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PubMatic (PUBM) CFO trades 41,919 shares in planned 10b5-1 stock sales

Filing Impact
(Very High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

PubMatic, Inc. Chief Financial Officer Steven Pantelick reported open-market sales of a total of 41,919 shares of Class A Common Stock on August 12–13, 2026. The trades, executed at weighted average prices around $17.25–$17.31 within disclosed price ranges, were effected under a Rule 10b5-1 trading plan adopted on May 13, 2026.

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Insider Pantelick Steven
Role CHIEF FINANCIAL OFFICER
Sold 41,919 shs ($724K)
Type Security Shares Price Value
Sale Class A Common Stock F3 19,716 $17.306 $341K
Sale Class A Common Stock F1, F2 22,203 $17.2528 $383K
Holdings After Transaction: Class A Common Stock — 10,353 shares (Direct)
Footnotes (3)
  1. F1. The sales reported in this line item were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 13, 2026.
  2. F2. The price reported in this line item is a weighted average price. These shares were sold at prices ranging from $17.08 to $17.78, 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.
  3. F3. The price reported in this line item is a weighted average price. These shares were sold at prices ranging from $17.05 to $17.618, 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.
Shares sold on 2026-08-12 22,203 shares Open-market sale of Class A Common Stock by CFO
Weighted average price 2026-08-12 $17.2528 per share Weighted average sale price; trades ranged from $17.08 to $17.78
Shares sold on 2026-08-13 19,716 shares Open-market sale of Class A Common Stock by CFO
Weighted average price 2026-08-13 $17.3060 per share Weighted average sale price; trades ranged from $17.05 to $17.618
Total shares sold 41,919 shares Combined shares sold on August 12–13, 2026
Rule 10b5-1 trading plan regulatory
"The sales reported ... were effected pursuant to a Rule 10b5-1 trading plan"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"The price reported ... is a weighted average price. These shares were sold"
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.
Class A Common Stock financial
"security_title: Class A Common Stock for both reported transactions"
Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

FAQ

What insider transactions did PubMatic (PUBM) report for CFO Steven Pantelick?
PubMatic CFO Steven Pantelick reported selling 41,919 shares of Class A Common Stock on August 12–13, 2026. These open-market sales were executed at weighted average prices around $17.25–$17.31 per share under a Rule 10b5-1 trading plan.

At what prices did the PubMatic (PUBM) CFO sell shares?
The CFO’s reported sales used weighted average prices of $17.2528 and $17.3060 per share. Underlying trades occurred in ranges of $17.08–$17.78 and $17.05–$17.618, with full breakdowns available on request to the company or regulators.

Were the PubMatic (PUBM) CFO’s share sales made under a Rule 10b5-1 plan?
Yes. The filing states the sales were effected under a Rule 10b5-1 trading plan adopted by the reporting person on May 13, 2026. Such plans pre-schedule trades, which can reduce the informational significance of transaction timing.

How many PubMatic (PUBM) shares did the CFO sell on each day?
Steven Pantelick sold 22,203 shares of Class A Common Stock on August 12, 2026 and 19,716 shares on August 13, 2026. Both transactions were coded as open-market or private sales of non-derivative securities.

Does the PubMatic (PUBM) Form 4 show remaining holdings for the CFO after these sales?
The reported transactions list shares sold and prices but do not include a line showing the CFO’s total holdings following the sales. The filing therefore only details the 41,919 shares sold in these specific transactions.

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Form 4 Insider Transactions: What Each Field Means →
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).
X
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*
Pantelick Steven
(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)
CHIEF FINANCIAL OFFICER
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/12/2026		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 Stock08/12/2026S(1)22,203D$17.2528(2)30,069D
Class A Common Stock08/13/2026S19,716D$17.306(3)10,353D
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
Explanation of Responses:
1. The sales reported in this line item were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 13, 2026.
2. The price reported in this line item is a weighted average price. These shares were sold at prices ranging from $17.08 to $17.78, 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.
3. The price reported in this line item is a weighted average price. These shares were sold at prices ranging from $17.05 to $17.618, 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.
/s/ Andrew Woods, Attorney-in-Fact08/14/2026
** 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)

Source: View Original Filing on SEC EDGAR