| $348M | ||
| $250M | ||
| $109M | ||
| $61M | ||
| $40M | ||
| $21M |
Buys | $107,000 | 1 | 25 |
Sells | $230,926 | 3 | 75 |
| Young Donald R | President and CEO | 1 | $107,000 | 1 | $183,609 | $-76,609 |
| Daniel Santhosh P | Chief Accounting Officer | 0 | $0 | 2 | $47,317 | $-47,317 |
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.
Over the last 12 months, insiders at Aspen Aerogels, Inc. have bought $107,000 and sold $230,926 worth of Aspen Aerogels, Inc. stock.
On average, over the past 5 years, insiders at Aspen Aerogels, Inc. have bought $38.82M and sold $28.22M worth of stock each year.
Highest buying activity among insiders over the last 12 months: Young Donald R (President and CEO) — $107,000.
The last purchase of 20,000 shares for transaction amount of $107,000 was made by Young Donald R (President and CEO) on 2025‑05‑12.
| 2025-11-13 | Sale | Young Donald R | President and CEO | 56,845 0.0691% | $3.23 | $183,609 | +3.42% | |
| 2025-08-13 | Sale | Daniel Santhosh P | Chief Accounting Officer | 2,000 0.0025% | $7.54 | $15,080 | -52.61% | |
| 2025-08-12 | Sale | Daniel Santhosh P | Chief Accounting Officer | 4,410 0.0056% | $7.31 | $32,237 | -52.29% | |
| 2025-05-12 | Young Donald R | President and CEO | 20,000 0.0248% | $5.35 | $107,000 | +11.41% | ||
| 2024-09-30 | Sale | Young Donald R | President and CEO | 63,355 0.0907% | $30.03 | $1.9M | -73.35% | |
| 2024-08-26 | Sale | RODRIGUEZ RICARDO C. | CFO & Treasurer | 32,465 0.0419% | $30.14 | $978,387 | -73.58% | |
| 2024-05-29 | Sale | Young Donald R | President and CEO | 176,746 0.2314% | $29.38 | $5.19M | -51.37% | |
| 2024-05-28 | Sale | Young Donald R | President and CEO | 256,944 0.3379% | $29.24 | $7.51M | -50.87% | |
| 2024-05-22 | Sale | Kool Kathleen | director | 4,470 0.0059% | $27.30 | $122,031 | -45.90% | |
| 2024-05-14 | Sale | Wood River Capital, LLC | 10 percent owner | 3.5M 4.2501% | $23.50 | $82.25M | -36.46% | |
| 2024-05-13 | Sale | SCHILLING KEITH L | SVP, Technology | 20,000 0.0258% | $26.84 | $536,895 | -39.15% | |
| 2024-05-06 | Sale | Whitaker Corby C | SVP, Sales and Marketing | 55,159 0.0699% | $25.01 | $1.38M | -30.06% | |
| 2024-05-06 | Sale | Landes Gregg | SVP, Operations and Strat Deve | 48,386 0.0623% | $25.39 | $1.23M | -30.06% | |
| 2023-11-20 | Sale | Landes Gregg | SVP, Operations and Strat Deve | 155 0.0002% | $11.01 | $1,707 | +66.12% | |
| 2023-09-07 | Mitchell Steven R | director | 7,541 0.0107% | $6.50 | $49,009 | +147.16% | ||
| 2023-09-05 | Mitchell Steven R | director | 50,000 0.0711% | $6.17 | $308,455 | +158.72% | ||
| 2023-08-22 | Noetzel Mark L | director | 4,000 0.0058% | $5.65 | $22,581 | +175.85% | ||
| 2023-08-08 | Young Donald R | President and CEO | 25,000 0.0358% | $6.83 | $170,698 | +120.48% | ||
