Virginia Johnson - 01 Jun 2023 Form 4 Insider Report for ASPEN AEROGELS INC (ASPN)

Role: CLO, GC and Secretary
Signature: /s/ Virginia H. Johnson
Issuer symbol: ASPN
Transactions as of: 01 Jun 2023
Net transactions value: -$4,221
Form type: 4
Filing time: 05 Jun 2023, 16:05:10 UTC
Previous filing: 06 Jun 2022
Next filing: 08 Sep 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ASPN	Common Stock	Award	$0	+16,519	+28%	$0.000000	76,064	01 Jun 2023	Direct	F1
transaction	ASPN	Common Stock	Tax liability	$4,221	-583	-0.77%	$7.24	75,481	02 Jun 2023	Direct	F2, F3

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	ASPN	Stock Options (Right to Buy)	Award	$0	+75,979		$0.000000	75,979	01 Jun 2023	Common Stock	75,979	$6.81	Direct	F4

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

Explanation of Responses:

Id	Content
F1	Each Restricted Stock Unit ("RSU") represents the right to receive one share of Common Stock upon vesting. The RSUs vest as to one-third of the shares on March 8, 2024, an additional one-third of the shares on March 8, 2025 and the remaining one-third of the shares on March 8, 2026.
F2	Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of RSUs.
F3	Represents 1,402 shares of Common Stock, 20,489 RSUs and 53,590 shares of Restricted Common Stock.
F4	The options vest as to one-third of the shares on March 8, 2024, an additional one-third of the shares on March 8, 2025 and the remaining one-third of the shares on March 8, 2026.