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United States Homebuilding & Construction Supplies

Aspen Aerogels Inc (ASPN)

Track

The most recent insider trading activity occurred on November 13, 2025, with proposed and planned sales by Director/Officer Donald Young and President/CEO Donald R Young. Prior to this, transactions in August 2025 involved sales by Chief Accounting Officer Daniel Santhosh P. Earlier in May 2025, the President and CEO made a purchase.
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Ticker: ASPN Exchange: NYS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Young Donald R
President and CEO
1 sale — total 183,609 USD
Planned sale 13 Nov 2025
Value US$810,356.76 | Price 81.68 | Shares 75,583
Proposed sale 13 Nov 2025
Value US$4,924,472.07 | Price 40.87 | Shares 81,134
Sale 13 Aug 2025
Value US$15,080.00 | Price 7.54 | Shares 2,000
Sale 12 Aug 2025
Value US$32,237.10 | Price 7.31 | Shares 4,410
Proposed sale 12 Aug 2025
Value US$32,251.65 | Price 7.31 | Shares 4,410
Buy 12 May 2025
Value US$107,000.00 | Price 5.35 | Shares 20,000
Planned sale 30 Sep 2024
Value US$1,902,550.65 | Price 30.03 | Shares 63,355
Planned sale 26 Aug 2024
Value US$3,070.00 | Price 30.70 | Shares 100
Planned sale 26 Aug 2024
Value US$212,939.10 | Price 30.14 | Shares 7,065
Planned sale 26 Aug 2024
Value US$33,776.30 | Price 30.65 | Shares 1,102
Planned sale 26 Aug 2024
Value US$728,601.78 | Price 30.11 | Shares 24,198
Proposed sale 26 Aug 2024
Value US$978,495.10 | Price 30.14 | Shares 32,465
Planned sale 29 May 2024
Value US$5,192,797.48 | Price 29.38 | Shares 176,746
Planned sale 28 May 2024
Value US$781,219.92 | Price 29.72 | Shares 26,286
Planned sale 28 May 2024
Value US$6,730,600.44 | Price 29.18 | Shares 230,658
Proposed sale 28 May 2024
Value US$20,505,649.08 | Price 29.67 | Shares 691,124
Sale 22 May 2024
Value US$122,031.00 | Price 27.30 | Shares 4,470
Proposed sale 22 May 2024
Value US$120,108.90 | Price 26.87 | Shares 4,470
Sale 14 May 2024
Value US$82,250,000.00 | Price 23.50 | Shares 3,500,000
Sale 13 May 2024
Value US$13,710.00 | Price 27.42 | Shares 500
Sale 13 May 2024
Value US$523,185.00 | Price 26.83 | Shares 19,500
Proposed sale 13 May 2024
Value US$536,864.00 | Price 26.84 | Shares 20,000
Sale 6 May 2024
Value US$1,379,526.59 | Price 25.01 | Shares 55,159
Sale 6 May 2024
Value US$653,125.95 | Price 25.65 | Shares 25,463
Sale 6 May 2024
Value US$575,596.53 | Price 25.11 | Shares 22,923
Proposed sale 6 May 2024
Value US$1,379,438.34 | Price 25.01 | Shares 55,159
Sale 20 Nov 2023
Value US$1,706.55 | Price 11.01 | Shares 155
Buy 7 Sep 2023
Value US$49,008.96 | Price 6.50 | Shares 7,541
Buy 5 Sep 2023
Value US$308,455.00 | Price 6.17 | Shares 50,000
Buy 22 Aug 2023
Value US$22,581.20 | Price 5.65 | Shares 4,000
Buy 8 Aug 2023
Value US$170,697.50 | Price 6.83 | Shares 25,000
Buy 6 Dec 2022
Value US$30,510.00 | Price 11.30 | Shares 2,700
Buy 30 Nov 2022
