PubMatic, Inc. (PUBM) Insider Trading
Over the last 3 months, PUBM insiders made 0 open-market buys and 26 sales, a net sale of -$10.0M (SEC Form 4). Over the last 6 months, 116 institutions increased and 94 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
26
Net (3m)
-$10.0M
Insider trades by month Buys Sells
Mar
Apr
May
Jun
Jul
Aug
Context3-month price +57.6%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 18, 2026 | Gimbel Lisaofficer: CHIEF ACCOUNTING OFFICER | Option | 1,395 | — |
| Aug 18, 2026 | Kumar Mukulofficer: PRESIDENT, ENGINEERING | Sell | 8,000 | $17.05 |
| Aug 18, 2026 | Gimbel Lisaofficer: CHIEF ACCOUNTING OFFICER | Option | 772 | — |
| Aug 18, 2026 | Kumar Mukulofficer: PRESIDENT, ENGINEERING | Option | 8,000 | $2.15 |
| Aug 18, 2026 | Gimbel Lisaofficer: CHIEF ACCOUNTING OFFICER | Sell | 1,396 | $17.04 |
| Aug 18, 2026 | Gimbel Lisaofficer: CHIEF ACCOUNTING OFFICER | Option | 801 | — |
| Aug 18, 2026 | Gimbel Lisaofficer: CHIEF ACCOUNTING OFFICER | Option | 794 | — |
| Aug 14, 2026 | Pantelick Stevenofficer: CHIEF FINANCIAL OFFICER | Sell | 22,203 | $17.25 |
| Aug 14, 2026 | Gimbel Lisaofficer: CHIEF ACCOUNTING OFFICER | Sell | 500 | $17.50 |
| Aug 14, 2026 | Pantelick Stevenofficer: CHIEF FINANCIAL OFFICER | Sell | 19,716 | $17.31 |
| Aug 10, 2026 | Woods Andrewofficer: GENERAL COUNSEL & SECRETARY | Sell | 38,331 | $17.96 |
| Aug 7, 2026 | Goel Rajeev K.director, 10 percent owner, officer: CHIEF EXECUTIVE OFFICER | Option | 211,302 | $3.89 |
| Aug 7, 2026 | Goel Rajeev K.director, 10 percent owner, officer: CHIEF EXECUTIVE OFFICER | Sell | 211,302 | $17.74 |
| Jul 27, 2026 | Goel Rajeev K.director, 10 percent owner, officer: CHIEF EXECUTIVE OFFICER | Sell | 49,979 | $12.35 |
| Jul 27, 2026 | Goel Rajeev K.director, 10 percent owner, officer: CHIEF EXECUTIVE OFFICER | Option | 21,870 | $2.15 |
| Jul 17, 2026 | Goel Rajeev K.director, 10 percent owner, officer: CHIEF EXECUTIVE OFFICER | Option | 4,060 | $3.89 |
| Jul 17, 2026 | Goel Rajeev K.director, 10 percent owner, officer: CHIEF EXECUTIVE OFFICER | Option | 8,962 | $3.89 |
| Jul 17, 2026 | Woods Andrewofficer: GENERAL COUNSEL & SECRETARY | Sell | 3,239 | $14.01 |
| Jul 17, 2026 | Kumar Mukulofficer: PRESIDENT, ENGINEERING | Sell | 8,000 | $13.67 |
| Jul 17, 2026 | Goel Rajeev K.director, 10 percent owner, officer: CHIEF EXECUTIVE OFFICER | Sell | 8,962 | $13.94 |
| Jul 17, 2026 | Kumar Mukulofficer: PRESIDENT, ENGINEERING | Option | 8,000 | $2.15 |
| Jul 17, 2026 | Goel Rajeev K.director, 10 percent owner, officer: CHIEF EXECUTIVE OFFICER | Sell | 4,060 | $13.90 |
| Jul 6, 2026 | Goel Amar K.director, 10 percent owner, officer: CHAIRMAN, CHIEF INNOVATION OFF | Sell | 6,584 | $13.65 |
| Jul 6, 2026 | Kumar Mukulofficer: PRESIDENT, ENGINEERING | Option | 8,360 | — |
| Jul 6, 2026 | Goel Amar K.director, 10 percent owner, officer: CHAIRMAN, CHIEF INNOVATION OFF | Option | 8,654 | — |
| Jul 6, 2026 | Woods Andrewofficer: GENERAL COUNSEL & SECRETARY | Option | 3,397 | — |
| Jul 6, 2026 | Pantelick Stevenofficer: CHIEF FINANCIAL OFFICER | Sell | 23,548 | $13.65 |
| Jul 6, 2026 | Klimenko Paulinaofficer: CHIEF GROWTH OFFICER | Option | 6,485 | — |
| Jul 6, 2026 | Pantelick Stevenofficer: CHIEF FINANCIAL OFFICER | Sell | 12,548 | $13.42 |
| Jul 6, 2026 | Woods Andrewofficer: GENERAL COUNSEL & SECRETARY | Option | 2,809 | — |
Source: PUBM SEC Form 4 filings, latest Aug 18, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their PUBM positions over the last 6 months (SEC Form 13F).
Increased
116
New positions
55
Reduced
94
Sold out
19
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| GRAHAM HOLDINGS CO | Increased | 3.4M | May 15, 2026 |
| Graham Holdings Co | Unchanged | 3.4M | Aug 14, 2026 |
| BlackRock, Inc. | Increased | 3.3M | Aug 7, 2026 |
| BLACKROCK, INC. | Reduced | 3.1M | May 13, 2026 |
| CENTERBOOK PARTNERS LP | Increased | 1.7M | May 5, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 1.7M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 1.6M | May 15, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 1.6M | May 13, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | 1.6M | Aug 13, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 1.5M | May 14, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Increased | 1.5M | Aug 11, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 1.4M | Aug 13, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 1.2M | May 7, 2026 |
| Walleye Trading LLC | Increased | 1.2M | Aug 3, 2026 |
| Whitefort Capital Management, LP | Increased | 1.1M | Aug 14, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.