Aspen Aerogels Inc (ASPN) Insider Ownership

Historic Insider Ownership Trends

Aspen Aerogels's three largest insider shareholders as of March 23, 2026 are River Capital, Llc Wood (TenPercentOwner, 12.28Mn shares), Industries Inc Koch (TenPercentOwner, 1.79Mn shares), Donald R Young (President And Ceo, 637.83K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
River Capital, Llc Wood 12,280,426 0 15 May, 2024
Industries Inc Koch 0 1,791,986 30 Mar, 2022
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
Steven R Mitchell 146,528 0 01 May, 2025
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
Glenn E. Deegan Cao, Gc Corp Secretary 67,176 0 06 Mar, 2026
Rebecca Blalock 63,175 0 31 May, 2024
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
James E Sweetnam 25,951 0 01 May, 2025
Kathleen Kool 23,953 0 01 May, 2025
Santhosh P Daniel Chief Accounting Officer 15,330 0 06 Mar, 2026
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.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
08 Mar, 2026 Corby C Whitaker Common Stock D 1,924 $3.22 205,315 D F
08 Mar, 2026 Gregg Landes Common Stock D 1,924 $3.22 102,931 D F
08 Mar, 2026 Donald R Young Common Stock D 4,275 $3.22 637,834 D F
08 Mar, 2026 Grant Douglas Thoele Common Stock D 590 $3.22 77,732 D F
04 Mar, 2026 Grant Douglas Thoele Common Stock A 55,298 $0.00 80,690 D A
04 Mar, 2026 Corby C Whitaker Common Stock A 57,462 $0.00 211,146 D A
05 Mar, 2026 Santhosh P Daniel Common Stock D 986 $3.27 15,330 D F
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
04 Mar, 2026 Glenn E. Deegan Common Stock A 55,503 $0.00 67,176 D A
05 Mar, 2026 Donald R Young Common Stock D 8,618 $3.27 642,109 D F
04 Mar, 2026 Glenn E. Deegan Stock Options (Right to Buy) A 75,171 $0.00 75,171 D A
05 Mar, 2026 Grant Douglas Thoele Common Stock D 2,368 $3.27 78,322 D F
05 Mar, 2026 Corby C Whitaker Common Stock D 3,907 $3.27 207,239 D F
05 Mar, 2026 Gregg Landes Common Stock D 3,814 $3.27 104,855 D F
04 Mar, 2026 Donald R Young Stock Options (Right to Buy) A 212,249 $0.00 212,249 D A
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 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