PubMatic director granted 15,839 RSUs

Hanebrink Anton reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Hanebrink Anton reported acquisition or exercise transactions in this Form 4 filing.

PubMatic, Inc. director Anton Hanebrink received a grant of 15,839 restricted stock units (RSUs) tied to Class A common stock. Each RSU represents a right to receive one share upon settlement.

The RSUs vest in full on the earliest of the first anniversary of the grant date, immediately before the company’s 2027 annual stockholder meeting, the director’s death or disability, or a change in control. Settlement of shares is deferred until the earliest of the third anniversary of the grant date, death or disability, a change in control, or separation of service, at which point Class A shares will be delivered.

Insider Trade Summary

Grant/Award: 15,839 shares

Grant/Award 1 txn

Insider Hanebrink Anton

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	15,839	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 15,839 contracts (Direct)

Footnotes (3)

1. F1. Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock upon settlement.
2. F2. The RSUs vest in full on the earliest to occur of (a) the first anniversary of the grant date, (b) immediately prior to the Company's annual meeting of stockholders in 2027, (c) the Reporting Person's death or disability, and (d) a change in control of the Issuer. The Reporting Person has elected to defer settlement of the RSUs until the earliest to occur of (i) the third anniversary of the grant date, (ii) the Reporting Person's death or disability, (iii) a change in control of the Issuer, and (iv) the Reporting Person's separation of service from the Issuer. Shares of the Issuer's Class A Common Stock will be delivered to the Reporting Person upon settlement of the RSUs.
3. F3. RSUs do not expire; they either vest or are cancelled prior to vesting date.

Key Figures

RSUs granted: 15,839 RSUs Underlying shares: 15,839 shares Transaction price: $0.00 per RSU +1 more

4 metrics

RSUs granted 15,839 RSUs Restricted stock units granted to director on grant date

Underlying shares 15,839 shares Class A common stock underlying the RSUs

Transaction price $0.00 per RSU Grant/award acquisition, no purchase price

Holdings after grant 15,839 derivative units Total RSUs following this transaction

Key Terms

Restricted Stock Units, Class A Common Stock, change in control, separation of service, +1 more

5 terms

Restricted Stock Units financial

"Each restricted stock unit ("RSU") represents a contingent right to receive one share"

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.

Class A Common Stock financial

"one share of the Issuer's Class A Common Stock upon settlement"

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.

change in control financial

"and (d) a change in control of the Issuer"

A "change in control" occurs when the ownership or management of a company shifts significantly, such as through a merger, acquisition, or sale of a large part of its assets. This change can impact how the company is run and may influence its future direction. For investors, it matters because it can affect the company's stability, strategy, and value, often signaling potential changes in investment risk or opportunity.

separation of service financial

"the Reporting Person's separation of service from the Issuer"

vest financial

"RSUs do not expire; they either vest or are cancelled"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

FAQ

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

What did PubMatic (PUBM) director Anton Hanebrink report in this Form 4?

Anton Hanebrink reported receiving 15,839 restricted stock units from PubMatic. Each RSU represents a right to one share of Class A common stock, subject to vesting and later settlement conditions described in the filing’s footnotes.

How many PubMatic (PUBM) RSUs were granted to the director?

The director was granted 15,839 restricted stock units. These RSUs correspond to 15,839 underlying shares of PubMatic Class A common stock, which will be delivered only after the vesting and settlement conditions outlined in the award terms are satisfied.

When do Anton Hanebrink’s PubMatic (PUBM) RSUs vest?

The RSUs vest in full at the earliest of the first anniversary of the grant date, immediately before the 2027 annual stockholder meeting, the director’s death or disability, or a change in control of PubMatic, according to the award’s vesting schedule.

When will PubMatic (PUBM) shares be delivered for these RSUs?

Shares will be delivered upon settlement at the earliest of the third anniversary of the grant date, the director’s death or disability, a change in control of PubMatic, or the director’s separation of service, following the elected deferral terms.

Did the PubMatic (PUBM) director buy or sell shares in the market?

No open-market buy or sell is reported. The Form 4 shows a grant of 15,839 restricted stock units as compensation, not a purchase or sale of existing PubMatic Class A common shares in the public market.

Do PubMatic (PUBM) RSUs in this Form 4 have an expiration date?

The footnotes state that RSUs do not expire. They either vest under the specified conditions or are cancelled before the vesting date, meaning there is no traditional option-style expiration for these units.

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

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Accepted by SEC EDGAR 06/02/2026 - 05:34 PM EDT 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).

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^*

Hanebrink Anton

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/29/2026

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

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
Restricted Stock Units	(1)	05/29/2026		A		15,839		(2)	(3)	Class A Common Stock	15,839	$0	15,839	D

Explanation of Responses:

1. Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock upon settlement.

2. The RSUs vest in full on the earliest to occur of (a) the first anniversary of the grant date, (b) immediately prior to the Company's annual meeting of stockholders in 2027, (c) the Reporting Person's death or disability, and (d) a change in control of the Issuer. The Reporting Person has elected to defer settlement of the RSUs until the earliest to occur of (i) the third anniversary of the grant date, (ii) the Reporting Person's death or disability, (iii) a change in control of the Issuer, and (iv) the Reporting Person's separation of service from the Issuer. Shares of the Issuer's Class A Common Stock will be delivered to the Reporting Person upon settlement of the RSUs.

3. RSUs do not expire; they either vest or are cancelled prior to vesting date.

	/s/ Andrew Woods, Attorney-in-Fact	06/02/2026
	** 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)