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).

1. Name and Address of Reporting Person* August Capital Management V, L.L.C. (Last) (First) (Middle) C/O AUGUST CAPITAL PMB #456, 660 4TH STREET (Street) SAN FRANCISCO CA 94017 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol PubMatic, Inc. [ PUBM ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 08/24/2021
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

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	08/24/2021		S		39,568	D	$27.8(1)	39,874	D(2)
Class A common stock	08/25/2021		S		12,712	D	$28.01(3)	40,000	D(4)
Class A common stock								389,237	I	See footnote(5)

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

1. Name and Address of Reporting Person* August Capital Management V, L.L.C. (Last) (First) (Middle) C/O AUGUST CAPITAL PMB #456, 660 4TH STREET (Street) SAN FRANCISCO CA 94017 (City) (State) (Zip)

1. Name and Address of Reporting Person* August Capital Strategic Partners V, L.P. (Last) (First) (Middle) C/O AUGUST CAPITAL PMB #456, 660 4TH STREET (Street) SAN FRANCISCO CA 94017 (City) (State) (Zip)

1. Name and Address of Reporting Person* Hornik David (Last) (First) (Middle) C/O AUGUST CAPITAL PMB #456, 660 4TH STREET (Street) SAN FRANCISCO CA 94017 (City) (State) (Zip)

1. Name and Address of Reporting Person* Hartenbaum Howard (Last) (First) (Middle) C/O AUGUST CAPITAL PMB #456, 660 4TH STREET (Street) SAN FRANCISCO CA 94017 (City) (State) (Zip)

Explanation of Responses:

1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.52 to $28.20, inclusive. The reporting person undertakes to provide to the Issuer, any security holder 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.

2. Shares held directly by David M. Hornik.

3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $28.00 to $28.06, inclusive. The reporting person undertakes to provide to the Issuer, any security holder 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.

4. Shares held directly by Howard Hartenbaum.

5. These securities are held by August Capital V Special Opportunities, L.P. (the "Fund"). August Capital Management V, L.L.C. is the general partner of the Fund (the "August General Partner") and may be deemed to have sole voting power and sole investment power over the shares held by the Fund. Howard Hartenbaum and David M. Hornik are the members of the August General Partner and they, along with W. Eric Carlborg as a voting party with respect to the Issuer's securities, may be deemed to share voting and investment power with respect to the shares held by the Fund.

Remarks:

	/s/ Abigail Hipps, Attorney-in-Fact for August Capital entities	08/26/2021
	/s/ Abigail Hipps, Attorney-in-Fact for David M. Hornik	08/26/2021
	/s/ Abigail Hipps, Attorney-in-Fact for Howard Hartenbaum	08/26/2021
	** 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.