James E. Sweetnam - Apr 30, 2025 Form 4 Insider Report for ASPEN AEROGELS INC (ASPN)

Role: Director
Signature: /s/ Virginia H. Johnson, Attorney-in-Fact
Stock symbol: ASPN
Transactions as of: Apr 30, 2025
Transactions value $: $0
Form type: 4
Date filed: 5/1/2025, 08:51 PM
Previous filing: May 31, 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	+10.4K	+66.56%	$0.00	26K	Apr 30, 2025	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	+9.11K		$0.00	9.11K	Apr 30, 2025	Common Stock	9.11K	$5.40	Direct	F3

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

Explanation of Responses:

Id	Content
F1	The reporting person was granted Restricted Stock Units ("RSUs") representing a portion of the annual grant of equity for service as a non-employee director pursuant to the Issuer's Non-Employee Director Compensation Policy. Each RSU represents the right to receive one share of Common Stock upon vesting. These RSUs will vest on the earlier of (a) April 30, 2026, or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2026.
F2	Represents 15,581 shares of Common Stock and 10,370 RSUs.
F3	The reporting person was granted options representing the remaining portion of the annual grant of equity for service as a non-employee director pursuant to the Issuer's Non-Employee Director Compensation Policy. The options will vest on the earlier of (a) April 30, 2026, or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2026.