Value US$100,000,002.00 | Price 9.50 | Shares 10,526,316
Buy 12 May 2022
Value US$73,150.00 | Price 14.63 | Shares 5,000
Buy 28 Mar 2022
Value US$49,999,993.37 | Price 27.90 | Shares 1,791,986
Buy 22 Mar 2022
Value US$4,500,014.40 | Price 33.12 | Shares 135,870
Sale 30 Nov 2021
Value US$136,976.22 | Price 58.09 | Shares 2,358
Sale 30 Nov 2021
Value US$256,851.12 | Price 57.04 | Shares 4,503
Sale 30 Nov 2021
Value US$286,184.58 | Price 55.83 | Shares 5,126
Sale 30 Nov 2021
Value US$440,314.35 | Price 54.95 | Shares 8,013
Sale 9 Nov 2021
Value US$583,700.00 | Price 58.37 | Shares 10,000
Sale 8 Nov 2021
Value US$462,644.82 | Price 56.99 | Shares 8,118
Sale 8 Nov 2021
Value US$381,602.39 | Price 57.67 | Shares 6,617
Planned sale 3 Nov 2021
Value US$903,356.08 | Price 51.92 | Shares 17,399
Planned sale 3 Nov 2021
Value US$955,723.30 | Price 51.10 | Shares 18,703
Planned sale 2 Nov 2021
Value US$218,981.75 | Price 51.83 | Shares 4,225
Planned sale 2 Nov 2021
Value US$1,671,363.54 | Price 52.43 | Shares 31,878
Planned sale 1 Nov 2021
Value US$245,303.34 | Price 52.17 | Shares 4,702
Planned sale 1 Nov 2021
Value US$1,179,885.05 | Price 53.05 | Shares 22,241
Planned sale 1 Nov 2021
Value US$310,291.20 | Price 53.87 | Shares 5,760
Planned sale 1 Nov 2021
Value US$186,728.00 | Price 54.92 | Shares 3,400
Sale 11 Mar 2021
Value US$328,425.00 | Price 22.65 | Shares 14,500
Sale 1 Mar 2021
Value US$60,000.00 | Price 24.00 | Shares 2,500
Sale 25 Nov 2020
Value US$110,558.14 | Price 14.42 | Shares 7,667
Sale 25 Nov 2020
Value US$955,925.30 | Price 14.45 | Shares 66,154
Sale 18 Nov 2020
Value US$227,960.70 | Price 12.21 | Shares 18,670
Sale 18 Nov 2020
Value US$317,045.88 | Price 11.61 | Shares 27,308
Sale 17 Nov 2020
Value US$280,816.20 | Price 11.40 | Shares 24,633
Sale 16 Nov 2020
Value US$101,982.58 | Price 11.41 | Shares 8,938
Sale 16 Nov 2020
Value US$107,956.35 | Price 11.43 | Shares 9,445
Sale 13 Nov 2020
Value US$107,108.23 | Price 11.29 | Shares 9,487
Sale 12 Nov 2020
Value US$17,025.00 | Price 11.35 | Shares 1,500
Sale 11 Nov 2020
Value US$33,345.00 | Price 11.70 | Shares 2,850
Sale 10 Nov 2020
Value US$182,613.60 | Price 11.70 | Shares 15,608
Sale 9 Nov 2020
Value US$193,922.36 | Price 11.78 | Shares 16,462
Buy 9 Mar 2020
Value US$7,010.00 | Price 7.01 | Shares 1,000
Buy 9 Mar 2020
Value US$7,350.00 | Price 7.35 | Shares 1,000
Sale 9 Dec 2019
Value US$59,257.50 | Price 7.90 | Shares 7,500
Sale 27 Nov 2019
Value US$1,295.00 | Price 7.00 | Shares 185
Sale 26 Nov 2019
Value US$34,250.86 | Price 7.01 | Shares 4,886
Buy 4 Sep 2019
Value US$6,000.00 | Price 6.00 | Shares 1,000
Sale 13 Aug 2019
Value US$98,650.20 | Price 6.60 | Shares 14,947
Sale 12 Aug 2019
Value US$7,034.04 | Price 6.68 | Shares 1,053
Buy 5 Aug 2019
Value US$6,205.35 | Price 6.15 | Shares 1,009
Buy 28 May 2019
Value US$4,700.00 | Price 4.70 | Shares 1,000
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2025-11-14 2025-11-13 PlS Planned sale
3.9
Young Donald R

