Aspen Aerogels Inc. (ASPN)
NYSE · Wholesale-Lumber & Other Construction Materials · Wholesale trade · CIK 1145986 · fiscal year ends in Dec
Closing price $5.04 on 30 Oct 2026; 52-week range $2.57 to $8.14.
Key figures
The last twelve months reported, with the latest price and balance sheet.
- Revenue, last twelve months
- $202.1M
- Revenue growth
- -49.1%
- Net income, last twelve months
- -$126.2M
- Earnings per share
- -$1.53
- Gross margin
- 2.7%
- Operating margin
- -61.0%
- Net margin
- -62.4%
- Free cash flow
- $34.4M
- Return on equity
- -65.6%
- Market value
- $418.7M
- Cash
- $151.7M
- Debt
- $91.2M
- Debt to equity
- 0.47
- Shares outstanding
- 83.0M
Financial statements
Revenue, profit and cash flow by fiscal year, each year linked to its annual report.
| Fiscal year | Year end | Revenue | Operating income | Net income | EPS | Free cash flow | Filing |
|---|---|---|---|---|---|---|---|
| FY2025 | 31 Dec 2025 | $271.1M | -$378.2M | -$389.6M | -$4.73 | -$4.6M | 10-K filed 13 Mar 2026 |
| FY2024 | 31 Dec 2024 | $452.7M | $54.5M | $13.4M | $0.17 | -$40.7M | 10-K filed 27 Feb 2025 |
| FY2023 | 31 Dec 2023 | $238.7M | -$49.2M | -$45.8M | -$0.66 | -$218.1M | 10-K filed 7 Mar 2024 |
| FY2022 | 31 Dec 2022 | $180.4M | -$79.2M | -$82.7M | -$2.10 | -$272.4M | 10-K filed 16 Mar 2023 |
| FY2021 | 31 Dec 2021 | $121.6M | -$40.6M | -$37.1M | -$1.22 | -$32.4M | 10-K filed 1 Mar 2022 |
By quarter
| Quarter | Quarter end | Revenue | Net income | EPS |
|---|---|---|---|---|
| Q2 FY2026 | 30 Jun 2026 | $49.8M | -$23.3M | -$0.28 |
| Q1 FY2026 | 31 Mar 2026 | $37.9M | -$23.7M | -$0.29 |
| Q4 FY2025 | 31 Dec 2025 | $41.3M | -$72.9M | -$0.88 |
| Q3 FY2025 | 30 Sep 2025 | $73.0M | -$6.3M | -$0.08 |
| Q2 FY2025 | 30 Jun 2025 | $78.0M | -$9.1M | -$0.11 |
| Q1 FY2025 | 31 Mar 2025 | $78.7M | -$301.2M | -$3.67 |
| Q4 FY2024 | 31 Dec 2024 | $123.1M | $11.4M | $0.14 |
| Q3 FY2024 | 30 Sep 2024 | $117.3M | -$13.0M | -$0.17 |
Revenue by segment
As the company reports it in the segment note of its annual report.
By business, FY2025
| Segment | Revenue | Share |
|---|---|---|
| Thermal Barrier | $168.9M | 62.3% |
| Energy Industrial | $102.2M | 37.7% |
By product, FY2025
| Segment | Revenue | Share |
|---|---|---|
| Thermal Barrier | $168.9M | 62.3% |
| Energy Industrial | $102.2M | 37.7% |
By region, FY2025
| Segment | Revenue | Share |
|---|---|---|
| United States | $172.1M | 62.9% |
| International | $99.0M | 36.2% |
| Canada | $2.5M | 0.9% |
Company events
The newest 8-K filings of 148 held.
| Filed | Form | Event | Items |
|---|---|---|---|
| 15 Sep 2026 | 8-K | Investor update | 7.01, 9.01 |
| 6 Aug 2026 | 8-K | Results, Investor update | 2.02, 7.01, 9.01 |
| 18 May 2026 | 8-K | Leadership change, Shareholder vote, Investor update | 5.02, 5.07, 7.01, 9.01 |
| 7 May 2026 | 8-K | Results, Investor update | 2.02, 7.01, 9.01 |
| 21 Apr 2026 | 8-K | Investor update, Other events | 7.01, 8.01, 9.01 |
| 25 Feb 2026 | 8-K | Results, Investor update | 2.02, 7.01, 9.01 |
| 18 Dec 2025 | 8-K | Material agreement, Investor update | 1.01, 7.01, 9.01 |
| 6 Nov 2025 | 8-K | Results, Investor update | 2.02, 7.01, 9.01 |
| 11 Sep 2025 | 8-K | Leadership change | 5.02, 9.01 |
| 7 Aug 2025 | 8-K | Results, Investor update | 2.02, 7.01, 9.01 |
| 8 May 2025 | 8-K | Results, Investor update | 2.02, 7.01, 9.01 |
| 1 May 2025 | 8-K | Leadership change, Shareholder vote | 5.02, 5.07, 9.01 |
Every filing
The newest filings with the SEC of 323 held.
