Thomas Chow - Jun 1, 2021 Form 4 Insider Report for PubMatic, Inc. (PUBM)

Role: General Counsel and Secretary
Signature: /s/ Thomas Chow
Stock symbol: PUBM
Transactions as of: Jun 1, 2021
Transactions value $: -$507,161
Form type: 4
Date filed: 6/3/2021, 11:43 AM
Next filing: Jul 2, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	PUBM	Class A Common Stock	Conversion of derivative security	$0	+15K	+803.86%	$0.00	16.9K	Jun 1, 2021	Direct	F1
transaction	PUBM	Class A Common Stock	Sale	-$507K	-16.9K	-100%	$30.07	0	Jun 1, 2021	Direct	F2, F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	PUBM	Stock Option (Right to buy Class B Common Stock)	Options Exercise	$0	-15K	-20%	$0.00	60K	Jun 1, 2021	Class B Common Stock	15K	$3.89	Direct	F4
transaction	PUBM	Class B Common Stock	Options Exercise	$0	+15K		$0.00	15K	Jun 1, 2021	Class A Common Stock	15K		Direct	F5
transaction	PUBM	Class B Common Stock	Conversion of derivative security	$0	-15K	-100%	$0.00^*	0	Jun 1, 2021	Class A Common Stock	15K		Direct	F5

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Includes 1,866 shares of the Issuer's Class A common stock acquired on May 28, 2021 pursuant to the Issuer's Employee Stock Purchase Plan.
F2	The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2021.
F3	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions in prices ranging from $29.97 to $30.16, 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 in this footnote 3 to this Form 4.
F4	The option vests as to 25% of the total shares on July 10, 2019, and 1/4 of the total shares will vest monthly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.
F5	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, except for certain permitted transfers.