President and CEO

Executive Director
75,583 +48.1%
81.68
US$810,357 		75,583 +48.1% 81.68 US$810,357
2025-11-13 2025-11-13 PrS Proposed sale
3.9
DONALD YOUNG

Director; Officer

Executive Director
81,134
40.87
US$4,924,472 		81,134 40.87 US$4,924,472
2025-08-13 2025-08-13 S Sale
3.5
Daniel Santhosh P

Chief Accounting Officer

Officer
26,533 +25.8%
493.69
US$400,197 		26,533 +25.8% 493.69 US$400,197
2025-08-13 2025-08-12 S Sale
3.5
Daniel Santhosh P

Chief Accounting Officer

Officer
4,410 -18.2%
7.31
US$32,237 		4,410 -18.2% 7.31 US$32,237
2025-08-12 2025-08-12 PrS Proposed sale
3.5
SANTHOSH P DANIEL

Officer

Officer
4,410
7.31
US$32,252 		4,410 7.31 US$32,252
2025-05-12 2025-05-12 B Purchase
3.9
Young Donald R

President and CEO

Executive Director
20,000 +3.8%
5.35
US$107,000 		20,000 +3.8% 5.35 US$107,000
2024-10-01 2024-09-30 PlS Planned sale
3.9
Young Donald R

President and CEO

Executive Director
63,355 -11.6%
30.03
US$1,902,551 		63,355 -11.6% 30.03 US$1,902,551
2024-08-28 2024-08-26 PlS Planned sale
RODRIGUEZ RICARDO C.

CFO & Treasurer

Officer
100 -0.5%
30.70
US$3,070 		100 -0.5% 30.70 US$3,070
2024-08-28 2024-08-26 PlS Planned sale
RODRIGUEZ RICARDO C.

CFO & Treasurer

Officer
7,065 -25.3%
30.14
US$212,939 		7,065 -25.3% 30.14 US$212,939
2024-08-28 2024-08-26 PlS Planned sale
RODRIGUEZ RICARDO C.

CFO & Treasurer

Officer
1,102 -3.8%
30.65
US$33,776 		1,102 -3.8% 30.65 US$33,776
2024-08-28 2024-08-26 PlS Planned sale
RODRIGUEZ RICARDO C.

CFO & Treasurer

Officer
24,198 -45.4%
30.11
US$728,602 		24,198 -45.4% 30.11 US$728,602
2024-08-26 2024-08-26 PrS Proposed sale
RICARDO RODRIGUEZ

Officer

Officer
32,465
30.14
US$978,495 		32,465 30.14 US$978,495
2024-05-29 2024-05-29 PlS Planned sale
3.9
Young Donald R

President and CEO

Executive Director
176,746 -22.1%
29.38
US$5,192,797 		176,746 -22.1% 29.38 US$5,192,797
2024-05-29 2024-05-28 PlS Planned sale
3.9
Young Donald R

President and CEO

Executive Director
26,286 -5.0%
29.72
US$781,220 		26,286 -5.0% 29.72 US$781,220
2024-05-29 2024-05-28 PlS Planned sale
3.9
Young Donald R

President and CEO

Executive Director
230,658 -30.4%
29.18
US$6,730,600 		230,658 -30.4% 29.18 US$6,730,600
2024-05-28 2024-05-28 PrS Proposed sale
3.9
DONALD YOUNG

Director; Officer

Executive Director
691,124
29.67
US$20,505,649 		691,124 29.67 US$20,505,649
2024-05-23 2024-05-22 S Sale
1.5
Kool Kathleen
Non-Executive Director
4,470 -27.7%
27.30
US$122,031 		4,470 -27.7% 27.30 US$122,031
2024-05-22 2024-05-22 PrS Proposed sale
1.5
KATHLEEN KOOL

Director

Non-Executive Director
4,470
26.87
US$120,109 		4,470 26.87 US$120,109
2024-05-15 2024-05-14 S Sale
Wood River Capital, LLC
Large shareholder
3,500,000 -22.2%
23.50
US$82,250,000 		3,500,000 -22.2% 23.50 US$82,250,000
2024-05-14 2024-05-13 S Sale
2.2
SCHILLING KEITH L

