Spenser Skates is CEO & President +1 at Amplitude, Inc. (AMPL). They have made 3 open-market trades across 1 company since 2021, most recently 2026-10-02.
CIK 0001882913
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 3 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| AMPL | 1,231,188 | $18.2M |
Shares reported on the most recent Form 4, priced at the 2026-08-18 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AMPL | SELL · 10b5-1 | 2026-10-02 | 2026-10-06 | $14.52 | $1.0M | -0.0% | — | — |
| AMPL | SELL · 10b5-1 | 2026-09-30 | 2026-10-02 | $14.45 | $71K | +5.2% | — | — |
| AMPL | SELL · 10b5-1 | 2026-09-10 | 2026-09-14 | $12.30 | $2.3M | +0.8% | +12.6% | — |
| AMPL | SELL · 10b5-1 | 2025-12-26 | 2025-12-30 | $12.00 | $1K | -7.2% | -20.1% | -41.9% |
| AMPL | SELL · 10b5-1 | 2025-12-24 | 2025-12-29 | $12.01 | $1.0M | -7.5% | -16.0% | -42.2% |
| AMPL | SELL · 10b5-1 | 2025-11-11 | 2025-11-13 | $10.99 | $4.4M | -3.2% | +1.8% | -36.5% |
| AMPL | SELL | 2021-10-01 | 2021-10-05 | $54.23 | $1.4M | +9.4% | +60.5% | +3.3% |
| AMPL | SELL | 2021-09-28 | 2021-09-30 | $50.09 | $28.8M | -7.4% | +44.3% | +0.6% |
| AMPL | SELL | 2021-09-10 | 2021-09-23 | $31.00 | $9.0M | +3.9% | +37.9% | +9.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.