NYSE · CIK 0001145986
ASPN ASPEN AEROGELS INC
Insider trading from SEC Form 4. Last filing 12 d ago. Close $5.65 on Oct 9, 2026, +120% from the 52-week low and -36% from the high.
In brief
ASPEN AEROGELS INC (ASPN) has 56 SEC Form 4 filings on file from 14 insiders, the latest filed on Oct 1, 2026. In the last 90 days insiders made 0 open-market buys worth $0 and 1 open-market sell worth $58M, net -$58M.
5 open-market trades have been scored at ASPN. The newest: Koch, Inc. (10% owner) sold $58M of stock on Sep 23, 2026, filed Sep 24, 2026, scored 57 (moderate).
3 Form 144 notices of planned sales are on file, the latest filed Aug 10, 2026.
Last 90 days
Price and insider trades, last year
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
Open-market buys and sells at ASPEN AEROGELS INC, scored.
| Score | Insider | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 57Moderate | Koch, Inc. owner sell | $58M 12,280,426 shares | -100% | - | |
| 22Weak | Donald R Young President and CEO sell | $184k 56,845 shares | -10% | 0% from low-79% from high | |
| 31Weak | Santhosh P Daniel Chief Accounting Officer sell | $47k 6,410 shares | -26% | +72% from low-74% from high | |
| 43Moderate | Donald R Young President and CEO buy | $107k 20,000 shares | +4% | +22% from low-82% from high | |
| 15Weak | Gregg Landes SVP, Operations and Strat Deve sell | $1,707 155 shares | -0% | +99% from low-17% from high |
Planned sales
Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales
| Filed | Seller | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Aug 10, 2026 | SANTHOSH P DANIEL Officer | 5,593 0.01% of outstanding | $35k | Aug 10, 2026 | none |
| Nov 13, 2025 | DONALD YOUNG Director, Officer | 56,845 0.07% of outstanding | $195k | Nov 13, 2025 | none |
| Aug 12, 2025 | SANTHOSH P DANIEL Officer | 4,410 0.01% of outstanding | $32k | Aug 12, 2025 | none |
Transactions
The newest 50 of 105 rows filed, every code.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 30, 2026 | Glenn E. Deegan CAO, GC & Corp Secretary | FTax withholding Common Stock | -1,143 | $5.48 | $6,264 | 66,033 | 12 d ago |
| Sep 23, 2026 | Koch, Inc. owner | SOpen-market sale Common Stock | -12,280,426 | $4.73 | $58M | 0 | 19 d ago |
| Jun 23, 2026 | William P Noglows director | MOption exercise Common Stock | +14,799 | $4.75 | $70k | 114,156 | Jun 26, 2026 |
| Jun 23, 2026 | William P Noglows director | MOption exercise Stock Options (Right to Buy)derivative | -14,799 | $0.00 | $0 | 0 | Jun 26, 2026 |
| May 13, 2026 | Cari Robinson director | AGrant or award Common Stock | +10,370 | $0.00 | $0 | 22,616 | May 14, 2026 |
| May 13, 2026 | Kathleen Kool director | AGrant or award Common Stock | +10,370 | $0.00 | $0 | 34,323 | May 14, 2026 |
| May 13, 2026 | James E Sweetnam director | AGrant or award Common Stock | +10,370 | $0.00 | $0 | 36,321 | May 14, 2026 |
| May 13, 2026 | Steven R Mitchell director | AGrant or award Common Stock | +10,370 | $0.00 | $0 | 156,898 | May 14, 2026 |
| May 13, 2026 | William P Noglows director | AGrant or award Common Stock | +10,370 | $0.00 | $0 | 99,357 | May 14, 2026 |
| May 13, 2026 | James E Sweetnam director | AGrant or award Stock Options (Right to Buy)derivative | +8,706 | $0.00 | $0 | 8,706 | May 14, 2026 |
| May 13, 2026 | Kathleen Kool director | AGrant or award Stock Options (Right to Buy)derivative | +8,706 | $0.00 | $0 | 8,706 | May 14, 2026 |