| 2022-12-06 | SWEETNAM JAMES E | director | 2,700 0.0055% | $11.30 | $30,510 | -29.97% | ||
| 2022-11-30 | Wood River Capital, LLC | director | 10.53M 16.8532% | $9.50 | $100M | -34.91% |
| Young Donald R | President and CEO | 494011 0.5964% | $1.85M | 19 | 7 | +11.16% |
| Daniel Santhosh P | Chief Accounting Officer | 17879 0.0216% | $66,867.46 | 0 | 2 | |
| Wood River Capital, LLC | 10 percent owner | 12280426 14.8268% | $45.93M | 1 | 1 | <0.0001% |
| GEORGE KAISER FAMILY FOUNDATION | 10 percent owner | 7125283 8.6028% | $26.65M | 0 | 1 | |
| KOCH INDUSTRIES INC | 1791986 2.1636% | $6.7M | 1 | 0 | <0.0001% | |
| Gervis Robert M. | 352483 0.4256% | $1.32M | 31 | 0 | +8.34% | |
| Mitchell Steven R | director | 134260 0.1621% | $502,132.40 | 2 | 0 | +152.94% |
| Whitaker Corby C | SVP, Sales and Marketing | 131533 0.1588% | $491,933.42 | 2 | 15 | <0.0001% |
| Noetzel Mark L | director | 119322 0.1441% | $446,264.28 | 3 | 0 | +53.03% |
| Conte Kelley | Vice President,Human Resources | 62097 0.075% | $232,242.78 | 0 | 8 | |
| NOGLOWS WILLIAM P | director | 46178 0.0558% | $172,705.72 | 1 | 0 | <0.0001% |
| Reilly Richard F | director | 36178 0.0437% | $135,305.72 | 1 | 0 | <0.0001% |
| Landes Gregg | SVP, Operations and Strat Deve | 29853 0.036% | $111,650.22 | 0 | 5 | |
| SCHILLING KEITH L | SVP, Technology | 28792 0.0348% | $107,682.08 | 0 | 1 | |
| RODRIGUEZ RICARDO C. | CFO & Treasurer | 20790 0.0251% | $77,754.60 | 0 | 1 | |
| Kool Kathleen | director | 11685 0.0141% | $43,701.90 | 0 | 1 | |
| SWEETNAM JAMES E | director | 6195 0.0075% | $23,169.30 | 1 | 0 | <0.0001% |
| FAIRBANKS JOHN F | VP, CFO and Treasurer | 1485 0.0018% | $5,553.90 | 1 | 0 | <0.0001% |
| HUFF CRAIG A | 10 percent owner | 0 0% | $0 | 0 | 5 |
| Increased Positions | 93 | +33.1% | 12M | +16.13% |
| Decreased Positions | 125 | -44.48% | 13M | -17.58% |
| New Positions | 46 | New | 3M | New |
| Sold Out Positions | 61 | Sold Out | 5M | Sold Out |
| Total Postitions | 249 | -11.39% | 70M | -1.45% |
| Kim, Llc | $35,490.00 | 14.8% | 12.28M | 0 | 0% | 2025-09-30 |
| Blackrock, Inc. | $14,385.00 | 6% | 4.98M | +372 | +<0.01% | 2025-09-30 |
| Vanguard Group Inc | $13,035.00 | 5.43% | 4.51M | +22,686 | +0.51% | 2025-09-30 |
| Oaktop Capital Management Ii, L.P. | $12,700.00 | 5.3% | 4.39M | 0 | 0% | 2025-09-30 |
| Needham Investment Management Llc | $9,941.00 | 4.14% | 3.44M | +425,500 | +14.12% | 2025-09-30 |
| George Kaiser Family Foundation | $9,154.00 | 3.82% | 3.17M | 0 | 0% | 2025-09-30 |
| Dimensional Fund Advisors Lp | $6,508.00 | 2.71% | 2.25M | -197,090 | -8.05% | 2025-09-30 |
| State Street Corp | $5,620.00 | 2.34% | 1.94M | +23,639 | +1.23% | 2025-09-30 |
| Telemark Asset Management, Llc | $5,180.00 | 2.16% | 1.79M | 0 | 0% | 2025-09-30 |
| Gagnon Securities Llc | $5,071.00 | 2.11% | 1.75M | -144,275 | -7.6% | 2025-09-30 |