AMPL insider transaction filings
Amplitude, Inc. — 50 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-09-14. Screen AMPL transaction legs live →
Insider transaction summary — last 90 days
2026-06-24 to 2026-09-22, from the filings listed below: 9 Form 4 filings. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 2 legs across 2 filings by 2 insiders — 485,000 shares, $6,173,361 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 10.
- Largest priced transaction: sale of 300,000 shares @ $12.99 ($3,897,750) by Crook Nathaniel Glenn, filed 2026-09-09.
By insider — same window
Open-market purchase/sale legs on non-derivative securities, grouped by the filing's reporting owner(s); joint filings appear once. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Insider | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|
| Crook Nathaniel Glenn — Chief Commercial Officer | 2 | — | 1 leg · 300,000 sh · $3,897,750 | 1 |
| Skates Spenser — CEO and President, Director, 10% owner | 2 | — | 1 leg · 185,000 sh · $2,275,611 | 3 |
| Liu Curtis — Chief Technology Officer, Director, 10% owner | 2 | — | — | 3 |
| Casey Andrew — Chief Financial Officer | 1 | — | — | 1 |
| Schultz Erica — Director | 1 | — | — | 1 |
| Tzuo Tien — Director | 1 | — | — | 1 |
Recent Form 4 filings — Amplitude, Inc.
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-14 | 4 | Skates Spenser — CEO and President, Director, 10% owner | Conversion (C): 185,000 @ $0 · Sale (S): 185,000 @ $12.30 · Conversion (C): 185,000 (derivative) @ $0 | EDGAR |
| 2026-09-09 | 4 | Crook Nathaniel Glenn — Chief Commercial Officer | Sale (S): 300,000 @ $12.99 | EDGAR |
| 2026-08-18 | 4 | Skates Spenser — CEO and President, Director, 10% owner | Tax withholding (F): 52,369 @ $13.03 | EDGAR |
| 2026-08-18 | 4 | Liu Curtis — Chief Technology Officer, Director, 10% owner | Tax withholding (F): 53,878 @ $13.03 | EDGAR |
| 2026-08-18 | 4 | Casey Andrew — Chief Financial Officer | Tax withholding (F): 72,814 @ $13.03 | EDGAR |
| 2026-08-18 | 4 | Crook Nathaniel Glenn — Chief Commercial Officer | Tax withholding (F): 109,368 @ $13.03 | EDGAR |
| 2026-07-10 | 4 | Liu Curtis — Chief Technology Officer, Director, 10% owner | Gift (G): 175,000 (derivative) @ $0 · Gift (G): 175,000 (derivative) @ $0 | EDGAR |
| 2026-07-07 | 4 | Tzuo Tien — Director | Grant/award (A): 1,521 @ $0 | EDGAR |
| 2026-07-07 | 4 | Schultz Erica — Director | Grant/award (A): 1,659 @ $0 | EDGAR |
| 2026-06-16 | 4/A | Liu Curtis — Chief Technology Officer, Director, 10% owner | Sale (S): 22,786 @ $8.03 | EDGAR |
| 2026-06-15 | 4 | Wong Catherine — Director | Sale (S): 7,453 @ $6.79 | EDGAR |
| 2026-06-11 | 4 | Wong Catherine — Director | Grant/award (A): 24,857 @ $0 | EDGAR |
| 2026-06-11 | 4 | Grady Patrick W — Director, 10% owner | Grant/award (A): 24,857 @ $0 | EDGAR |
| 2026-06-11 | 4 | Schultz Erica — Director | Grant/award (A): 24,857 @ $0 | EDGAR |
| 2026-06-11 | 4 | Gill Ronald S — Director | Grant/award (A): 24,857 @ $0 | EDGAR |
| 2026-06-11 | 4 | Whitehurst James M — Director | Grant/award (A): 24,857 @ $0 | EDGAR |
| 2026-06-03 | 4 | Liu Curtis — Chief Technology Officer, Director, 10% owner | Sale (S): 22,201 @ $8.03 | EDGAR |
| 2026-05-19 | 4 | Crook Nathaniel Glenn — Chief Commercial Officer | Tax withholding (F): 101,292 @ $6.06 | EDGAR |
| 2026-05-19 | 4 | Casey Andrew — Chief Financial Officer | Tax withholding (F): 64,872 @ $6.06 | EDGAR |
| 2026-05-19 | 4 | Liu Curtis — Chief Technology Officer, Director, 10% owner | Tax withholding (F): 40,279 @ $6.06 | EDGAR |
| 2026-05-19 | 4 | Skates Spenser — CEO and President, Director, 10% owner | Tax withholding (F): 39,562 @ $6.06 | EDGAR |
| 2026-05-06 | 4 | Liu Curtis — Chief Technology Officer, Director, 10% owner | Sale (S): 17,586 @ $8.12 | EDGAR |
| 2026-04-22 | 4 | Skates Spenser — CEO and President, Director, 10% owner | Grant/award (A): 1,323,119 @ $0 | EDGAR |
| 2026-04-17 | 4 | Crook Nathaniel Glenn — Chief Commercial Officer | Grant/award (A): 278,551 @ $0 · Grant/award (A): 974,930 @ $0 | EDGAR |