| May 13, 2026 | Steven R Mitchell director | AGrant or award Stock Options (Right to Buy)derivative | +8,706 | $0.00 | $0 | 8,706 | May 14, 2026 |
| May 13, 2026 | Cari Robinson director | AGrant or award Stock Options (Right to Buy)derivative | +8,706 | $0.00 | $0 | 8,706 | May 14, 2026 |
| May 13, 2026 | William P Noglows director | AGrant or award Stock Options (Right to Buy)derivative | +8,706 | $0.00 | $0 | 8,706 | May 14, 2026 |
| Mar 8, 2026 | Grant Douglas Thoele CFO & Treasurer | FTax withholding Common Stock | -590 | $3.22 | $1,900 | 77,732 | Mar 10, 2026 |
| Mar 8, 2026 | Corby C Whitaker Chief Commercial Officer | FTax withholding Common Stock | -1,924 | $3.22 | $6,195 | 205,315 | Mar 10, 2026 |
| Mar 8, 2026 | Donald R Young President and CEO | FTax withholding Common Stock | -4,275 | $3.22 | $14k | 637,834 | Mar 10, 2026 |
| Mar 8, 2026 | Gregg Landes Chief Operating Officer | FTax withholding Common Stock | -1,924 | $3.22 | $6,195 | 102,931 | Mar 10, 2026 |
| Mar 4, 2026 | Donald R Young President and CEO | AGrant or award Common Stock | +156,716 | $0.00 | $0 | 650,727 | Mar 6, 2026 |
| Mar 5, 2026 | Santhosh P Daniel Chief Accounting Officer | FTax withholding Common Stock | -986 | $3.27 | $3,224 | 15,330 | Mar 6, 2026 |
| Mar 4, 2026 | Grant Douglas Thoele CFO & Treasurer | AGrant or award Common Stock | +55,298 | $0.00 | $0 | 80,690 | Mar 6, 2026 |
| Mar 4, 2026 | Corby C Whitaker SVP, Sales and Marketing | AGrant or award Common Stock | +57,462 | $0.00 | $0 | 211,146 | Mar 6, 2026 |
| Mar 4, 2026 | Glenn E. Deegan CAO, GC & Corp Secretary | AGrant or award Common Stock | +55,503 | $0.00 | $0 | 67,176 | Mar 6, 2026 |
| Mar 4, 2026 | Gregg Landes SVP, Operations and Strat Deve | AGrant or award Common Stock | +57,462 | $0.00 | $0 | 108,669 | Mar 6, 2026 |
| Mar 5, 2026 | Grant Douglas Thoele CFO & Treasurer | FTax withholding Common Stock | -2,368 | $3.27 | $7,743 | 78,322 | Mar 6, 2026 |
| Mar 5, 2026 | Corby C Whitaker SVP, Sales and Marketing | FTax withholding Common Stock | -3,907 | $3.27 | $13k | 207,239 | Mar 6, 2026 |
| Mar 5, 2026 | Gregg Landes SVP, Operations and Strat Deve | FTax withholding Common Stock | -3,814 | $3.27 | $12k | 104,855 | Mar 6, 2026 |
| Mar 5, 2026 | Donald R Young President and CEO | FTax withholding Common Stock | -8,618 | $3.27 | $28k | 642,109 | Mar 6, 2026 |
| Mar 4, 2026 | Glenn E. Deegan CAO, GC & Corp Secretary | AGrant or award Stock Options (Right to Buy)derivative | +75,171 | $0.00 | $0 | 75,171 | Mar 6, 2026 |
| Mar 4, 2026 | Donald R Young President and CEO | AGrant or award Stock Options (Right to Buy)derivative | +212,249 | $0.00 | $0 | 212,249 | Mar 6, 2026 |
| Mar 4, 2026 | Grant Douglas Thoele CFO & Treasurer | AGrant or award Stock Options (Right to Buy)derivative | +74,893 | $0.00 | $0 | 74,893 | Mar 6, 2026 |
| Mar 4, 2026 | Corby C Whitaker SVP, Sales and Marketing | AGrant or award Stock Options (Right to Buy)derivative | +77,824 | $0.00 | $0 | 77,824 | Mar 6, 2026 |
| Mar 4, 2026 | Gregg Landes SVP, Operations and Strat Deve | AGrant or award Stock Options (Right to Buy)derivative | +77,824 | $0.00 | $0 | 77,824 | Mar 6, 2026 |
| Oct 1, 2025 | Grant Douglas Thoele CFO & Treasurer | AGrant or award Common Stock | +10,273 | $0.00 | $0 | 25,392 | Dec 19, 2025 |
| Nov 13, 2025 | Donald R Young President and CEO | SOpen-market sale Common Stock10b5-1 | -56,845 | $3.23 | $184k | 494,011 | Nov 14, 2025 |
| Oct 1, 2025 | Grant Douglas Thoele CFO & Treasurer | AGrant or award Common Stock | +10,273 | $0.00 | $0 | 14,881 | Oct 3, 2025 |
