SEC ownership of PubMatic, Inc.

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001422930.

Comparable stake leader

Graham Holdings Co

Disclosed value leader

VANGUARD GROUP INC

Comparable rows

50/50

Latest evidence

29 May 2026

Top shareholders Insider holders Latest transactions
Public ticker
PUBM on Nasdaq
Parsed ownership sources
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
Largest SEC-reported holder
Graham Holdings Co
Ranking: Comparable ownership first, then disclosed value
Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 3 signals
Comparable ownership rows
50 of 50
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder
Graham Holdings Co
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date
29 May 2026
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0001422930
Issuer location
Redwood City, CA

Ownership snapshot

Top shareholders of PubMatic, Inc. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
Graham Holdings Co
Disclosed value leader
VANGUARD GROUP INC
Comparable rows
50/50
Latest evidence
29 May 2026
13D/G 13F 3/4/5 Lead comparable stake: 8.9% 13D/G row: Graham Holdings Co Showing 1-8 of 50 holder rows.

Quick read

Graham Holdings Co leads the comparable SEC ownership view at 8.9%.

50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Graham Holdings Co's linked filing trail.
Comparable ownership Top 5
Graham Holdings Co 8.9%
BlackRock, Inc. 7.1%
VANGUARD GROUP INC 6.5%
Shelagh Glaser 0.06%
Yakov (jacob) Shulman 0.05%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-8 of 50 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
Graham Holdings Co
13D/G 13F
Graham Holdings Company · Company
13D/G 13F
8.9%
$27,803,035
3,398,904 shares
 +$4,641,676 31 Mar 2026
BlackRock, Inc.
13F 13D/G
Company
13F 13D/G
7.1%
from 13D/G
$25,071,995
3,065,036 shares
 — 31 Mar 2026
VANGUARD GROUP INC
13D/G
The Vanguard Group
13D/G
6.5%
$32,483,067
2,611,179 shares
 -$9,982,155 30 Jun 2025
Shelagh Glaser
3/4/5
Director
3/4/5
0.06%
$305,125
21,502 shares
mixed-class rows
 — 29 May 2026
Yakov (jacob) Shulman
3/4/5
Director
3/4/5
0.05%
$276,773
18,036 shares
mixed-class rows
 — 29 May 2026
CenterBook Partners LP
13F
Company
13F
4.6%
$14,250,378
1,742,100 shares
 — 31 Mar 2026
VANGUARD CAPITAL MANAGEMENT LLC
13F
Company
13F
4.2%
$13,200,630
1,613,769 shares
 — 31 Mar 2026
ACADIAN ASSET MANAGEMENT LLC
13F
Company
13F
4.1%
$12,890,000
1,576,540 shares
 — 31 Mar 2026
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Net insider flow leans to selling over the last 12 months. Net value: -$14,271,929.

Buys
$0
Insiders: 0
Sells
$14,271,929
Insiders: 7
Net
-$14,271,929
Shares: -1,530,276
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 0 Shares: 1,530,276
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 0 410,489 $0 $4,888,788 -$4,888,788
3-6 0 369,757 $0 $2,926,686 -$2,926,686
6-9 0 409,597 $0 $3,485,005 -$3,485,005
9-12 0 340,433 $0 $2,971,450 -$2,971,450

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-20 of 26 reporting-owner rows connected to PubMatic, Inc.. Open a relationship link for the CIK-to-CIK filing trail.

