Joshua P. Ensign - Aug 16, 2021 Form 4 Insider Report for Proterra Inc (PTRA)

Role: Chief Operating Officer
Signature: /s/ Joshua Damm, Attorney-in-Fact
Stock symbol: PTRA
Transactions as of: Aug 16, 2021
Transactions value $: -$117,551
Form type: 4
Date filed: 8/18/2021, 08:07 PM
Previous filing: Jul 22, 2021
Next filing: Sep 7, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	PTRA	Common Stock	Tax liability	-$118K	-11.9K	-40.18%	$9.86^*	17.7K	Aug 16, 2021	Direct	F1

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

Explanation of Responses:

Id	Content
F1	Represents the sale of shares of common stock in order to satisfy the tax liability of the Reporting Person in connection with the distribution of 29,671 shares of common stock previously reported on Table I pursuant to the earnout provision set forth in Section 3.09(a)(i) of the Agreement and Plan of Merger, dated as of January 11, 2021, by and among Proterra Inc (formerly ArcLight Clean Transition Corp.), Phoenix Merger Sub, Inc., and Proterra Operating Company, Inc. (formerly Proterra Inc) (the "Merger Agreement").

Content

Represents the sale of shares of common stock in order to satisfy the tax liability of the Reporting Person in connection with the distribution of 29,671 shares of common stock previously reported on Table I pursuant to the earnout provision set forth in Section 3.09(a)(i) of the Agreement and Plan of Merger, dated as of January 11, 2021, by and among Proterra Inc (formerly ArcLight Clean Transition Corp.), Phoenix Merger Sub, Inc., and Proterra Operating Company, Inc. (formerly Proterra Inc) (the "Merger Agreement").