Santhosh P. Daniel - Mar 5, 2024 Form 4 Insider Report for ASPEN AEROGELS INC (ASPN)

Role: Chief Accounting Officer
Signature: /s/ Virginia H. Johnson, Attorney-in-Fact
Stock symbol: ASPN
Transactions as of: Mar 5, 2024
Transactions value $: $0
Form type: 4
Date filed: 3/7/2024, 04:49 PM
Previous filing: Sep 14, 2023
Next filing: Sep 16, 2024
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	+3.67K	+20.42%	$0.00	21.6K	Mar 5, 2024	Direct	F1, F2

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	+5.37K		$0.00	5.37K	Mar 5, 2024	Common Stock	5.37K	$16.34	Direct	F3

* 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 5, 2025, an additional one-third of the shares on March 5, 2026 and the remaining one-third of the shares on March 5, 2027.
F2	Represents 2,000 shares of Common Stock and 19,645 RSUs.
F3	The options vest as to one-third of the shares on March 5, 2025, an additional one-third of the shares on March 5, 2026 and the remaining one-third of the shares on March 5, 2027.