AMPL: Amplitude, Inc. insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 3 sales totaling $1.09M in the last 180 days.
Insider sales
| Trade date | Insider | Role | Value | 10b5-1 plan |
|---|---|---|---|---|
| 2026-10-02 | Skates Spenser | CEO | $1.02M | yes |
| 2026-10-01 | Skates Spenser | CEO | $51K | yes |
| 2026-09-30 | Skates Spenser | CEO | $20K | yes |
Activist and 5% holders
| Filed | What | Holder | Stake | Change | Filing |
|---|---|---|---|---|---|
| 2026-08-06 | New 13G stake | FMR LLC | 5.80% | SEC | |
| 2026-07-27 | 13G amendment | BlackRock, Inc. | 7.60% | SEC |
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