Joyce Gareth T. - 10 Mar 2022 Form 4 Insider Report for Proterra Inc

Role: CEO and President, Director
Signature: /s/ Joshua Damm, Attorney-in-Fact
Issuer symbol: N/A
Transactions as of: 10 Mar 2022
Net transactions value: +$100,141
Form type: 4
Filing time: 14 Mar 2022, 20:23:48 UTC
Previous filing: 28 Feb 2022
Next filing: 30 Aug 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	PTRA	Common Stock	Award	$0	+120,772	+50%	$0.000000	360,251	10 Mar 2022	Direct	F1
transaction	PTRA	Common Stock	Options Exercise	$100,141	+20,950	+5.8%	$4.78^*	381,201	14 Mar 2022	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	PTRA	Employee Stock Option (right to buy)	Options Exercise	$0	-20,950	-33%	$0.000000	41,901	14 Mar 2022	Common Stock	20,950	$4.78	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 vested as to 25% of the total shares on November 17, 2021, and thereafter vests as to the total shares quarterly until fully vested, subject to the Reporting Person's provision of service to the Issuer on each vesting date.