PubMatic executive sells 8,000 shares under 10b5-1 plan

Mukul Kumar, President, Engineering of PubMatic, Inc., sold 8,000 shares of Class A common stock at a weighted average price of $13.6681 per share on July 16, 2026, under a Rule 10b5-1 trading plan adopted on March 3, 2026.

Rhea-AI Filing Summary

Mukul Kumar, President, Engineering of PubMatic, Inc., sold 8,000 shares of Class A common stock at a weighted average price of $13.6681 per share on July 16, 2026, under a Rule 10b5-1 trading plan adopted on March 3, 2026.

The sale price ranged from $13.53 to $14.03. On the same date he converted 8,000 shares of Class B common stock into 8,000 shares of Class A common stock and exercised stock options for 8,000 shares at an exercise price of $2.15 per share. Following these transactions, he held 112,945 Class A and 143,600 Class B shares directly, plus stock options for 31,000 Class B shares.

Insider Trade Summary 10b5-1

Exercise and sale activity reported; no spread calculated

Exercise and Sale 5 txns

Insider Kumar Mukul

Role PRESIDENT, ENGINEERING

Sold 8,000 shs ($109K)

Approx. gross sale proceeds $109K

Type	Security	Shares	Price	Value
Exercise	Stock Option (Right to buy Class B Common Stock) F3	8,000	$0.00	$0.00
Exercise	Class B Common Stock F4	8,000	$2.15	$17K
Conversion	Class B Common Stock F4	8,000	$0.00	$0.00
Conversion	Class A Common Stock	8,000	$0.00	$0.00
Sale	Class A Common Stock F1, F2	8,000	$13.6681	$109K

Holdings After Transaction: Stock Option (Right to buy Class B Common Stock) — 31,000 contracts (Direct); Class B Common Stock — 135,600 contracts (Direct); Class A Common Stock — 112,945 shares (Direct)

Footnotes (4)

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 March 3, 2026.
2. F2. Represents the weighted average sale price. The lowest price at which shares were sold was $13.53 and the highest price at which shares were sold was $14.03. The Reporting Person undertakes to provide upon request to the staff of the Securities and Exchange Commission, the Issuer or its stockholders, full information regarding the total number of shares sold at each separate price within the range set forth herein.
3. F3. The options are fully vested.
4. F4. Each share of Class B common stock held by the Issuer's executive officers, directors and their respective affiliates will convert automatically into one share of Class A common stock upon any transfer that occurs after the closing of the Issuer's initial public offering, except for certain permitted transfers.

Key Figures

Class A shares sold: 8,000 shares Weighted average sale price: $13.6681 per share Sale price range: $13.53–$14.03 per share +5 more

8 metrics

Class A shares sold 8,000 shares Sale of Class A common stock on July 16, 2026

Weighted average sale price $13.6681 per share Class A common stock sale on July 16, 2026

Sale price range $13.53–$14.03 per share Range of prices for sold Class A shares

Class A holdings after sale 112,945 shares Direct Class A common stock owned after transactions

Class B holdings after conversions 143,600 shares Direct Class B common stock owned after derivative transactions

Options remaining 31,000 shares Stock options for Class B common stock after exercising 8,000 options

Option exercise price $2.15 per share Exercise price for stock options on Class B common stock

Option expiration date May 1, 2027 Expiration of stock options on Class B common stock

Key Terms

Rule 10b5-1 trading plan, weighted average sale price, Class B common stock, derivative security, +1 more

5 terms

Rule 10b5-1 trading plan regulatory

"The sales reported in this line item 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 sale price financial

"Represents the weighted average sale price. The lowest price at which shares were sold"

Class B common stock financial

"Each share of Class B common stock held by the Issuer's executive officers"

A class B common stock is one of multiple types of a company’s ordinary shares that carries specific rights—often different voting power or dividend priority—compared with other classes. For investors it matters because those differences affect how much influence you have over company decisions, the income you might receive, and how freely the shares trade; think of it like owning a car with different keys: some keys let you start the engine and open the trunk, others only unlock the door.

derivative security financial

"Conversion of derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

initial public offering financial

"occurs after the closing of the Issuer's initial public offering, except for certain permitted"

An initial public offering (IPO) is when a private company first sells its shares to the public and becomes a stock-listed company. It matters because it allows the company to raise money from a wide range of investors, helping it grow, while giving early shareholders a way to sell some of their ownership.

FAQ

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

What did PubMatic (PUBM) executive Mukul Kumar report in this Form 4?

Mukul Kumar reported transactions on July 16, 2026, including selling 8,000 shares of Class A common stock and related conversions and option exercises. These activities affected his holdings in both Class A and Class B shares and his remaining stock options.

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

He sold 8,000 shares of Class A common stock at a weighted average price of $13.6681 per share. The sale price ranged between $13.53 and $14.03, as disclosed, reflecting multiple trades within that range on the transaction date.

Was Mukul Kumar’s PubMatic (PUBM) stock sale under a Rule 10b5-1 plan?

Yes. The sale of 8,000 Class A shares was effected under a Rule 10b5-1 trading plan adopted by Mukul Kumar on March 3, 2026. Such plans pre-arrange trades, providing structure for periodic share sales over time.

What are Mukul Kumar’s PubMatic (PUBM) share holdings after these transactions?

After the reported transactions, Mukul Kumar directly held 112,945 shares of Class A common stock and 143,600 shares of Class B common stock. He also held stock options covering 31,000 shares of Class B common stock following the partial option exercise.

Did Mukul Kumar exercise PubMatic (PUBM) stock options in this filing?

Yes. He exercised options for 8,000 shares of Class B common stock at an exercise price of $2.15 per share. After this exercise, stock options for 31,000 Class B shares remained outstanding, expiring on May 1, 2027.

How did PubMatic (PUBM) Class B shares convert in Mukul Kumar’s transactions?

On July 16, 2026, 8,000 Class B shares were converted into 8,000 Class A shares. A footnote explains that each Class B share held by executives automatically converts to Class A upon certain transfers following the company’s initial public offering.

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

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Accepted by SEC EDGAR 07/17/2026 - 05:20 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED 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^*

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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	PRESIDENT, ENGINEERING

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/16/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	07/16/2026		C		8,000	A	$0	120,945	D
Class A Common Stock	07/16/2026		S(1)		8,000	D	$13.6681(2)	112,945	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to buy Class B Common Stock)	$2.15	07/16/2026		M			8,000	(3)	05/01/2027	Class B Common Stock	8,000	$0	31,000	D
Class B Common Stock	(4)	07/16/2026		M		8,000		(4)	(4)	Class A Common Stock	8,000	$2.15	143,600	D
Class B Common Stock	(4)	07/16/2026		C			8,000	(4)	(4)	Class A Common Stock	8,000	$0	135,600	D

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 March 3, 2026.

2. Represents the weighted average sale price. The lowest price at which shares were sold was $13.53 and the highest price at which shares were sold was $14.03. The Reporting Person undertakes to provide upon request to the staff of the Securities and Exchange Commission, the Issuer or its stockholders, full information regarding the total number of shares sold at each separate price within the range set forth herein.

3. The options are fully vested.

4. Each share of Class B common stock held by the Issuer's executive officers, directors and their respective affiliates will convert automatically into one share of Class A common stock upon any transfer that occurs after the closing of the Issuer's initial public offering, except for certain permitted transfers.

	/s/ Andrew Woods, Attorney-in-Fact	07/17/2026
	** Signature of Reporting Person	Date
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)