Aspen Aerogels Inc

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Aspen Aerogels Inc
TickerASPN
CIK #0001145986
CUSIP04523Y105
SectorTrade & Services - Wholesale-Lumber & Other Construction Materials
Address30 Forbes Road Building B, Northborough, MA 01532
Source [EDGAR]
CIK Filing 2011 - 2025
[0001145986] 10-K
[0001145986] 10-Q
[0001145986] 3
[0001145986] 4
[0001145986] 5
[0001145986] 8-K
[0001145986] D
[0001145986] SC 13D
[0001145986] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
FMR LLC Aspen Aerogels Inc [2024-11-12] 0.0
BlackRock Inc Aspen Aerogels Inc [2024-01-31] 5.3
Encompass Capital Advisors LLC Aspen Aerogels Inc [2022-07-08] 7.58
Spring Creek Capital LLC Aspen Aerogels Inc [2022-04-05] 0.7
Spring Creek Capital LLC Aspen Aerogels Inc [2021-07-09] 10.88
BlackRock Inc Aspen Aerogels Inc [2021-02-02] 6.7
Oaktop Capital Management II LP Aspen Aerogels Inc [2020-02-04] 10.67
Leviticus Partners L P Aspen Aerogels Inc [2019-12-04] 4.56
Telemark Asset Management LLC Aspen Aerogels Inc [2019-02-26] 5.44
Oaktop Capital Management II LP Aspen Aerogels Inc [2019-02-13] 10.82
Oaktop Capital Management II LP Aspen Aerogels Inc [2018-02-14] 6.0
Ariel Investments LLC Aspen Aerogels Inc [2017-02-14] 1655326233369380.0
Wellington Management Group LLP Aspen Aerogels Inc [2016-02-11] 8.86
Wellington Trust Co N A Aspen Aerogels Inc [2016-02-11] 5.27
Price T Rowe Associates Inc /MD/ Aspen Aerogels Inc [2015-02-12] 6.1
George Kaiser Family Foundation Aspen Aerogels Inc [2015-02-11] 13.78
Gilder Gagnon Howe & Co LLC Aspen Aerogels Inc [2015-02-10] 5.17
RCGM LLC Aspen Aerogels Inc [2015-01-23] 12.7
FMR LLC Aspen Aerogels Inc [2014-07-10] 0.0
Form 3/4/5 Filer 2011 - 2025
Aspen Aerogels Inc
Daniel Santhosh P
Johnson Virginia
Young Donald R
Mitchell Steven R
Sweetnam James E
Robinson Cari
Kool Kathleen
Noglows William P
Schilling Keith L
Whitaker Corby C
Rodriguez Ricardo C
Landes Gregg
Pittman Stephanie
Koch, Inc.
Wood River Capital, LLC
Koch Industries LLC
Blalock Rebecca
Noetzel Mark L
Conte Kelley
Reilly Richard F
Gervis Robert M.
Spring Creek Capital LLC
Fairbanks John F
Gould George L
SCC Holdings, LLC
Ball Jeffrey Alan
RCP GP LLC
RCGM LLC
Stern Daniel H
Reservoir Capital Partners LP
Reservoir Capital Master Fund LP
Reservoir Capital Group LLC
Huff Craig A
Reservoir Capital Partners Cayman LP
Battin P Ramsay
Schmidt Kevin Alan
George Kaiser Family Foundation
GKFF Ventures I, LLC
Thomas Robert
Levit Ken
Prend David J
Form 13F Holdings
Firm Period DFND Voting Shares
Kim LLC [2025-06-30] DFND 0 12,280,426
BlackRock, Inc. [2025-06-30] SOLE 4,812,956 4,977,186
Oaktop Capital Management II LP [2025-06-30] SOLE 4,394,525 4,394,525
Vanguard Group Inc [2025-06-30] SOLE 0 4,386,306
George Kaiser Family Foundation [2025-06-30] SOLE 3,167,322 3,167,322
Needham Investment Management LLC [2025-06-30] DFND 2,970,800 2,970,800
Dimensional Fund Advisors LP [2025-06-30] SOLE 2,235,829 2,308,584
Goldman Sachs Group Inc [2025-06-30] DFND 1,852,725 2,172,963
State Street Corp [2025-06-30] DFND 1,751,163 1,920,997
Gagnon Securities LLC [2025-06-30] SOLE 0 1,899,108
Telemark Asset Management LLC [2025-06-30] SOLE 1,792,424 1,792,424
Federated Hermes Inc [2025-06-30] DFND 1,766,733 1,766,733
Geode Capital Management LLC [2025-06-30] DFND 1,582,742 1,582,742
Rice Hall James & Associates LLC [2025-06-30] SOLE 1,447,849 1,544,415
AWM Investment Company Inc [2025-06-30] SOLE 1,435,477 1,435,477
JPMorgan Chase & Co [2025-06-30] DFND 1,215,072 1,246,506
Millennium Management LLC [2025-06-30] SOLE 906,745 906,745
Invesco Ltd. [2025-06-30] DFND 0 831,991
Bank of America Corp /DE/ [2025-06-30] DFND 11,158 818,212
Two Sigma Investments LP [2025-06-30] SOLE 771,307 771,307
Penn Capital Management Company LLC [2025-06-30] SOLE 745,877 745,877
Morgan Stanley [2025-06-30] DFND 661,941 705,999
Renaissance Technologies LLC [2025-06-30] SOLE 679,200 679,200
Trexquant Investment LP [2025-06-30] SOLE 649,038 649,038
Palogic Value Management LP [2025-06-30] SOLE 610,000 610,000
Northern Trust Corp [2025-06-30] DFND 593,908 593,908
Gagnon Advisors LLC [2025-06-30] SOLE 0 565,570
Charles Schwab Investment Management Inc [2025-06-30] SOLE 545,843 545,843
Royce & Associates LP [2025-06-30] SOLE 531,068 531,068
Susquehanna International Group LLP [2025-06-30] OTR 278,987 517,487
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