ASPEN AEROGELS INC

ASPNNYSE

$5.690.00 (0.00%)as of Oct 5, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

ASPEN AEROGELS INC price and activity chart data

Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (-34.6%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
Kim, LLC	14.80%	$77.9M	7.76%	Not reported
BlackRock, Inc.	6.36%	$33.5M	0.00%	Not reported
Oaktop Capital Management II, L.P.	6.23%	$32.8M	1.39%	Not reported
Vanguard Capital Management LLC	4.26%	$22.4M	0.00%	Not reported
Needham Investment Management LLC	3.93%	$20.7M	0.62%	Reduce 27.84%
George Kaiser Family Foundation	3.82%	$20.1M	1.93%	Not reported
State Street Corp	3.08%	$16.2M	0.00%	Not reported
American Century Companies Inc	3.02%	$15.9M	0.01%	Not reported
Jacobs Levy Equity Management, Inc	2.48%	$13M	0.05%	Not reported
Ameriprise Financial Inc	2.19%	$11.5M	0.00%	Not reported
Geode Capital Management, LLC	2.13%	$11.2M	0.00%	Not reported
Rice Hall James & Associates, LLC	1.97%	$10.4M	0.50%	Add 5.32%
Invesco Ltd.	1.95%	$10.3M	0.00%	Not reported
Gagnon Securities LLC	1.85%	$9.74M	1.88%	Reduce 17.51%
Dimensional Fund Advisors LP	1.74%	$9.17M	0.00%	Not reported
Goldman Sachs Group Inc	1.65%	$8.7M	0.00%	Not reported
Royce & Associates LP	1.59%	$8.39M	0.07%	Not reported
AQR Capital Management LLC	1.54%	$8.09M	0.00%	Not reported
Millennium Management LLC	1.43%	$7.55M	0.00%	Not reported
Marshall Wace, LLP	1.38%	$7.27M	0.01%	Not reported
D. E. Shaw & Co., Inc.	1.29%	$6.76M	0.00%	Not reported
JPMorgan Chase & Co	1.21%	$6.01M	0.00%	Not reported
Telemark Asset Management, LLC	1.21%	$6.34M	0.46%	Not reported
BNP Paribas Financial Markets	1.05%	$5.5M	0.00%	Not reported
Two Sigma Investments, LP	0.94%	$4.94M	0.00%	Not reported
Vanguard Portfolio Management LLC	0.84%	$4.43M	0.00%	Not reported
Acadian Asset Management LLC	0.83%	$4.34M	0.01%	Not reported
Federated Hermes, Inc.	0.72%	$3.78M	0.01%	Not reported
Charles Schwab Investment Management Inc	0.69%	$3.62M	0.00%	Not reported
Tudor Investment Corp Et Al	0.68%	$3.6M	0.01%	Not reported
Northern Trust Corp	0.68%	$3.59M	0.00%	Not reported
Vanguard Fiduciary Trust Co	0.57%	$3.01M	0.00%	Not reported
Panagora Asset Management Inc	0.53%	$2.81M	0.01%	Not reported
Morgan Stanley	0.48%	$2.52M	0.00%	Not reported
Deutsche Bank Ag\	0.45%	$2.36M	0.00%	Not reported
Baird Financial Group, Inc.	0.42%	$2.19M	0.00%	New Not reported
Algert Global LLC	0.36%	$1.92M	0.02%	Not reported
Trexquant Investment LP	0.36%	$1.92M	0.01%	Not reported
Renaissance Technologies LLC	0.33%	$1.74M	0.00%	Not reported
Bank of America Corp	0.30%	$1.6M	0.00%	Not reported
Citadel Advisors LLC	0.29%	$1.51M	0.00%	Not reported
Prudential Financial Inc	0.28%	$1.46M	0.00%	Not reported
XTX Topco Ltd	0.27%	$1.45M	0.02%	Not reported
First Trust Advisors LP	0.27%	$1.41M	0.00%	Add 22.69%
Bank of New York Mellon Corp	0.24%	$1.24M	0.00%	Not reported
Palogic Value Management, L.P.	0.22%	$1.18M	0.39%	Reduce 58.76%
Citigroup Inc	0.22%	$1.15M	0.00%	Not reported
Ironwood Investment Management LLC	0.22%	$1.14M	0.39%	Add 7.59%
Susquehanna International Group, LLP	0.21%	$1.12M	0.00%	Not reported
Arrowstreet Capital, Limited Partnership	0.21%	$1.09M	0.00%	Not reported

50 of 172 holders

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