SVP, Technology

Officer
500 -1.7%
27.42
US$13,710 		500 -1.7% 27.42 US$13,710
2024-05-14 2024-05-13 S Sale
2.2
SCHILLING KEITH L

SVP, Technology

Officer
19,500 -40.0%
26.83
US$523,185 		19,500 -40.0% 26.83 US$523,185
2024-05-13 2024-05-13 PrS Proposed sale
2.2
KEITH SCHILLING

Officer

Officer
20,000
26.84
US$536,864 		20,000 26.84 US$536,864
2024-05-08 2024-05-06 S Sale
2.1
Whitaker Corby C

SVP, Sales and Marketing

Officer
55,159 -29.5%
25.01
US$1,379,527 		55,159 -29.5% 25.01 US$1,379,527
2024-05-08 2024-05-06 S Sale
1.9
Landes Gregg

SVP, Operations and Strat Deve

Officer
25,463 -46.0%
25.65
US$653,126 		25,463 -46.0% 25.65 US$653,126
2024-05-08 2024-05-06 S Sale
1.9
Landes Gregg

SVP, Operations and Strat Deve

Officer
22,923 -29.3%
25.11
US$575,597 		22,923 -29.3% 25.11 US$575,597
2024-05-06 2024-05-06 PrS Proposed sale
2.1
CORBY WHITAKER

Officer

Officer
55,159
25.01
US$1,379,438 		55,159 25.01 US$1,379,438
2023-11-20 2023-11-20 S Sale
1.9
Landes Gregg

SVP, Operations and Strat Deve

Officer
155 -0.1%
11.01
US$1,707 		155 -0.1% 11.01 US$1,707
2023-09-07 2023-09-07 B Purchase
2.7
Mitchell Steven R
Non-Executive Director
7,541 +6.0%
6.50
US$49,009 		7,541 +6.0% 6.50 US$49,009
2023-09-06 2023-09-05 B Purchase
2.7
Mitchell Steven R
Non-Executive Director
50,000 +65.2%
6.17
US$308,455 		50,000 +65.2% 6.17 US$308,455
2023-08-22 2023-08-22 B Purchase
3.3
Noetzel Mark L
Non-Executive Director
4,000 +3.5%
5.65
US$22,581 		4,000 +3.5% 5.65 US$22,581
2023-08-08 2023-08-08 B Purchase
3.9
Young Donald R

President and CEO

Executive Director
25,000 +4.0%
6.83
US$170,698 		25,000 +4.0% 6.83 US$170,698
2022-12-07 2022-12-06 B Purchase
2.3
SWEETNAM JAMES E
Non-Executive Director
2,700 +77.3%
11.30
US$30,510 		2,700 +77.3% 11.30 US$30,510
2022-12-06 2022-11-30 B Purchase
Wood River Capital, LLC
Large shareholder
10,526,316 +200.3%
9.50
US$100,000,002 		10,526,316 +200.3% 9.50 US$100,000,002
2022-05-12 2022-05-12 B Purchase
3.9
Young Donald R

President and CEO

Executive Director
5,000 +0.8%
14.63
US$73,150 		5,000 +0.8% 14.63 US$73,150
2022-03-30 2022-03-28 B Purchase
KOCH INDUSTRIES INC
Large shareholder
1,791,986 +inf%
27.90
US$49,999,993 		1,791,986 +inf% 27.90 US$49,999,993
2022-03-23 2022-03-22 B Purchase
0.5
Gervis Robert M.
Non-Executive Director
135,870 +62.7%
33.12
US$4,500,014 		135,870 +62.7% 33.12 US$4,500,014
2021-12-01 2021-11-30 S Sale
3.8
Conte Kelley

Vice President,Human Resources

Officer
2,358 -3.7%
58.09
US$136,976 		2,358 -3.7% 58.09 US$136,976
2021-12-01 2021-11-30 S Sale
3.8
Conte Kelley

