Ninos Sarkis - Sep 28, 2021 Form 4 Insider Report for Amplitude, Inc. (AMPL)

Role: Chief Accounting Officer
Signature: /s/ Hoang Vuong, as Attorney-in-Fact for Ninos Sarkis
Stock symbol: AMPL
Transactions as of: Sep 28, 2021
Transactions value $: -$824,580
Form type: 4
Date filed: 9/30/2021, 07:18 PM
Previous filing: Sep 21, 2021
Next filing: Oct 12, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMPL	Class A Common Stock	Options Exercise	$75.4K	+18K	+65.45%	$4.19	45.5K	Sep 28, 2021	Direct
transaction	AMPL	Class A Common Stock	Sale	-$900K	-18K	-39.56%	$50.00	27.5K	Sep 28, 2021	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	AMPL	Stock Option (Right to Buy)	Options Exercise	$0	-18K	-18.86%	$0.00	77.5K	Sep 28, 2021	Class A Common Stock	18K	$4.19	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	1/48th of the shares subject to the option vest on each monthly anniversary measured from October 26, 2020 (the "Vesting Commencement Date"), such that 100% of the shares subject to the option will be fully vested and exercisable on the fourth anniversary of the Vesting Commencement Date.