Penbrook Management LLC

SEC CIK: 0001381055
Latest filing: Jul 23, 2026

SEC filings (opens in a new tab)

ASPN holding history

Aspen Aerogels Inc in every 13F filed by Penbrook Management LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

ASPN overview All 13F holders of ASPN Full Q2 2026 holdings

Shares (Q4 2025): 0; Sold out in Q4 2025
Value: $0
% of portfolio: 0.0%
Quarters held: 3; Since Q1 2025

Holdings of ASPN by Penbrook Management LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q4 2025	0	$0	0.0%	−14,180−100.0%	Sold out	Holders
Q3 2025	14,180	$98.7K	0.1%	00.0%	Unchanged	Holders
Q2 2025	14,180	$83.9K	0.1%	−3,975−21.9%	Reduced	Holders
Q1 2025	18,155	$116.0K	0.1%	+18,155	New	Holders