Joyce Gareth T. - 13 Dec 2021 Form 4 Insider Report for Proterra Inc

Role: President of Proterra Oper Co.
Signature: /s/ Luke Finn, Attorney-in-Fact
Issuer symbol: N/A
Transactions as of: 13 Dec 2021
Net transactions value: +$100,146
Form type: 4
Filing time: 15 Dec 2021, 17:56:01 UTC
Previous filing: 25 Oct 2021
Next filing: 22 Feb 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	Options Exercise	$100,146	+20,951	+72%	$4.78^*	50,086	13 Dec 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	PTRA	Stock Option (Right to Buy)	Options Exercise	$0	-20,951	-25%	$0.000000	62,851	13 Dec 2021	Common Stock	20,951	$4.78	Direct	F1

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

Explanation of Responses:

Id	Content
F1	The stock option (representing a right to purchase a total of 83,802 shares) vests 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. In the Reporting Person's Form 4 filed on June 16, 2021, Footnote (1) inadvertently reported that the vesting of this stock option (as well as the other stock option beneficially owned by the Reporting Person that was reported in such Form 4) commenced on December 17, 2021.

Content

The stock option (representing a right to purchase a total of 83,802 shares) vests 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. In the Reporting Person's Form 4 filed on June 16, 2021, Footnote (1) inadvertently reported that the vesting of this stock option (as well as the other stock option beneficially owned by the Reporting Person that was reported in such Form 4) commenced on December 17, 2021.