AMPL Amplitude, Inc.
Amplitude, Inc. (AMPL) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
How much of that selling was preplanned? 100% planned / 0% discretionary
Largest single sale: $4.4M.
Where they traded
Last open-market purchase: November 7, 2025 , by Casey Andrew .
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Crook Nathaniel Glenn | Chief Commercial Officer | Sell 10b5-1 | 300,000 | $12.99 | $3.9M | 1,622,696 −15.6% of holding | |
| Wong Catherine | Director | Sell 10b5-1 | 7,453 | $6.79 | $50.6K | 111,462 −6.3% of holding | |
| Liu Curtis 2 fills | Chief Technology Officer | Sell 10b5-1 | 44,987 | $8.03 | $361.1K | 1,004,779 −4.3% of holding | |
| Liu Curtis | Chief Technology Officer | Sell 10b5-1 | 17,586 | $8.12 | $142.9K | 1,067,259 −1.6% of holding | |
| Liu Curtis | Chief Technology Officer | Sell 10b5-1 | 33,201 | $8.01 | $265.8K | 603,756 −5.2% of holding | |
| Liu Curtis | Chief Technology Officer | Sell 10b5-1 | 30,061 | $8.00 | $240.5K | 636,957 −4.5% of holding | |
| Skates Spenser | Chief Executive Officer | Sell 10b5-1 | 100 | $12.00 | $1.2K | None left | |
| Skates Spenser | Chief Executive Officer | Sell 10b5-1 | 42,743 | $12.01 | $513.4K | None left | |
| Schultz Erica | Director | Sell 10b5-1 | 10,000 | $10.88 | $108.8K | 114,906 −8% of holding | |
| Schultz Erica | Director | Sell 10b5-1 | 10,000 | $10.23 | $102.3K | 107,406 −8.5% of holding | |
| Skates Spenser | Chief Executive Officer | Sell 10b5-1 | 400,000 | $10.99 | $4.4M | None left | |
| Casey Andrew | Chief Financial Officer | Buy | 30,000 | $9.99 | $299.8K | 1,160,608 | |
| Schultz Erica | Director | Sell 10b5-1 | 10,000 | $10.12 | $101.2K | 107,406 −8.5% of holding | |
| Schultz Erica | Director | Sell 10b5-1 | 10,000 | $11.06 | $110.6K | 107,406 −8.5% of holding |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.