As of April 22, 2026, the three largest insider holders of ASPN are River Capital, Llc Wood (TenPercentOwner, 12.28Mn shares), Donald R Young (President And Ceo, 637.83K shares), Robert M. Gervis (Director, 355.18K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| River Capital, Llc Wood | - | 12,280,426 | 0 | 15 May, 2024 |
| Donald R Young | President And Ceo | 637,834 | 0 | 10 Mar, 2026 |
| Robert M. Gervis | - | 355,182 | 0 | 06 Jun, 2022 |
| Corby C Whitaker | Chief Commercial Officer | 205,315 | 0 | 10 Mar, 2026 |
| John F Fairbanks | Vp, Cfo And Treasurer | 141,277 | 0 | 01 Mar, 2022 |
| Kelley Conte | Senior Vice President, Hr | 128,183 | 0 | 02 Jun, 2023 |
| Mark L Noetzel | - | 121,220 | 0 | 31 May, 2024 |
| Gregg Landes | Chief Operating Officer | 102,931 | 0 | 10 Mar, 2026 |
| George L Gould | Chief Technology Officer | 95,381 | 0 | 25 Feb, 2022 |
| William P Noglows | - | 88,987 | 0 | 01 May, 2025 |
| Richard F Reilly | - | 79,231 | 0 | 06 Jun, 2022 |
| Grant Douglas Thoele | Cfo Treasurer | 77,732 | 0 | 10 Mar, 2026 |
| Ricardo C. Rodriguez | Cfo Treasurer | 57,311 | 0 | 11 Mar, 2025 |
| Keith L Schilling | Svp, Technology | 49,797 | 0 | 11 Mar, 2025 |
| Virginia Johnson | Clo, Gc, And Secretary | 44,450 | 0 | 27 May, 2025 |
| Stephanie Pittman | Chief Human Resources Officer | 42,257 | 0 | 08 Sep, 2025 |
| Kathleen Kool | - | 23,953 | 0 | 01 May, 2025 |
| Cari Robinson | - | 12,246 | 0 | 01 May, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 08 Mar, 2026 | Donald R Young | Common Stock | D | 4,275 | $3.22 | 637,834 | D | F |
| 08 Mar, 2026 | Corby C Whitaker | Common Stock | D | 1,924 | $3.22 | 205,315 | D | F |
| 08 Mar, 2026 | Grant Douglas Thoele | Common Stock | D | 590 | $3.22 | 77,732 | D | F |
| 08 Mar, 2026 | Gregg Landes | Common Stock | D | 1,924 | $3.22 | 102,931 | D | F |
| 04 Mar, 2026 | Corby C Whitaker | Common Stock | A | 57,462 | $0.00 | 211,146 | D | A |
| 04 Mar, 2026 | Grant Douglas Thoele | Common Stock | A | 55,298 | $0.00 | 80,690 | D | A |
| 04 Mar, 2026 | Donald R Young | Common Stock | A | 156,716 | $0.00 | 650,727 | D | A |
| 04 Mar, 2026 | Gregg Landes | Common Stock | A | 57,462 | $0.00 | 108,669 | D | A |
| 05 Mar, 2026 | Corby C Whitaker | Common Stock | D | 3,907 | $3.27 | 207,239 | D | F |
| 05 Mar, 2026 | Grant Douglas Thoele | Common Stock | D | 2,368 | $3.27 | 78,322 | D | F |
| 05 Mar, 2026 | Gregg Landes | Common Stock | D | 3,814 | $3.27 | 104,855 | D | F |
| 05 Mar, 2026 | Donald R Young | Common Stock | D | 8,618 | $3.27 | 642,109 | D | F |
| 04 Mar, 2026 | Gregg Landes | Stock Options (Right to Buy) | A | 77,824 | $0.00 | 77,824 | D | A |
| 04 Mar, 2026 | Corby C Whitaker | Stock Options (Right to Buy) | A | 77,824 | $0.00 | 77,824 | D | A |
| 04 Mar, 2026 | Donald R Young | Stock Options (Right to Buy) | A | 212,249 | $0.00 | 212,249 | D | A |
| 04 Mar, 2026 | Grant Douglas Thoele | Stock Options (Right to Buy) | A | 74,893 | $0.00 | 74,893 | D | A |
| 13 Nov, 2025 | Donald R Young | Common Stock | D | 56,845 | $3.23 | 494,011 | D | S |
| 01 Oct, 2025 | Grant Douglas Thoele | Common Stock | A | 10,273 | $0.00 | 14,881 | D | A |
| 01 Oct, 2025 | Grant Douglas Thoele | Stock Options (Right to Buy) | A | 14,563 | $0.00 | 14,563 | D | A |
| 01 Oct, 2025 | Grant Douglas Thoele | Performance Share Units | A | 20,547 | $0.00 | 20,547 | D | A |