ASPN — ASPEN AEROGELS INC

Ownership history in Penbrook Management LLC  ·  3 quarters on record

This page tracks every 13F SEC filing in which Penbrook Management LLC reported a position in ASPEN AEROGELS INC (ASPN). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
0.09% (2025 Q1)
Avg. % of fund
0.08%
First filed
2025 Q1
Last filed
2025 Q3
Quarters held
3
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q3 REDUCED 14,180 -3,975 -21.9% 0.07% $99K $6.96
2025 Q2 UNCHANGED 18,155 — 0% 0.09% $116K $5.92
2025 Q1 INITIATED 18,155 — — 0.09% $116K $6.39
% of Fund (quarterly)    ASPN price (monthly, adj. close)

Other funds also holding ASPN

As of 2025 Q4 — sorted by position size

KIM, LLC 3Y 2.81% GEORGE KAISER FAMILY FOUNDATION 3Y 7Y 1.2% OAKTOP CAPITAL MANAGEMENT II, L.P. 3Y 7Y 1.05% Samjo Management, LLC 0.94% NEEDHAM INVESTMENT MANAGEMENT LLC 3Y 7Y 0.78% Firsthand Capital Management, Inc. 3Y 7Y 0.66% GAGNON SECURITIES LLC 3Y 7Y 0.65% Palogic Value Management, L.P. 3Y 0.62% Telemark Asset Management, LLC 3Y 7Y 0.28% RICE HALL JAMES & ASSOCIATES, LLC 3Y 7Y 0.22%
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