12 insiders reported 85 Form 4 transactions for Amplitude, Inc. (AMPL) over the past 18 months (most recent 2026-09-14). Recent activity: Skates Spenser (CEO and President) Buy 185,000 shares, Skates Spenser (CEO and President) Sell 185,000 shares, Crook Nathaniel Glenn (Chief Commercial Officer) Sell 300,000 shares, Skates Spenser (CEO and President) Sell 52,369 shares, Liu Curtis (Chief Technology Officer) Sell 53,878 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-14 | Skates Spenser | CEO and President | Buy | 185,000 | $0 |
| 2026-09-14 | Skates Spenser | CEO and President | Sell | 185,000 | $2.3M |
| 2026-09-09 | Crook Nathaniel Glenn | Chief Commercial Officer | Sell | 300,000 | $3.9M |
| 2026-08-18 | Skates Spenser | CEO and President | Sell | 52,369 | $682,368 |
| 2026-08-18 | Liu Curtis | Chief Technology Officer | Sell | 53,878 | $702,030 |
| 2026-08-18 | Casey Andrew | Chief Financial Officer | Sell | 72,814 | $948,766 |
| 2026-08-18 | Crook Nathaniel Glenn | Chief Commercial Officer | Sell | 109,368 | $1.4M |
| 2026-07-07 | Schultz Erica | Director | Buy | 1,659 | $0 |
| 2026-07-07 | Tzuo Tien | Director | Buy | 1,521 | $0 |
| 2026-06-16 | Liu Curtis | Chief Technology Officer | Sell | 22,786 | $182,972 |
| 2026-06-15 | Wong Catherine | Director | Sell | 7,453 | $50,606 |
| 2026-06-11 | Wong Catherine | Director | Buy | 24,857 | $0 |
| 2026-06-11 | Grady Patrick W | Director | Buy | 24,857 | $0 |
| 2026-06-11 | Gill Ronald S | Director | Buy | 24,857 | $0 |
| 2026-06-11 | Whitehurst James M | Director | Buy | 24,857 | $0 |
| 2026-06-11 | Schultz Erica | Director | Buy | 24,857 | $0 |
| 2026-06-03 | Liu Curtis | Chief Technology Officer | Sell | 22,201 | $178,274 |
| 2026-05-19 | Casey Andrew | Chief Financial Officer | Sell | 64,872 | $393,124 |
| 2026-05-19 | Liu Curtis | Chief Technology Officer | Sell | 40,279 | $244,091 |
| 2026-05-19 | Skates Spenser | CEO and President | Sell | 39,562 | $239,746 |
| 2026-05-19 | Crook Nathaniel Glenn | Chief Commercial Officer | Sell | 101,292 | $613,830 |
| 2026-05-06 | Liu Curtis | Chief Technology Officer | Sell | 17,586 | $142,798 |
| 2026-04-22 | Skates Spenser | CEO and President | Buy | 1.3M | $0 |
| 2026-04-17 | Liu Curtis | Chief Technology Officer | Buy | 417,827 | $0 |
| 2026-04-17 | Crook Nathaniel Glenn | Chief Commercial Officer | Buy | 278,551 | $0 |
Source: SEC Form 4 filings · as of 2026-09-14