AMPL · Insider Trading
Amplitude, Inc. Class A Common Stock
Every open-market purchase and sale reported by AMPL officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-10-15 | Vijaye Ganesh Raji | Director | A | +37,851 | — |
| 2026-10-07 | Erica Schultz | Director | A | +892 | — |
| 2026-10-07 | Tien Tzuo | Director | A | +818 | — |
| 2026-10-06 | Spenser Skates | CEO and President | MIXED | — | −$1.02M |
| 2026-10-02 | Spenser Skates | CEO and President | MIXED | — | −$71.00K |
| 2026-09-14 | Spenser Skates | CEO and President | MIXED | — | −$2.28M |
| 2026-09-09 | Nathaniel Glenn Crook | Chief Commercial Officer | Sell | −300,000 | −$3.90M |
| 2026-08-18 | Spenser Skates | CEO and President | F | −52,369 | −$682.37K |
| 2026-08-18 | Nathaniel Glenn Crook | Chief Commercial Officer | F | −109,368 | −$1.43M |
| 2026-08-18 | Andrew Casey | Chief Financial Officer | F | −72,814 | −$948.77K |
| 2026-08-18 | Curtis Liu | Chief Technology Officer | F | −53,878 | −$702.03K |
| 2026-07-10 | Curtis Liu | Chief Technology Officer | G | — | — |
| 2026-07-07 | Erica Schultz | Director | A | +1,659 | — |
| 2026-07-07 | Tien Tzuo | Director | A | +1,521 | — |
| 2026-06-16 | Curtis Liu | Chief Technology Officer | Sell | −22,786 | −$182.88K |
| 2026-06-15 | Catherine Wong | Director | Sell | −7,453 | −$50.58K |
| 2026-06-11 | James M Whitehurst | Director | A | +24,857 | — |
| 2026-06-11 | Ronald S Gill | Director | A | +24,857 | — |
| 2026-06-11 | Erica Schultz | Director | A | +24,857 | — |
| 2026-06-11 | Patrick W Grady | Director | A | +24,857 | — |
| 2026-06-11 | Catherine Wong | Director | A | +24,857 | — |
| 2026-06-03 | Curtis Liu | Chief Technology Officer | Sell | −22,201 | −$178.18K |
| 2026-05-19 | Curtis Liu | Chief Technology Officer | F | −40,279 | −$244.09K |
| 2026-05-19 | Spenser Skates | CEO and President | F | −39,562 | −$239.75K |
| 2026-05-19 | Andrew Casey | Chief Financial Officer | F | −64,872 | −$393.12K |
| 2026-05-19 | Nathaniel Glenn Crook | Chief Commercial Officer | F | −101,292 | −$613.83K |
| 2026-05-06 | Curtis Liu | Chief Technology Officer | Sell | −17,586 | −$142.88K |
| 2026-04-22 | Spenser Skates | CEO and President | A | +1,323,119 | — |
| 2026-04-17 | Andrew Casey | Chief Financial Officer | A | +431,754 | — |
| 2026-04-17 | Curtis Liu | Chief Technology Officer | A | +417,827 | — |
| 2026-04-17 | Nathaniel Glenn Crook | Chief Commercial Officer | A | +1,253,481 | — |
| 2026-04-07 | Tien Tzuo | Director | A | +1,538 | — |
| 2026-04-07 | Erica Schultz | Director | A | +1,678 | — |
| 2026-03-10 | Curtis Liu | Chief Technology Officer | Sell | −33,201 | −$265.84K |
| 2026-03-09 | Curtis Liu | Chief Technology Officer | Sell | −30,061 | −$240.54K |
| 2026-02-17 | Curtis Liu | Chief Technology Officer | F | −26,672 | −$169.10K |
| 2026-02-17 | Thomas Neergaard Hansen | President | F | −69,142 | −$438.36K |
| 2026-02-17 | Andrew Casey | Chief Financial Officer | F | −39,438 | −$250.04K |
| 2026-01-07 | Tien Tzuo | Director | A | +999 | — |
| 2025-12-30 | Spenser Skates | Chief Executive Officer | MIXED | — | −$1.20K |
| 2025-12-29 | Spenser Skates | Chief Executive Officer | MIXED | — | −$513.43K |
| 2025-12-17 | Erica Schultz | Director | MIXED | — | −$66.86K |
| 2025-11-19 | Erica Schultz | Director | MIXED | — | −$60.39K |
| 2025-11-18 | Curtis Liu | Chief Technology Officer | F | −36,092 | −$387.27K |
| 2025-11-18 | Thomas Neergaard Hansen | President | F | −91,618 | −$983.06K |
| 2025-11-18 | Andrew Casey | Chief Financial Officer | F | −54,400 | −$583.71K |
| 2025-11-13 | Spenser Skates | Chief Executive Officer | MIXED | — | −$4.40M |
| 2025-11-12 | Andrew Casey | Chief Financial Officer | Buy | +30,000 | +$299.79K |
| 2025-10-17 | Erica Schultz | Director | MIXED | — | −$59.33K |
| 2025-10-07 | Tien Tzuo | Director | A | +977 | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Curtis Liu | Chief Technology Officer | 8,332,524 | $140.19M |
| Thomas Neergaard Hansen | President | 1,845,845 | $31.06M |
| Nathaniel Glenn Crook | Chief Commercial Officer | 1,622,696 | $27.30M |
| Andrew Casey | Chief Financial Officer | 1,363,338 | $22.94M |
| Spenser Skates | CEO and President | 1,231,188 | $20.71M |
| Eric Vishria | Director | 394,333 | $6.63M |
| James M Whitehurst | Director | 187,201 | $3.15M |
| Patrick W Grady | Director | 181,691 | $3.06M |
| Erica Schultz | Director | 143,992 | $2.42M |
| Catherine Wong | Director | 111,462 | $1.88M |
| Tien Tzuo | Director | 102,419 | $1.72M |
| Ronald S Gill | Director | 99,535 | $1.67M |
| Vijaye Ganesh Raji | Director | 37,851 | $636.82K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the AMPL quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.