ASPEN AEROGELS INC

Ticker: ASPN CUSIP: 04523Y105 Class: Common Stock

Rockefeller Capital Management L.P.'s Holding History (CIK: 0001739439)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 200 Value ($000) $1 Avg Close $5.16 Range $2.79 - $9.35

Q3 2025

Shares 200 Value ($000) $1 Avg Close $7.05 Range $5.75 - $9.78

Q4 2022

Shares 436 Value ($000) $0 Avg Close $11.43 Range $8.90 - $14.44

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	200	$1	$5.16	$2.79 - $9.35
Q3 2025	200	$1	$7.05	$5.75 - $9.78
Q4 2022	436	$0	$11.43	$8.90 - $14.44