Rows
26
Largest Forms 3/4/5 holder
NEXUS INDIA CAPITAL I L P
Net 12M change
-$14,271,930
Latest report
16 Jul 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
NEXUS INDIA CAPITAL I L P 10%+ Owner $39,980,034 Mixed 12 Nov 2021
Amar K. Goel CHAIRMAN, CHIEF INNOVATION OFF, Director, 10%+ Owner $37,495,113 -$422,515 -1.1% Mixed 01 Jul 2026
Helion Venture Partners LLC 10%+ Owner $36,664,737 Mixed 29 Nov 2021
August Capital Management V, L.L.C. 10%+ Owner $32,569,910 Mixed 15 Nov 2021
Narendra Gupta Director $31,339,702 Mixed 01 Dec 2021
Rajeev K. Goel CHIEF EXECUTIVE OFFICER, Director, 10%+ Owner $12,397,153 -$10,870,135 -47% Mixed 15 Jul 2026
DRAPER ASSOCIATES L P 10%+ Owner $10,973,724 Mixed 28 May 2021
Steven Pantelick Chief Financial Officer $8,996,961 -$1,322,574 -13% Mixed 01 Jul 2026
W. Eric Carlborg Director $4,308,494 Mixed 31 May 2023
Mukul Kumar President, Engineering $4,219,573 -$469,544 -10% Mixed 16 Jul 2026
Paulina Klimenko Chief Growth Officer $2,952,470 -$885,150 -23% Mixed 01 Jul 2026
CNH Capital Co Ltd 10%+ Owner $2,354,090 Mixed 19 Mar 2021
Andrew Woods General Counsel & Secretary $2,141,085 -$246,686 -10% Mixed 16 Jul 2026
Jeffrey K. Hirsch Former Chief Commercial Off. $1,511,841 Mixed 31 Mar 2023
Thomas C. Chow General Counsel and Secretary $522,108 Mixed 05 Jul 2022
Susan Daimler Director $348,374 Mixed 29 May 2026
Anton Hanebrink Director $339,671 Mixed 29 May 2026
Lisa Gimbel Chief Accounting Officer $332,578 -$55,326 -14% Mixed 15 May 2026
Howard Hartenbaum 10%+ Owner $305,748 Mixed 31 Dec 2021
Shelagh Glaser Director $305,125 Mixed 29 May 2026

Recent insider transactions for PubMatic, Inc.