| 2026-04-17 | 4 | Casey Andrew — Chief Financial Officer | Grant/award (A): 431,754 @ $0 | EDGAR |
| 2026-04-17 | 4 | Liu Curtis — Chief Technology Officer, Director, 10% owner | Grant/award (A): 417,827 @ $0 | EDGAR |
| 2026-04-07 | 4 | Tzuo Tien — Director | Grant/award (A): 1,538 @ $0 | EDGAR |
| 2026-04-07 | 4 | Schultz Erica — Director | Grant/award (A): 1,678 @ $0 | EDGAR |
| 2026-03-10 | 4 | Liu Curtis — Chief Technology Officer, Director, 10% owner | Sale (S): 33,201 @ $8.01 | EDGAR |
| 2026-03-09 | 4 | Liu Curtis — Chief Technology Officer, Director, 10% owner | Sale (S): 30,061 @ $8.00 | EDGAR |
| 2026-02-17 | 4 | Casey Andrew — Chief Financial Officer | Tax withholding (F): 39,438 @ $6.34 | EDGAR |
| 2026-02-17 | 4 | Liu Curtis — Chief Technology Officer, Director, 10% owner | Tax withholding (F): 26,672 @ $6.34 | EDGAR |
| 2026-02-17 | 4 | HANSEN THOMAS NEERGAARD — President | Tax withholding (F): 69,142 @ $6.34 | EDGAR |
| 2026-01-07 | 4 | Tzuo Tien — Director | Grant/award (A): 999 @ $0 | EDGAR |
| 2025-12-30 | 4 | Skates Spenser — Chief Executive Officer, Director, 10% owner | Conversion (C): 100 @ $0 · Sale (S): 100 @ $12 · Conversion (C): 100 (derivative) @ $0 | EDGAR |
| 2025-12-29 | 4 | Skates Spenser — Chief Executive Officer, Director, 10% owner | Conversion (C): 42,743 @ $0 · Sale (S): 42,743 @ $12.01 · Conversion (C): 42,743 (derivative) @ $0 | EDGAR |
| 2025-12-17 | 4 | Schultz Erica — Director | Option exercise (M): 10,000 @ $4.19 · Sale (S): 10,000 @ $10.88 · Option exercise (M): 10,000 (derivative) @ $4.19 | EDGAR |
| 2025-11-19 | 4 | Schultz Erica — Director | Option exercise (M): 10,000 @ $4.19 · Sale (S): 10,000 @ $10.23 · Option exercise (M): 10,000 (derivative) @ $4.19 | EDGAR |
| 2025-11-18 | 4 | Casey Andrew — Chief Financial Officer | Tax withholding (F): 54,400 @ $10.73 | EDGAR |
| 2025-11-18 | 4 | Liu Curtis — Chief Technology Officer, Director, 10% owner | Tax withholding (F): 36,092 @ $10.73 | EDGAR |
| 2025-11-18 | 4 | HANSEN THOMAS NEERGAARD — President | Tax withholding (F): 91,618 @ $10.73 | EDGAR |
| 2025-11-13 | 4 | Skates Spenser — Chief Executive Officer, Director, 10% owner | Conversion (C): 400,000 @ $0 · Sale (S): 400,000 @ $10.99 · Conversion (C): 400,000 (derivative) @ $0 | EDGAR |
| 2025-11-12 | 4 | Casey Andrew — Chief Financial Officer | Purchase (P): 30,000 @ $9.99 | EDGAR |
| 2025-10-17 | 4 | Schultz Erica — Director | Option exercise (M): 10,000 @ $4.19 · Sale (S): 10,000 @ $10.12 · Option exercise (M): 10,000 (derivative) @ $0 | EDGAR |
| 2025-10-07 | 4 | Tzuo Tien — Director | Grant/award (A): 977 @ $0 | EDGAR |
| 2025-09-17 | 4 | Schultz Erica — Director | Option exercise (M): 10,000 @ $4.19 · Sale (S): 10,000 @ $11.06 · Option exercise (M): 10,000 (derivative) @ $0 | EDGAR |
| 2025-08-19 | 4 | Casey Andrew — Chief Financial Officer | Tax withholding (F): 54,399 @ $11.47 | EDGAR |
| 2025-08-19 | 4 | Liu Curtis — Chief Technology Officer, Director, 10% owner | Tax withholding (F): 34,301 @ $11.47 | EDGAR |
| 2025-08-19 | 4 | HANSEN THOMAS NEERGAARD — President | Tax withholding (F): 95,809 @ $11.47 | EDGAR |
| 2025-08-19 | 4 | Schultz Erica — Director | Option exercise (M): 7,500 @ $4.19 · Sale (S): 7,500 @ $11.46 · Option exercise (M): 7,500 (derivative) @ $4.19 | EDGAR |
Recent 8-K events — Amplitude, Inc.
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-08-05 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-06-10 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders | EDGAR |
| 2026-05-06 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-02-24 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-02-18 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-11-05 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-08-06 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-06-12 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 5.07 — Submission of Matters to a Vote of Security Holders | EDGAR |
| 2025-05-07 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-04-01 | 8-K | 1.01 — Entry into a Material Definitive Agreement | EDGAR |
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