Institutional shares held 75.9 Million
3.51M calls
1.94M puts
Total value of holdings $395M
$18.3M calls
$10.1M puts
Market Cap $211M
40,440,700 Shares Out.
Institutional ownership 187.62%
# of Institutions 268


Latest Institutional Activity in ASPN

Top Purchases

Q1 2025
Janney Montgomery Scott LLC Shares Held: 107K ($555K)
Q1 2025
Sg Americas Securities, LLC Shares Held: 67.4K ($351K)
Q1 2025
Bouvel Investment Partners, LLC Shares Held: 91K ($474K)
Q1 2025
Penbrook Management LLC Shares Held: 18.2K ($94.6K)
Q1 2025
Exchange Traded Concepts, LLC Shares Held: 7.44K ($38.7K)

Top Sells

Q1 2025
Imc Chicago, LLC Shares Held: 47.1K ($246K)
Q1 2025
Gamma Investing LLC Shares Held: 519 ($2.7K)
Q1 2025
Rhumbline Advisers Shares Held: 91K ($474K)
Q1 2025
Farther Finance Advisors, LLC Shares Held: 36 ($188)
Q4 2024
Dld Asset Management, LP Shares Held: 104K ($543K)

About ASPN

Aspen Aerogels, Inc. designs, develops, manufactures, and sells aerogel insulation products primarily for use in the energy infrastructure and building materials markets in the United States, Asia, Canada, Europe, and Latin America. The company offers PyroThin thermal barriers for use in lithium-ion batteries in electric vehicles and energy storage industries; Pyrogel XTE that reduces the risk of corrosion under insulation in energy infrastructure operating systems; Pyrogel HPS for applications within the power generation market; Pyrogel XTF to provide protection against fire; Cryogel Z for sub-ambient and cryogenic applications in the energy infrastructure market; and Spaceloft Subsea for use in pipe-in-pipe applications in offshore oil production. It also offers Spaceloft Grey and Spaceloft A2 for use in the building materials market; and Cryogel X201, which is used in designing cold systems, such as refrigerated appliances, cold storage equipment, and aerospace systems. The company was founded in 2001 and is headquartered in Northborough, Massachusetts.


Insider Transactions at ASPN

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
1.03M Shares
From 20 Insiders
Grant, award, or other acquisition 236K shares
Exercise of conversion of derivative security 796K shares
Sell / Disposition
4.26M Shares
From 15 Insiders
Payment of exercise price or tax liability 105K shares
Open market or private sale 4.16M shares

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P - Open market or private purchase×
S - Open market or private sale×
V - Transaction voluntarily reported earlier than required×
A - Grant, award, or other acquisition×
D - Sale (or disposition) back to the issuer×
F - Payment of exercise price or tax liability×
I - Discretionary transaction×
M - Exercise of conversion of derivative security×
C - Conversion of derivative security×
E - Expiration of short derivative position×
H - Expiration (or cancellation) of long derivative position with value received×
O - Exercise of out-of-the-money derivative securities×
X - Exercise of in-the-money or at-the-money derivatives securities×
G - Bona fide gift×
L - Small Acquisition×
W - Acquisition or disposition by will or laws×
Z - Deposit into or withdrawal from voting trust×
J - Other acquisition or disposition×
K - Transaction in equity swap or similar instrument×
U - Disposition due to a tender of shares in a change of control transaction×
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