Amy E. Ard - 02 Sep 2021 Form 4 Insider Report for Proterra Inc (PTRAQ)

Role: Chief Financial Officer
Signature: /s/ Joshua Damm, Attorney-in-Fact
Issuer symbol: PTRAQ
Transactions as of: 02 Sep 2021
Transactions value $: $0
Form type: 4
Filing time: 07 Sep 2021, 18:53:59 UTC
Previous filing: 18 Aug 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	PTRAQ	Common Stock	Award	$0	+36.4K	+280.86%	$0.00	49.4K	02 Sep 2021	Direct	F1

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	PTRAQ	Employee Stock Option (Right to Buy)	Award	$0	+65.6K		$0.00	65.6K	02 Sep 2021	Common Stock	65.6K	$11.33	Direct	F2

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

Explanation of Responses:

Id	Content
F1	Certain of the shares are subject to forfeiture to the Issuer if underlying vesting conditions are not met.
F2	The stock option vests as of 1/4 of the total shares annually beginning on September 1, 2021 until fully vested, subject to the Reporting Person's provision of service to the Issuer on each vesting date.