Comparable stake leader
Graham Holdings Co
SEC ownership of PubMatic, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001422930.
Disclosed value leader
VANGUARD GROUP INC
Comparable rows
50/50
Latest evidence
29 May 2026
- 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
- 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 CIK
- 0001422930
- Issuer location
- Redwood City, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
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
|
8.9%
|
$27,803,035
3,398,904 shares
|
+$4,641,676 | 31 Mar 2026 |
| BlackRock, Inc. |
13F
13D/G
Company
|
7.1%
from 13D/G
|
$25,071,995
3,065,036 shares
|
— | 31 Mar 2026 |
| VANGUARD GROUP INC |
13D/G
The Vanguard Group
|
6.5%
|
$32,483,067
2,611,179 shares
|
-$9,982,155 | 30 Jun 2025 |
| Shelagh Glaser |
3/4/5
Director
|
0.06%
|
$305,125
21,502 shares
mixed-class rows
|
— | 29 May 2026 |
| Yakov (jacob) Shulman |
3/4/5
Director
|
0.05%
|
$276,773
18,036 shares
mixed-class rows
|
— | 29 May 2026 |
| CenterBook Partners LP |
13F
Company
|
4.6%
|
$14,250,378
1,742,100 shares
|
— | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
4.2%
|
$13,200,630
1,613,769 shares
|
— | 31 Mar 2026 |
| ACADIAN ASSET MANAGEMENT LLC |
13F
Company
|
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: -$14,003,576.
Buys
$0
Insiders: 0
Sells
$14,003,576
Insiders: 7
Net
-$14,003,576
Shares: -1,524,030
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 1,524,030
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 400,828 | $0 | $3,843,031 | -$3,843,031 |
| 3-6 | 0 | 381,820 | $0 | $3,044,592 | -$3,044,592 |
| 6-9 | 0 | 378,321 | $0 | $3,205,320 | -$3,205,320 |
| 9-12 | 0 | 363,061 | $0 | $3,910,634 | -$3,910,634 |
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
-$14,003,575
Latest report
18 Jun 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 | $37,206,198 | -$388,145 | -1% | Mixed | 01 Apr 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 | $11,737,645 | -$11,173,570 | -49% | Mixed | 18 Jun 2026 |
| DRAPER ASSOCIATES L P | 10%+ Owner | $10,973,724 | Mixed | 28 May 2021 | ||
| Steven Pantelick | Chief Financial Officer | $8,644,568 | -$1,229,609 | -12% | Mixed | 06 Apr 2026 |
| W. Eric Carlborg | Director | $4,308,494 | Mixed | 31 May 2023 | ||
| Mukul Kumar | President, Engineering | $3,882,475 | -$319,832 | -7.6% | Mixed | 02 Jun 2026 |
| Paulina Klimenko | Chief Growth Officer | $2,517,871 | -$663,062 | -21% | Mixed | 06 Apr 2026 |
| CNH Capital Co Ltd | 10%+ Owner | $2,354,090 | Mixed | 19 Mar 2021 | ||
| Andrew Woods | General Counsel & Secretary | $1,618,276 | -$174,031 | -9.7% | Mixed | 01 Apr 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 | -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 | ||
| Rajeev K. Goel | PUBM | Stock Option (Right to buy Class B Common Stock) | Options Exercise | -6.83% | -21,871 | 298,125 | 18 Jun 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Class A Common Stock | Sale | -67.5% | $498,656 | $11.33 | -44,000 | 21,206 | 08 Jun 2026 | Direct |
| Rajeev K. Goel | PUBM | Class A Common Stock | Conversion of derivative security | 207.5% | 44,000 | 65,206 | 08 Jun 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Class B Common Stock | Conversion of derivative security | -17.3% | -44,000 | 210,984 | 08 Jun 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Class B Common Stock | Options Exercise | 20.8% | 44,000 | 254,984 | 08 Jun 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Stock Option (Right to buy Class B Common Stock) | Options Exercise | -12.1% | -44,000 | 319,996 | 08 Jun 2026 | Direct | ||
| Mukul Kumar | PUBM | Class A Common Stock | Sale | -7.35% | $95,700 | $11.96 | -8,000 | 100,869 | 02 Jun 2026 | Direct |
| Mukul Kumar | PUBM | Class A Common Stock | Conversion of derivative security | 7.93% | 8,000 | 108,869 | 02 Jun 2026 | Direct | ||
| Mukul Kumar | PUBM | Class B Common Stock | Conversion of derivative security | -5.57% | -8,000 | 135,600 | 02 Jun 2026 | Direct | ||
| Mukul Kumar | PUBM | Class B Common Stock | Options Exercise | 5.9% | 8,000 | 143,600 | 02 Jun 2026 | Direct | ||
| Mukul Kumar | PUBM | Stock Option (Right to buy Class B Common Stock) | Options Exercise | -17% | -8,000 | 39,000 | 02 Jun 2026 | Direct | ||
| Shelagh Glaser | PUBM | Class A Common Stock | Options Exercise | 166.6% | 13,437 | 21,502 | 31 May 2026 | Direct | ||