Vice President,Human Resources

Officer
4,503 -6.5%
57.04
US$256,851 		4,503 -6.5% 57.04 US$256,851
2021-12-01 2021-11-30 S Sale
3.8
Conte Kelley

Vice President,Human Resources

Officer
5,126 -6.9%
55.83
US$286,185 		5,126 -6.9% 55.83 US$286,185
2021-12-01 2021-11-30 S Sale
3.8
Conte Kelley

Vice President,Human Resources

Officer
8,013 -9.8%
54.95
US$440,314 		8,013 -9.8% 54.95 US$440,314
2021-11-10 2021-11-09 S Sale
2.1
Whitaker Corby C

SVP, Sales and Marketing

Officer
10,000 -8.3%
58.37
US$583,700 		10,000 -8.3% 58.37 US$583,700
2021-11-10 2021-11-08 S Sale
2.1
Whitaker Corby C

SVP, Sales and Marketing

Officer
8,118 -6.9%
56.99
US$462,645 		8,118 -6.9% 56.99 US$462,645
2021-11-10 2021-11-08 S Sale
2.1
Whitaker Corby C

SVP, Sales and Marketing

Officer
6,617 -5.3%
57.67
US$381,602 		6,617 -5.3% 57.67 US$381,602
2021-11-03 2021-11-03 PlS Planned sale
3.9
Young Donald R

President and CEO

Executive Director
17,399 -2.8%
51.92
US$903,356 		17,399 -2.8% 51.92 US$903,356
2021-11-03 2021-11-03 PlS Planned sale
3.9
Young Donald R

President and CEO

Executive Director
18,703 -2.9%
51.10
US$955,723 		18,703 -2.9% 51.10 US$955,723
2021-11-03 2021-11-02 PlS Planned sale
3.9
Young Donald R

President and CEO

Executive Director
4,225 -0.7%
51.83
US$218,982 		4,225 -0.7% 51.83 US$218,982
2021-11-03 2021-11-02 PlS Planned sale
3.9
Young Donald R

President and CEO

Executive Director
31,878 -4.8%
52.43
US$1,671,364 		31,878 -4.8% 52.43 US$1,671,364
2021-11-03 2021-11-01 PlS Planned sale
3.9
Young Donald R

President and CEO

Executive Director
4,702 -0.7%
52.17
US$245,303 		4,702 -0.7% 52.17 US$245,303
2021-11-03 2021-11-01 PlS Planned sale
3.9
Young Donald R

President and CEO

Executive Director
22,241 -3.2%
53.05
US$1,179,885 		22,241 -3.2% 53.05 US$1,179,885
2021-11-03 2021-11-01 PlS Planned sale
3.9
Young Donald R

President and CEO

Executive Director
5,760 -0.8%
53.87
US$310,291 		5,760 -0.8% 53.87 US$310,291
2021-11-03 2021-11-01 PlS Planned sale
3.9
Young Donald R

President and CEO

Executive Director
3,400 -0.5%
54.92
US$186,728 		3,400 -0.5% 54.92 US$186,728
2021-03-12 2021-03-11 S Sale
2.1
Whitaker Corby C

SVP, Sales and Marketing

Officer
14,500 -11.6%
22.65
US$328,425 		14,500 -11.6% 22.65 US$328,425
2021-03-02 2021-03-01 S Sale
3.8
Conte Kelley

Vice President,Human Resources

Officer
2,500 -3.9%
24.00
US$60,000 		2,500 -3.9% 24.00 US$60,000
2020-11-27 2020-11-25 S Sale
2.1
Whitaker Corby C

SVP, Sales and Marketing

Officer
7,667 -6.3%
14.42
US$110,558 		7,667 -6.3% 14.42 US$110,558
2020-11-27 2020-11-25 S Sale
2.1
Whitaker Corby C

SVP, Sales and Marketing

Officer
66,154 -36.7%
14.45
US$955,925 		66,154 -36.7% 14.45 US$955,925
2020-11-20 2020-11-18 S Sale
2.1
Whitaker Corby C

SVP, Sales and Marketing

Officer
18,670 -14.1%
12.21
US$227,961 		18,670 -14.1% 12.21 US$227,961
2020-11-20 2020-11-18 S Sale
1.9
Landes Gregg

