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United States Pharmaceuticals

ASP Isotopes Inc (ASPI)

Track

Over the last 90 days, ASP Isotopes Inc. has seen six insider transactions, all of which were proposed sales totaling approximately $2.54 million. No insider purchases were recorded during this period. The stock has experienced a 20.2% price increase over the past 90 days, trading significantly above its 52-week low.
Stock chart
Ticker: ASPI Exchange: NAS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Ainscow Robert
OFFICER
1 sale — total 100,000 USD
Proposed sale 8 Jun 2026
Value US$4,063,913.20 | Price 302.03 | Shares 10,784
Proposed sale 1 Jun 2026
Value US$824,683.13 | Price 391.51 | Shares 81,376
Proposed sale 16 Apr 2026
Value US$62,633.96 | Price 5.38 | Shares 11,642
Proposed sale 16 Apr 2026
Value US$121,050.00 | Price 5.38 | Shares 22,500
Proposed sale 15 Apr 2026
Value US$231,240.00 | Price 5.00 | Shares 46,248
Proposed sale 13 Apr 2026
Value US$112,000.00 | Price 4.48 | Shares 25,000
Proposed sale 6 Mar 2026
Value US$43,118.18 | Price 5.11 | Shares 8,438
Proposed sale 2 Mar 2026
Value US$865,897.00 | Price 5.34 | Shares 162,153
Proposed sale 18 Dec 2025
Value US$460,800.00 | Price 5.76 | Shares 80,000
Proposed sale 8 Dec 2025
Value US$51,640.56 | Price 6.12 | Shares 8,438
Proposed sale 1 Dec 2025
Value US$1,053,995.00 | Price 6.50 | Shares 162,153
Proposed sale 25 Nov 2025
Value US$325,000.00 | Price 6.50 | Shares 50,000
Proposed sale 25 Nov 2025
Value US$162,500.00 | Price 6.50 | Shares 25,000
Proposed sale 17 Nov 2025
Value US$438,750.00 | Price 6.50 | Shares 67,500
Proposed sale 15 Nov 2025
Value US$731,250.00 | Price 6.50 | Shares 112,500
Proposed sale 14 Oct 2025
Value US$299,700.00 | Price 13.32 | Shares 22,500
Proposed sale 12 Sep 2025
Value US$657,750.00 | Price 8.77 | Shares 75,000
Proposed sale 8 Sep 2025
Value US$69,191.60 | Price 8.20 | Shares 8,438
Proposed sale 8 Sep 2025
Value US$69,191.60 | Price 8.20 | Shares 8,438
Proposed sale 29 Aug 2025
Value US$789,750.00 | Price 10.53 | Shares 75,000
Proposed sale 15 Apr 2025
Value US$1,260,000.00 | Price 6.30 | Shares 200,000
Proposed sale 15 Apr 2025
Value US$5,985,000.00 | Price 6.30 | Shares 950,000
Sale 2 Aug 2024
Value US$178,296.00 | Price 2.23 | Shares 80,000
Sale 1 Aug 2024
Value US$78,007.76 | Price 2.45 | Shares 31,849
Buy 10 Jul 2024
Value US$210,230.94 | Price 3.40 | Shares 61,849
Buy 9 Jul 2024
Value US$91,497.00 | Price 3.05 | Shares 30,000
Buy 8 Jul 2024
Value US$213,360.00 | Price 3.05 | Shares 70,000
Buy 29 Jan 2024
Value US$36,650.60 | Price 2.35 | Shares 15,596
Buy 25 Jan 2024
Value US$254.00 | Price 2.54 | Shares 100
Buy 17 Jan 2024
Value US$191.00 | Price 1.91 | Shares 100
Buy 16 Jan 2024
Value US$4,896.00 | Price 1.92 | Shares 2,550
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
2026-06-08 2026-06-08 PrS Proposed sale
Ainscow Robert

OFFICER

Officer
10,784
302.03
US$4,063,913 		10,784 302.03 US$4,063,913
2026-06-01 2026-06-01 PrS Proposed sale
3.2
Mann Paul Elliot

DIRECTOR; OFFICER

Executive Director
81,376
391.51
US$824,683 		81,376 391.51 US$824,683
2026-04-17 2026-04-16 PrS Proposed sale
Moore Duncan

DIRECTOR

Non-Executive Director
1,094
255.05
US$2,226,913 		1,094 255.05 US$2,226,913
2026-04-16 2026-04-16 PrS Proposed sale
Ainscow Robert

OFFICER

Officer
22,500
5.38
US$121,050 		22,500 5.38 US$121,050
2026-04-15 2026-04-15 PrS Proposed sale
Heather Kiessling

Officer

Officer
46,248
5.00
US$231,240 		46,248 5.00 US$231,240
2026-04-13 2026-04-13 PrS Proposed sale
Ainscow Robert

OFFICER

Officer
25,000
4.48
US$112,000 		25,000 4.48 US$112,000
2026-03-06 2026-03-06 PrS Proposed sale
Ainscow Robert

