Form 4 for ASPN ASPEN AEROGELS INC

Accepted 2025-10-03 00:00:00 ET · period of report 2025-10-01 · accession 0001193125-25-230376 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
D	2025-10-03	2025-10-01	ASPN	Thoele Grant Douglas	CFO, Treas	A - Grant	$0.00	+10.3K	14.9K	+223%	$0
DM	2025-10-03	2025-10-01	ASPN	Thoele Grant Douglas	CFO, Treas	A - Grant	$0.00	+35.1K	20.5K	New	$0

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2025-10-01	A	A	10,273	$0.00	14,881	D	—	—	(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, 2026, an additional one-third of the shares on March 5, 2027 and the remaining one-third of the shares on March 5, 2028. (F2) Represents 4,608 shares of Common Stock and 10,273 RSUs.
2	Derivative	Stock Options (Right to Buy)	2025-10-01	A	A	14,563	$0.00	14,563	D	$7.30 · — to 2035-10-01	14,563 Common Stock	(F3) The options vest as to one-third of the shares on March 5, 2026, an additional one-third of the shares on March 5, 2027 and the remaining one-third of the shares on March 5, 2028.
3	Derivative	Performance Share Units	2025-10-01	A	A	20,547	$0.00	20,547	D	— · — to —	20,547 Common Stock	(F4) Each performance share unit ("PSU") represents a contingent right to receive one share of Common Stock upon vesting. The PSUs vest on March 5, 2028, following the completion of the performance period, which begins on January 1, 2025 and ends on December 31, 2027. Ranging between 0-200% of the target number of PSUs (as reflected in Table II above), the PSUs vest based on the total shareholder return of Common Stock relative to the total stockholder return of the components of the Russell 2000 Index.