InsiderTrades

Form 4 for AMPL Amplitude, Inc.

Accepted 2026-08-18 17:14:54 ET · period of report 2026-08-17 · accession 0001866692-26-000010 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
2026-08-18 17:14 2026-08-17 AMPL Casey Andrew CFO F - Tax $13.03 -72.8K 1.36M -5% -$948.8K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Class A Common Stock 2026-08-17 F D 72,814 $13.03 1,363,338 D — — (F1) Represents shares of the Issuer's Class A Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of the Issuer's Class A Common Stock delivered to the reporting person on August 15, 2026, from the vesting of restricted stock units ("RSUs"), and does not represent a sale by the Reporting Person. (F2) Includes 814,949 RSUs.