OFFICER

Officer
8,438
5.11
US$43,118 		8,438 5.11 US$43,118
2026-03-02 2026-03-02 PrS Proposed sale
3.2
Mann Paul Elliot

DIRECTOR; OFFICER

Executive Director
162,153
5.34
US$865,897 		162,153 5.34 US$865,897
2025-12-18 2025-12-18 PrS Proposed sale
Heather Kiessling

Chief Financial Officer

Officer
80,000
5.76
US$460,800 		80,000 5.76 US$460,800
2025-12-11 2025-12-08 PrS Proposed sale
Ainscow Robert

OFFICER

Officer
8,438
6.12
US$51,641 		8,438 6.12 US$51,641
2025-11-25 2025-12-01 PrS Proposed sale
3.2
Mann Paul Elliot

DIRECTOR; OFFICER

Executive Director
162,153
6.50
US$1,053,995 		162,153 6.50 US$1,053,995
2025-11-25 2025-11-25 PrS Proposed sale
3.2
Mann Paul Elliot

DIRECTOR; OFFICER

Executive Director
50,000
6.50
US$325,000 		50,000 6.50 US$325,000
2025-11-17 2025-11-25 PrS Proposed sale
Ainscow Robert

OFFICER

Officer
25,000
6.50
US$162,500 		25,000 6.50 US$162,500
2025-11-17 2025-11-17 PrS Proposed sale
Ainscow Robert

OFFICER

Officer
67,500
6.50
US$438,750 		67,500 6.50 US$438,750
2025-11-25 2025-11-15 PrS Proposed sale
3.2
Mann Paul Elliot

DIRECTOR; OFFICER

Executive Director
112,500
6.50
US$731,250 		112,500 6.50 US$731,250
2025-10-16 2025-10-14 PrS Proposed sale
Ainscow Robert

OFFICER

Officer
22,500
13.32
US$299,700 		22,500 13.32 US$299,700
2025-09-12 2025-09-12 PrS Proposed sale
3.8
Todd Wider

Director

Non-Executive Director
75,000
8.77
US$657,750 		75,000 8.77 US$657,750
2025-09-08 2025-09-08 PrS Proposed sale
Ainscow Robert

Officer

Officer
8,438
8.20
US$69,192 		8,438 8.20 US$69,192
2025-09-08 2025-09-08 PrS Proposed sale
3.2
Mann Paul Elliot

Officer; Director; 10% Stockholder

Executive Director Large shareholder
8,438
8.20
US$69,192 		8,438 8.20 US$69,192
2025-08-29 2025-08-29 PrS Proposed sale
Moore Duncan

Director

Non-Executive Director
75,000
10.53
US$789,750 		75,000 10.53 US$789,750
2025-04-15 2025-04-15 PrS Proposed sale
Ainscow Robert

Officer

Officer
200,000
6.30
US$1,260,000 		200,000 6.30 US$1,260,000
2025-04-15 2025-04-15 PrS Proposed sale
3.2
Mann Paul Elliot

Officer; Director; 10% Stockholder

Executive Director Large shareholder
950,000
6.30
US$5,985,000 		950,000 6.30 US$5,985,000
2024-08-05 2024-08-02 S Sale
1.7
AK Jensen Investment Management Ltd
Large shareholder
80,000 -1.2%
2.23
US$178,296 		80,000 -1.2% 2.23 US$178,296
2024-08-05 2024-08-01 S Sale
1.7
AK Jensen Investment Management Ltd
Large shareholder
31,849 -0.5%
2.45
US$78,008 		31,849 -0.5% 2.45 US$78,008
2024-07-10 2024-07-10 B Purchase
1.7
AK Jensen Investment Management Ltd
Large shareholder
61,849 +0.9%
3.40
US$210,231 		61,849 +0.9% 3.40 US$210,231
2024-07-10 2024-07-09 B Purchase
1.7
AK Jensen Investment Management Ltd
Large shareholder
30,000 +0.5%
3.05
US$91,497 		30,000 +0.5% 3.05 US$91,497
2024-07-10 2024-07-08 B Purchase
1.7
AK Jensen Investment Management Ltd
Large shareholder
70,000 +1.1%
3.05
US$213,360 		70,000 +1.1% 3.05 US$213,360
2024-02-26 2024-01-29 B Purchase
3.7
Ryan Robert John Andrew
Non-Executive Director
15,596 +3.0%
2.35
US$36,651 		15,596 +3.0% 2.35 US$36,651
2024-02-26 2024-01-25 B Purchase
3.7
Ryan Robert John Andrew
Non-Executive Director
100 +0.0%
2.54
US$254 		100 +0.0% 2.54 US$254
2024-02-26 2024-01-17 B Purchase
3.7
Ryan Robert John Andrew
Non-Executive Director
100 +0.0%
1.91
US$191 		100 +0.0% 1.91 US$191
2024-02-26 2024-01-16 B Purchase
3.7
Ryan Robert John Andrew
Non-Executive Director
2,550 +0.5%
1.92
US$4,896 		2,550 +0.5% 1.92 US$4,896
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