Showing up to 300 recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % SEC-reported value SEC-reported price Shares Shares owned Date Ownership
Rajeev K. Goel PUBM Class A Common Stock Sale -15.9% $124,955 $13.94 -8,962 47,301 16 Jul 2026 Direct
Rajeev K. Goel PUBM Class A Common Stock Conversion of derivative security 19% 8,962 56,263 16 Jul 2026 Direct
Rajeev K. Goel PUBM Class B Common Stock Conversion of derivative security -4.07% -8,962 210,984 16 Jul 2026 Direct
Rajeev K. Goel PUBM Class B Common Stock Options Exercise 4.25% 8,962 219,946 16 Jul 2026 Direct
Rajeev K. Goel PUBM Stock Option (Right to buy Class B Common Stock) Options Exercise -2.8% -8,962 311,302 16 Jul 2026 Direct
Mukul Kumar PUBM Class A Common Stock Sale -6.61% $109,345 $13.67 -8,000 112,945 16 Jul 2026 Direct
Mukul Kumar PUBM Class A Common Stock Conversion of derivative security 7.08% 8,000 120,945 16 Jul 2026 Direct
Mukul Kumar PUBM Class B Common Stock Conversion of derivative security -5.57% -8,000 135,600 16 Jul 2026 Direct
Mukul Kumar PUBM Class B Common Stock Options Exercise 5.9% 8,000 143,600 16 Jul 2026 Direct
Mukul Kumar PUBM Stock Option (Right to buy Class B Common Stock) Options Exercise -20.5% -8,000 31,000 16 Jul 2026 Direct
Andrew Woods PUBM Class A Common Stock Sale -3.98% $45,374 $14.01 -3,239 78,092 16 Jul 2026 Direct
Rajeev K. Goel PUBM Class A Common Stock Sale -7.9% $56,448 $13.90 -4,060 47,301 15 Jul 2026 Direct
Rajeev K. Goel PUBM Class A Common Stock Conversion of derivative security 8.58% 4,060 51,361 15 Jul 2026 Direct
Rajeev K. Goel PUBM Class B Common Stock Conversion of derivative security -1.89% -4,060 210,984 15 Jul 2026 Direct
Rajeev K. Goel PUBM Class B Common Stock Options Exercise 1.92% 4,060 215,044 15 Jul 2026 Direct
Rajeev K. Goel PUBM Stock Option (Right to buy Class B Common Stock) Options Exercise -1.25% -4,060 320,264 15 Jul 2026 Direct
Steven Pantelick PUBM Class A Common Stock Sale -19.4% $168,336 $13.42 -12,548 52,272 06 Jul 2026 Direct
Paulina Klimenko PUBM Class A Common Stock Sale -11.2% $120,887 $13.42 -9,009 71,044 06 Jul 2026 Direct
Steven Pantelick PUBM Class A Common Stock Sale -26.6% $321,395 $13.65 -23,548 64,820 02 Jul 2026 Direct
Rajeev K. Goel PUBM Class A Common Stock Conversion of derivative security 18% 8,500 55,801 02 Jul 2026 Direct
Rajeev K. Goel PUBM Class A Common Stock Sale -55.4% $805,407 $13.68 -58,854 47,301 02 Jul 2026 Direct
Rajeev K. Goel PUBM Class B Common Stock Conversion of derivative security -3.87% -8,500 210,984 02 Jul 2026 Direct
Rajeev K. Goel PUBM Class B Common Stock Options Exercise 4.03% 8,500 219,484 02 Jul 2026 Direct
Rajeev K. Goel PUBM Stock Option (Right to buy Class B Common Stock) Options Exercise -2.55% -8,500 324,324 02 Jul 2026 Direct
Amar K. Goel PUBM Class A Common Stock Sale -15.6% $89,862 $13.65 -6,584 35,580 02 Jul 2026 Direct
Andrew Woods PUBM Class A Common Stock Sale -6.61% $78,588 $13.65 -5,758 81,331 02 Jul 2026 Direct
Mukul Kumar PUBM Class A Common Stock Sale -6.53% $107,782 $13.65 -7,897 112,945 02 Jul 2026 Direct
Paulina Klimenko PUBM Class A Common Stock Sale -15.7% $203,554 $13.65 -14,914 80,053 02 Jul 2026 Direct
Steven Pantelick PUBM Class A Common Stock Options Exercise 106.9% 45,665 88,368 01 Jul 2026 Direct
Steven Pantelick PUBM Restricted Stock Unit Options Exercise -70.5% -45,665 19,092 01 Jul 2026 Direct
Rajeev K. Goel PUBM Class A Common Stock Options Exercise 97,655 97,655 01 Jul 2026 Direct
Rajeev K. Goel PUBM Class A Common Stock Sale -100% $238,990 $13.91 -17,176 0 01 Jul 2026 Direct
Rajeev K. Goel PUBM Class A Common Stock Conversion of derivative security 17,176 17,176 01 Jul 2026 Direct
Rajeev K. Goel PUBM Class B Common Stock Conversion of derivative security -7.53% -17,176 210,984 01 Jul 2026 Direct
Rajeev K. Goel PUBM Class B Common Stock Options Exercise 8.14% 17,176 228,160 01 Jul 2026 Direct
Rajeev K. Goel PUBM Stock Option (Right to Buy Class B Common Stock) Options Exercise -4.91% -17,176 332,824 01 Jul 2026 Direct
Rajeev K. Goel PUBM Restricted Stock Unit Options Exercise -67.9% -97,655 46,085 01 Jul 2026 Direct
Amar K. Goel PUBM Class A Common Stock Options Exercise 75.2% 18,098 42,164 01 Jul 2026 Direct
Amar K. Goel PUBM Restricted Stock Unit Options Exercise -81.7% -18,098 4,060 01 Jul 2026 Direct
Andrew Woods PUBM Class A Common Stock Options Exercise 22.2% 15,823 87,089 01 Jul 2026 Direct
Andrew Woods PUBM Restricted Stock Units Options Exercise -6.67% -4,327 60,577 01 Jul 2026 Direct
Andrew Woods PUBM Restricted Stock Unit Options Exercise -71.7% -10,245 4,039 01 Jul 2026 Direct
Mukul Kumar PUBM Class A Common Stock Options Exercise 19.8% 19,973 120,842 01 Jul 2026 Direct
Mukul Kumar PUBM Restricted Stock Unit Options Exercise -70% -19,973 8,559 01 Jul 2026 Direct
Paulina Klimenko PUBM Class A Common Stock Options Exercise 54.6% 33,531 94,967 01 Jul 2026 Direct
Paulina Klimenko PUBM Restricted Stock Unit Options Exercise -71.8% -33,531 13,167 01 Jul 2026 Direct
Rajeev K. Goel PUBM Class A Common Stock Sale -100% $486,568 $11.30 -43,077 0 18 Jun 2026 Direct
Rajeev K. Goel PUBM Class A Common Stock Conversion of derivative security 103.1% 21,871 43,077 18 Jun 2026 Direct
Rajeev K. Goel PUBM Class B Common Stock Conversion of derivative security -9.39% -21,871 210,984 18 Jun 2026 Direct
Rajeev K. Goel PUBM Class B Common Stock Options Exercise 10.4% 21,871 232,855 18 Jun 2026 Direct
* marks a reported price that did not pass the local price check.
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