OAKTOP CAPITAL MANAGEMENT II, L.P. - 31 Mar 2025 SCHEDULE 13G/A Report for ASPEN AEROGELS, INC. Common Stock, par value $0.00001 per share (ASPN)

Filing Manager: OAKTOP CAPITAL MANAGEMENT II, L.P.
Reporting Manager: Oaktop Capital Management II, L.P.
Security: ASPEN AEROGELS, INC. Common Stock, par value $0.00001 per share
Symbol: ASPN
Shares outstanding: 82,140,654 shares
Disclosed Ownership: 4,394,525 shares
Ownership: 5.4%
Form type: SCHEDULE 13G/A
Filing time: 15 May 2025, 14:17:47 UTC
Date of event: 31 Mar 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
Oaktop Capital Management II, L.P.	5.4%	4,394,525	4,394,525	0	Robert F. Moriarty	Robert F. Moriarty \| Principal