| Shelagh Glaser | PUBM | Restricted Stock Units | Options Exercise | -100% | -13,437 | 0 | 31 May 2026 | Direct | ||
| Yakov (jacob) Shulman | PUBM | Class A Common Stock | Options Exercise | 123.6% | 9,971 | 18,036 | 31 May 2026 | Direct | ||
| Yakov (jacob) Shulman | PUBM | Restricted Stock Units | Options Exercise | -100% | -9,971 | 0 | 31 May 2026 | Direct | ||
| Shelagh Glaser | PUBM | Restricted Stock Units | Award | 15,839 | 15,839 | 29 May 2026 | Direct | |||
| Yakov (jacob) Shulman | PUBM | Restricted Stock Units | Award | 15,839 | 15,839 | 29 May 2026 | Direct | |||
| Anton Hanebrink | PUBM | Restricted Stock Units | Award | 15,839 | 15,839 | 29 May 2026 | Direct | |||
| Susan Daimler | PUBM | Restricted Stock Units | Award | 15,839 | 15,839 | 29 May 2026 | Direct | |||
| Nikhil Ramesh Mehta | PUBM | Restricted Stock Units | Award | 15,839 | 15,839 | 29 May 2026 | Direct | |||
| Ramon Jones | PUBM | Restricted Stock Units | Award | 15,839 | 15,839 | 29 May 2026 | Direct | |||
| Rajeev K. Goel | PUBM | Class A Common Stock | Sale | -67.5% | $458,207 | $10.41 | -44,000 | 21,206 | 26 May 2026 | Direct |
| Rajeev K. Goel | PUBM | Class A Common Stock | Conversion of derivative security | 207.5% | 44,000 | 65,206 | 26 May 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Class B Common Stock | Conversion of derivative security | -17.3% | -44,000 | 210,984 | 26 May 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Class B Common Stock | Options Exercise | 20.8% | 44,000 | 254,984 | 26 May 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Stock Option (Right to buy Class B Common Stock) | Options Exercise | -100% | -44,000 | 0 | 26 May 2026 | Direct | ||
| Lisa Gimbel | PUBM | Class A Common Stock | Sale | -17.3% | $28,319 | $9.89 | -2,863 | 13,677 | 18 May 2026 | Direct |
| Lisa Gimbel | PUBM | Class A Common Stock | Options Exercise | 29.5% | 3,765 | 16,540 | 15 May 2026 | Direct | ||
| Lisa Gimbel | PUBM | Restricted Stock Units | Options Exercise | -41% | -3,765 | 5,408 | 15 May 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Class A Common Stock | Sale | -67.5% | $420,270 | $9.55 | -44,000 | 21,206 | 14 May 2026 | Direct |
| Rajeev K. Goel | PUBM | Class A Common Stock | Conversion of derivative security | 207.5% | 44,000 | 65,206 | 14 May 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Class B Common Stock | Conversion of derivative security | -17.3% | -44,000 | 210,984 | 14 May 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Class B Common Stock | Options Exercise | 20.8% | 44,000 | 254,984 | 14 May 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Stock Option (Right to buy Class B Common Stock) | Options Exercise | -84.6% | -44,000 | 7,996 | 14 May 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Class A Common Stock | Sale | -67.5% | $430,144 | $9.78 | -44,000 | 21,206 | 27 Apr 2026 | Direct |
| Rajeev K. Goel | PUBM | Class A Common Stock | Conversion of derivative security | 207.5% | 44,000 | 65,206 | 27 Apr 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Class B Common Stock | Conversion of derivative security | -17.3% | -44,000 | 210,984 | 27 Apr 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Class B Common Stock | Options Exercise | 20.8% | 44,000 | 254,984 | 27 Apr 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Stock Option (Right to buy Class B Common Stock) | Options Exercise | -45.8% | -44,000 | 51,996 | 27 Apr 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Class A Common Stock | Sale | -67.5% | $380,503 | $8.65 | -44,000 | 21,206 | 13 Apr 2026 | Direct |
| Rajeev K. Goel | PUBM | Class A Common Stock | Conversion of derivative security | 36.6% | 17,466 | 65,206 | 13 Apr 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Class B Common Stock | Conversion of derivative security | -7.65% | -17,466 | 210,984 | 13 Apr 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Class B Common Stock | Options Exercise | 8.28% | 17,466 | 228,450 | 13 Apr 2026 | Direct | ||
| Rajeev K. Goel | PUBM | Stock Option (Right to buy Class B Common Stock) | Options Exercise | -15.4% | -17,466 | 95,996 | 13 Apr 2026 | Direct | ||
| Andrew Woods | PUBM | Restricted Stock Unit | Options Exercise | -8.33% | -2,810 | 30,904 | 08 Apr 2026 | Direct | ||
| Paulina Klimenko | PUBM | Class A Common Stock | Sale | -16.1% | $99,492 | $8.44 | -11,784 | 61,436 | 06 Apr 2026 | Direct |
* marks a reported price that did not pass the local price check.