a proposed sale of 22,173 common shares, with an aggregate market value of $408,426.66 and an approximate sale date of October 5, 2026. The shares are listed as restricted stock units acquired from the issuer on October 1, 2026; Morgan Stanley Smith Barney LLC is named as broker.

The reported activity also includes sales of 23,491 shares on October 2, 2026, 22,203 shares on August 12, 2026, and 12,548 shares on July 6, 2026. The August and July sales are identified as made under a Rule 10b5-1 sales plan.

Key Figures

Proposed sale: 22,173 common shares Aggregate market value: $408,426.66 Prior sale: 23,491 common shares +2 more

5 metrics

Proposed sale 22,173 common shares Approximate sale date: October 5, 2026

Aggregate market value $408,426.66 Proposed sale of 22,173 common shares

Prior sale 23,491 common shares October 2, 2026

Prior sale 22,203 common shares August 12, 2026; identified as made under a Rule 10b5-1 sales plan

Prior sale 12,548 common shares July 6, 2026; identified as made under a Rule 10b5-1 sales plan

Key Terms

Rule 144, Restricted Stock Units, 10b5-1 Sales Plan

3 terms

Rule 144 regulatory

"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 Units financial

"Restricted Stock Units | Issuer"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

10b5-1 Sales Plan regulatory

"10b5-1 Sales Plan for Steve Pantelick"

A 10b5-1 sales plan is a written, prearranged schedule that company insiders use to buy or sell their employer’s stock under a U.S. securities rule, so trades occur automatically at set times or prices regardless of later private information. It matters to investors because it reduces the risk of insider-trading accusations and signals that certain insider trades were planned ahead—like putting transactions on autopilot—while still affecting share supply and market confidence.

FAQ

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

How many PUBM shares did Steve Pantelick propose to sell?

Steve Pantelick reported a proposed sale of 22,173 common shares, with an aggregate market value of $408,426.66 and an approximate sale date of October 5, 2026.

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

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Available on EDGAR 10/05/2026 - 04:46 PM Accepted by SEC EDGAR 10/05/2026 - 04:46 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	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	6503313485
Name of Person for Whose Account the Securities are To Be Sold	STEVE 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	22173	408426.66	37303647	10/05/2026	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	10/01/2026	Restricted Stock Units	Issuer			22173	10/01/2026	N/A

* 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 M PANTELICK 601 MARSHALL STREET Redwood City CA 94063	Common	10/02/2026	23491	445708.84
10b5-1 Sales Plan for STEVE PANTELICK 601 MARSHALL STREET Redwood City CA 94063	Common	08/12/2026	22203	383065.11
10b5-1 Sales Plan for STEVE PANTELICK 601 MARSHALL STREET Redwood City CA 94063	Common	07/06/2026	12548	168336.44

144: Remarks and Signature

Remarks
Date of Notice	10/05/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/13/2026
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)