Spenser Skates - 17 Aug 2026 Form 4 Insider Report for Amplitude, Inc. (AMPL)

Reporting relationship: CEO and President, Director, 10%+ Owner
Issuer ticker: AMPL
Reported as of: 17 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 18 Aug 2026, 17:18:20 UTC
Prior SEC filing: 19 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Elizabeth Fisher, as attorney in fact for Spenser Skates

Key filing fact

Spenser Skates filed Form 4 for Amplitude, Inc. (AMPL) on 18 Aug 2026.

Key facts

This page summarizes Spenser Skates's Form 4 filing for Amplitude, Inc. (AMPL).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 18 Aug 2026, 17:18.

Change

Previous filing in this sequence was filed on 19 May 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001882913 Primary reporting owner

Skates Spenser

Relationship: CEO and President, Director, 10%+ Owner
Address: C/O AMPLITUDE, INC., SAN FRANCISCO
Signature: /s/ Elizabeth Fisher, as attorney in fact for Spenser Skates
Signature date: 18 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

AMPL transaction

Class A Common Stock

Tax liability

Transaction value
Shares: -52,369
Change %: -4.1%
Price: $13.03^*
Shares after: 1,231,188
Date: 17 Aug 2026
Ownership: Direct
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote 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.

Footnote F2

Includes 1,102,599 RSUs.