| Filed | Form | Period |
|---|---|---|
| 15 Sep 2026 | 8-K | 15 Sep 2026 |
| 7 Aug 2026 | 10-Q | 30 Jun 2026 |
| 6 Aug 2026 | 8-K | 6 Aug 2026 |
| 18 May 2026 | 8-K | 12 May 2026 |
| 8 May 2026 | 10-Q | 31 Mar 2026 |
| 7 May 2026 | 8-K | 7 May 2026 |
| 21 Apr 2026 | 8-K | 21 Apr 2026 |
| 27 Mar 2026 | ARS | 31 Dec 2025 |
| 27 Mar 2026 | DEFA14A | – |
| 27 Mar 2026 | DEF 14A | 13 May 2026 |
| 23 Mar 2026 | 10-K/A | 31 Dec 2025 |
| 13 Mar 2026 | PRE 14A | 13 May 2026 |
Insider trades
Form 4 trades by officers, directors and 10% owners, last 12 months.
| Traded | Insider | Type | Shares | Price | Value | Held after | Form 4 |
|---|---|---|---|---|---|---|---|
| 23 Sep 2026 | Wood River Capital, Llc, Insider | Sale outside a trading plan | 12,280,426 | $4.73 | $58.1M | 0 | 24 Sep 2026 |
| 13 Nov 2025 | Young Donald R, President and CEO | Sale under a trading plan | 56,845 | $3.23 | $183.6K | 494,011 | 14 Nov 2025 |
Planned insider sales
Form 144 notices, filed when the sell order goes to the broker.
| Filed | Seller | Shares | Value | Planned sale |
|---|---|---|---|---|
| 10 Aug 2026 | SANTHOSH P DANIEL, Officer | 5,593 | $35.3K | 10 Aug 2026 |
| 13 Nov 2025 | DONALD YOUNG, Director, Officer | 56,845 | $195.0K | 13 Nov 2025 |
Large holders
Schedule 13D and 13G filings by holders of more than 5% of the voting shares.
| Filed | Holder | Schedule | Stake | Shares |
|---|---|---|---|---|
| 19 Oct 2026 | Orin Hirschman | 13G | 8.6% | 7.2M |
| 24 Sep 2026 | Wood River Capital, LLC | 13D amended | 0% | 0 |
| 13 Aug 2026 | Needham Investment Management L.L.C. | 13G amended | 3.9% | 3.3M |
| 26 Mar 2026 | The Vanguard Group | 13G amended | 0% | 0 |
| 13 Feb 2026 | NEEDHAM INVESTMENT MANAGEMENT L.L.C. | 13G | 5.3% | 4.4M |
Short interest
Shares sold short and not yet bought back, on each FINRA settlement date.
| Settlement | Shares short | Change | Days to cover |
|---|---|---|---|
| 15 Oct 2026 | 6.1M | +0.73% | 7.64 |
| 30 Sep 2026 | 6.1M | -32.69% | 5.24 |
| 15 Sep 2026 | 9.1M | +7.86% | 13.93 |
| 31 Aug 2026 | 8.4M | +3.94% | 10.89 |
| 14 Aug 2026 | 8.1M | -8.64% | 3.22 |
| 31 Jul 2026 | 8.8M | +7.61% | 8.96 |
| 15 Jul 2026 | 8.2M | +15.79% | 8.41 |
| 30 Jun 2026 | 7.1M | -0.12% | 3.76 |
Funds that hold it
From each fund's latest Form 13F.
201 funds held it at 30 Jun 2026: 97 added and 45 trimmed in the quarter. The largest:
| Fund | Shares | Value | Change in the quarter |
|---|---|---|---|
| Kim, LLC | 12,280,426 | $77.9M | 0 |
| BlackRock, Inc. | 5,277,148 | $33.5M | +534,072 |
| Oaktop Capital Management II, L.P. | 5,168,674 | $32.8M | 0 |
| Vanguard Capital Management LLC | 3,539,271 | $22.4M | +103,115 |
| Needham Investment Management LLC | 3,260,800 | $20.7M | -1,257,975 |
| George Kaiser Family Foundation | 3,167,322 | $20.1M | 0 |
| State Street Corp. | 2,559,495 | $16.2M | +238,768 |
| American Century Companies Inc. | 2,510,042 | $15.9M | +1,262,259 |
| Jacobs Levy Equity Management, Inc. | 2,058,083 | $13.0M | +839,304 |
| Ameriprise Financial Inc. | 1,821,295 | $11.5M | +314,916 |
Peers
Companies in the same industry.
- Qxo, Inc. (QXO): revenue $9.9B, market value $8.0B
- Boise Cascade Co. (BCC): revenue $6.5B, market value $2.8B
- Capstone Holding Corp. (CAPS): revenue $60.2M, market value $35.0M