| Oct 1, 2025 | Grant Douglas Thoele CFO & Treasurer | AGrant or award Stock Options (Right to Buy)derivative | +14,563 | $0.00 | $0 | 14,563 | Oct 3, 2025 |
| Oct 1, 2025 | Grant Douglas Thoele CFO & Treasurer | AGrant or award Performance Share Unitsderivative | +20,547 | $0.00 | $0 | 20,547 | Oct 3, 2025 |
| Sep 30, 2025 | Glenn E. Deegan CAO, GC & Corp Secretary | AGrant or award Common Stock | +11,673 | $0.00 | $0 | 11,673 | Oct 2, 2025 |
| Sep 30, 2025 | Glenn E. Deegan CAO, GC & Corp Secretary | AGrant or award Stock Options (Right to Buy)derivative | +16,416 | $0.00 | $0 | 16,416 | Oct 2, 2025 |
| Sep 30, 2025 | Glenn E. Deegan CAO, GC & Corp Secretary | AGrant or award Performance Share Unitsderivative | +23,347 | $0.00 | $0 | 23,347 | Oct 2, 2025 |
| Sep 13, 2025 | Santhosh P Daniel Chief Accounting Officer | FTax withholding Common Stock | -1,563 | $6.59 | $10k | 16,316 | Sep 15, 2025 |
| Sep 5, 2025 | Stephanie Pittman Chief Human Resources Officer | FTax withholding Common Stock | -1,581 | $6.61 | $10k | 42,257 | Sep 8, 2025 |
| Aug 12, 2025 | Santhosh P Daniel Chief Accounting Officer | SOpen-market sale Common Stock | -4,410 | $7.31 | $32k | 19,879 | Aug 13, 2025 |
| Aug 13, 2025 | Santhosh P Daniel Chief Accounting Officer | SOpen-market sale Common Stock | -2,000 | $7.54 | $15k | 17,879 | Aug 13, 2025 |
| May 23, 2025 | Virginia Johnson CLO, GC, and Secretary | FTax withholding Common Stock | -6,129 | $6.39 | $39k | 44,450 | May 27, 2025 |
| May 12, 2025 | Donald R Young President and CEO | POpen-market purchase Common Stock | +20,000 | $5.35 | $107k | 550,856 | May 12, 2025 |
| Apr 30, 2025 | Cari Robinson director | AGrant or award Common Stock | +10,370 | $0.00 | $0 | 12,246 | May 1, 2025 |
| Apr 30, 2025 | William P Noglows director | AGrant or award Common Stock | +10,370 | $0.00 | $0 | 88,987 | May 1, 2025 |
| Apr 30, 2025 | Kathleen Kool director | AGrant or award Common Stock | +10,370 | $0.00 | $0 | 23,953 | May 1, 2025 |
Insiders
Everyone who has filed a Form 4 here.
- Glenn E. DeeganCAO, GC & Corp Secretary
- Santhosh P DanielChief Accounting Officer
- Virginia JohnsonCLO, GC, and Secretary
- Koch, Inc.owner, director
- Kathleen Kooldirector
- Gregg LandesSVP, Operations and Strat Deve
- Steven R Mitchelldirector
- William P Noglowsdirector
- Stephanie PittmanChief Human Resources Officer
- Cari Robinsondirector
- James E Sweetnamdirector
- Grant Douglas ThoeleCFO & Treasurer
- Corby C WhitakerChief Commercial Officer
- Donald R YoungPresident and CEO
Questions about ASPN
Answered from the filings on this page, as of the latest one.
Are insiders buying ASPN?
As of Oct 1, 2026, SEC Form 4 filings show 0 open-market buys worth $0 by 0 insiders and 1 open-market sell worth $58M by 1 insider at ASPEN AEROGELS INC in the last 90 days, net -$58M. Only purchases (code P) and sales (code S) count; grants, option exercises and tax withholding do not.
Who was the last insider to trade ASPN on the open market?
Koch, Inc. (10% owner) sold $58M of ASPN on Sep 23, 2026 and filed the Form 4 on Sep 24, 2026. InsiderTell scored 57 (moderate).
How many insiders file Form 4 at ASPEN AEROGELS INC?
14 people have filed a Form 4 at ASPEN AEROGELS INC, among them Glenn E. Deegan (CAO, GC & Corp Secretary), Santhosh P Daniel (Chief Accounting Officer), Virginia Johnson (CLO, GC, and Secretary). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.