SVP, Operations and Strat Dev

Officer
27,308 -28.8%
11.61
US$317,046 		27,308 -28.8% 11.61 US$317,046
2020-11-18 2020-11-17 S Sale
2.1
Whitaker Corby C

SVP, Sales and Marketing

Officer
24,633 -17.8%
11.40
US$280,816 		24,633 -17.8% 11.40 US$280,816
2020-11-18 2020-11-16 S Sale
2.1
Whitaker Corby C

SVP, Sales and Marketing

Officer
8,938 -7.3%
11.41
US$101,983 		8,938 -7.3% 11.41 US$101,983
2020-11-18 2020-11-16 S Sale
2.1
Whitaker Corby C

SVP, Sales and Marketing

Officer
9,445 -7.7%
11.43
US$107,956 		9,445 -7.7% 11.43 US$107,956
2020-11-16 2020-11-13 S Sale
2.1
Whitaker Corby C

SVP, Sales and Marketing

Officer
9,487 -7.7%
11.29
US$107,108 		9,487 -7.7% 11.29 US$107,108
2020-11-16 2020-11-12 S Sale
2.1
Whitaker Corby C

SVP, Sales and Marketing

Officer
1,500 -1.3%
11.35
US$17,025 		1,500 -1.3% 11.35 US$17,025
2020-11-12 2020-11-11 S Sale
2.1
Whitaker Corby C

SVP, Sales and Marketing

Officer
2,850 -2.4%
11.70
US$33,345 		2,850 -2.4% 11.70 US$33,345
2020-11-12 2020-11-10 S Sale
2.1
Whitaker Corby C

SVP, Sales and Marketing

Officer
15,608 -11.9%
11.70
US$182,614 		15,608 -11.9% 11.70 US$182,614
2020-11-12 2020-11-09 S Sale
2.1
Whitaker Corby C

SVP, Sales and Marketing

Officer
16,462 -12.5%
11.78
US$193,922 		16,462 -12.5% 11.78 US$193,922
2020-03-10 2020-03-09 B Purchase
3.9
Young Donald R

President and CEO

Executive Director
1,000 +0.3%
7.01
US$7,010 		1,000 +0.3% 7.01 US$7,010
2020-03-10 2020-03-09 B Purchase
3.9
Young Donald R

President and CEO

Executive Director
1,000 +0.3%
7.35
US$7,350 		1,000 +0.3% 7.35 US$7,350
2019-12-11 2019-12-09 S Sale Landes Gregg

SVP, Operations and Strat Dev

Officer
7,500 -10.0%
7.90
US$59,258 		7,500 -10.0% 7.90 US$59,258
2019-11-27 2019-11-27 S Sale
3.8
Conte Kelley

Vice President,Human Resources
185 -0.3%
7.00
US$1,295 		185 -0.3% 7.00 US$1,295
2019-11-27 2019-11-26 S Sale
3.8
Conte Kelley

Vice President,Human Resources
4,886 -6.7%
7.01
US$34,251 		4,886 -6.7% 7.01 US$34,251
2019-09-05 2019-09-04 B Purchase
3.9
Young Donald R

President and CEO

Executive Director
1,000 +0.3%
6.00
US$6,000 		1,000 +0.3% 6.00 US$6,000
2019-08-14 2019-08-13 S Sale Conte Kelley

Vice President,Human Resources

Officer
14,947 -16.9%
6.60
US$98,650 		14,947 -16.9% 6.60 US$98,650
2019-08-14 2019-08-12 S Sale Conte Kelley

Vice President,Human Resources

Officer
1,053 -1.2%
6.68
US$7,034 		1,053 -1.2% 6.68 US$7,034
2019-08-06 2019-08-05 B Purchase Young Donald R

President and CEO

Executive Director
1,009 +0.3%
6.15
US$6,205 		1,009 +0.3% 6.15 US$6,205
2019-05-29 2019-05-28 B Purchase
3.9
Young Donald R

President and CEO

Executive Director
1,000 +0.3%
4.70
US$4,700 		1,000 +0.3% 4.70 US$4,700
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