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

Graham Holdings Co

Comparable rows

50/50

Latest evidence

30 Jun 2026

Top shareholders Insider holders Latest transactions
Public ticker
PUBM on Nasdaq
Parsed ownership sources
13F, 13D/G, 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
30 Jun 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
Graham Holdings Co
Comparable rows
50/50
Latest evidence
30 Jun 2026
13F 13D/G 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
13F 13D/G
Company · Graham Holdings Company
13F 13D/G
8.9%
from 13D/G
$44,594,000
3,398,904 shares
 — 30 Jun 2026
BlackRock, Inc.
13F 13D/G
Company
13F 13D/G
7.1%
from 13D/G
$43,027,436
3,279,530 shares
 — 30 Jun 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
VANGUARD CAPITAL MANAGEMENT LLC
13F
Company
13F
4.4%
$21,796,413
1,661,312 shares
 — 30 Jun 2026
ACADIAN ASSET MANAGEMENT LLC
13F
Company
13F
4.1%
$20,641,000
1,573,911 shares
 — 30 Jun 2026
DIMENSIONAL FUND ADVISORS LP
13F
Company
13F
3.9%
$19,563,256
1,491,121 shares
 — 30 Jun 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: -$19,706,253.

Buys
$0
Insiders: 0
Sells
$19,706,253
Insiders: 7
Net
-$19,706,253
Shares: -1,787,425
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 0 Shares: 1,787,425
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 0 668,137 $0 $10,212,878 -$10,212,878
3-6 0 403,147 $0 $3,621,595 -$3,621,595
6-9 0 387,393 $0 $3,141,656 -$3,141,656
9-12 0 328,748 $0 $2,730,124 -$2,730,124

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
-$19,706,253
Latest report
01 Sep 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 -$354,744 -0.94% 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 $12,002,882 -$14,822,347 -55% Mixed 20 Aug 2026
DRAPER ASSOCIATES L P 10%+ Owner $10,973,724 Mixed 28 May 2021
Steven Pantelick Chief Financial Officer $8,474,881 -$2,015,831 -19% Mixed 12 Aug 2026
Mukul Kumar President, Engineering $4,601,564 -$605,945 -12% Mixed 17 Aug 2026
W. Eric Carlborg Director $4,308,494 Mixed 31 May 2023
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 $1,761,193 -$935,087 -35% Mixed 07 Aug 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
Lisa Gimbel Chief Accounting Officer $467,190 -$87,149 -16% Mixed 01 Sep 2026
Susan Daimler Director $348,374 Mixed 29 May 2026
Anton Hanebrink Director $339,671 Mixed 29 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
Lisa Gimbel PUBM Class A Common Stock Sale -2.95% $8,215 $16.43 -500 16,427 01 Sep 2026 Direct
Rajeev K. Goel PUBM Class A Common Stock Sale -75.7% $824,260 $16.49 -49,980 16,083 20 Aug 2026 Direct
Rajeev K. Goel PUBM Class A Common Stock Conversion of derivative security 108.4% 34,371 66,063 20 Aug 2026 Direct
Rajeev K. Goel PUBM Class B Common Stock Conversion of derivative security -15.6% -34,371 185,984 20 Aug 2026 Direct
Rajeev K. Goel PUBM Class B Common Stock Options Exercise 11% 21,871 220,355 20 Aug 2026 Direct
Rajeev K. Goel PUBM Stock Option (Right to buy Class B Common Stock) Options Exercise -18.7% -21,871 94,958 20 Aug 2026 Direct
Mukul Kumar PUBM Class A Common Stock Sale -6.61% $136,402 $17.05 -8,000 112,945 17 Aug 2026 Direct
Mukul Kumar PUBM Class A Common Stock Conversion of derivative security 7.08% 8,000 120,945 17 Aug 2026 Direct
Mukul Kumar PUBM Class B Common Stock Conversion of derivative security -5.57% -8,000 135,600 17 Aug 2026 Direct
Mukul Kumar PUBM Class B Common Stock Options Exercise 5.9% 8,000 143,600 17 Aug 2026 Direct
Mukul Kumar PUBM Stock Option (Right to buy Class B Common Stock) Options Exercise -25.8% -8,000 23,000 17 Aug 2026 Direct
Lisa Gimbel PUBM Class A Common Stock Options Exercise 25.8% 3,762 18,323 15 Aug 2026 Direct
Lisa Gimbel PUBM Restricted Stock Units Options Exercise -44.8% -3,762 4,636 15 Aug 2026 Direct
Steven Pantelick PUBM Class A Common Stock Sale -65.6% $341,205 $17.31 -19,716 10,353 13 Aug 2026 Direct
Lisa Gimbel PUBM Class A Common Stock Sale -3.32% $8,750 $17.50 -500 14,561 12 Aug 2026 Direct
Steven Pantelick PUBM Class A Common Stock Sale -42.5% $383,064 $17.25 -22,203 30,069 12 Aug 2026 Direct
Andrew Woods PUBM Class A Common Stock Sale -49.1% $688,402 $17.96 -38,331 39,761 10 Aug 2026 Direct
Rajeev K. Goel PUBM Class A Common Stock Sale -87% $3,749,427 $17.74 -211,302 31,692 07 Aug 2026 Direct
Rajeev K. Goel PUBM Class A Common Stock Conversion of derivative security 666.7% 211,302 242,994 07 Aug 2026 Direct
Rajeev K. Goel PUBM Class B Common Stock Conversion of derivative security -51.6% -211,302 198,484 07 Aug 2026 Direct
Rajeev K. Goel PUBM Class B Common Stock Options Exercise 106.5% 211,302 409,786 07 Aug 2026 Direct
Rajeev K. Goel PUBM Stock Option (Right to buy Class B Common Stock) Options Exercise -67.9% -211,302 100,000 07 Aug 2026 Direct
Rajeev K. Goel PUBM Class A Common Stock Sale -61.2% $617,006 $12.35 -49,979 31,692 23 Jul 2026 Direct
Rajeev K. Goel PUBM Class A Common Stock Conversion of derivative security 72.7% 34,370 81,671 23 Jul 2026 Direct
Rajeev K. Goel PUBM Class B Common Stock Conversion of derivative security -14.8% -34,370 198,484 23 Jul 2026 Direct
Rajeev K. Goel PUBM Class B Common Stock Options Exercise 10.4% 21,870 232,854 23 Jul 2026 Direct
Rajeev K. Goel PUBM Stock Option (Right to buy Class B Common Stock) Options Exercise -15.8% -21,870 116,829 23 Jul 2026 Direct
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
* marks a reported price that did not pass the local price check.
We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. Manage preferences to update or revoke optional consent for future visits. For more information, see our Privacy Policy .