Insider Transactions Reported by 14 Insiders of ASP Isotopes Inc.

Symbol
ASPI on Nasdaq
Location
Dallas, TX

Insiders trading volume in the past year

ASP Isotopes Inc. executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
Mann Paul Elliot Executive Chairman $41,299,384 -$7,882,317 -16% 02 Mar 2026
AK Jensen Investment Management Ltd 10%+ Owner $40,490,134 11 Oct 2024
Duncan Moore Director $9,232,534 -$696,233 -7% 29 Aug 2025
Robert Ainscow Coo $8,364,186 -$2,248,452 -21% 06 Mar 2026
Hendrik Strydom Director, 10%+ Owner $7,099,052 15 Nov 2022
Donald George Ainscow EVP, Gen Counsel, Secretary $5,380,000 01 Aug 2025
Todd Wider Director $4,571,702 -$648,823 -12% 18 Dec 2025
Heather Kiessling Chief Financial Officer $4,247,035 -$463,840 -9.8% 18 Dec 2025
Robert John Andrew Ryan Director $3,861,154 18 Dec 2025
Sergey Vasnetsov Director $3,685,063 01 Mar 2023
Ph.D. Einar Ronander Chief Scientific Adviser, 10%+ Owner $3,453,527 09 Nov 2022
Joshua J. Donfeld Director $1,060,000 26 Oct 2023
Michael Gorley Director $698,015 -$624,237 -47% 18 Dec 2025
Ralph L. Hunter Jr. Director $278,346 18 Dec 2025

Recent Insider Transactions by Companies or Individuals for ASP Isotopes Inc.

Showing up to 300 most recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
Robert Ainscow ASPI Common Stock Sale -0.55% $45,894 $5.44 -8,438 1,537,817 06 Mar 2026 Direct
Paul Elliot Mann ASPI Common Stock Sale 2.18% $881,464 $5.44 162,153 7,597,385 02 Mar 2026 Direct
Heather Kiessling ASPI Common Stock Sale -9.85% $463,840 $5.80 -80,000 732,500 18 Dec 2025 Direct
Todd Wider ASPI Common Stock Award 4.97% 36,548 772,247 18 Dec 2025 Direct
Robert John Andrew Ryan ASPI Common Stock Award 5.94% 36,548 652,222 18 Dec 2025 Direct
Ralph L. Hunter Jr. ASPI Common Stock Award 349.1% 36,548 47,018 18 Dec 2025 Direct
Michael Gorley ASPI Common Stock Award 44.9% 36,548 117,908 18 Dec 2025 Direct
Robert Ainscow ASPI Common Stock Sale -0.54% $52,341 $6.20 -8,438 1,546,255 08 Dec 2025 Direct
Paul Elliot Mann ASPI Common Stock Sale -2.05% $932,866 $5.75 -162,153 7,759,538 01 Dec 2025 Direct
Robert Ainscow ASPI Common Stock Sale -1.58% $144,225 $5.77 -25,000 1,554,693 25 Nov 2025 Direct
Paul Elliot Mann ASPI Common Stock Sale -0.63% $288,450 $5.77 -50,000 7,921,691 25 Nov 2025 Direct
Paul Elliot Mann ASPI Common Stock Sale -1.39% $844,538 $7.51 -112,500 7,971,691 17 Nov 2025 Direct
Robert Ainscow ASPI Common Stock Sale -4.1% $506,722 $7.51 -67,500 1,579,693 17 Nov 2025 Direct
Todd Wider ASPI Common Stock Award 3.59% 25,469 735,699 12 Nov 2025 Direct
Robert Ainscow ASPI Common Stock Sale -1.35% $305,978 $13.60 -22,500 1,647,193 14 Oct 2025 Direct
Michael Gorley ASPI Common Stock Sale -44% $624,237 $9.75 -64,000 81,360 30 Sep 2025 Direct
Todd Wider ASPI Common Stock Sale -9.45% $648,823 $8.76 -74,108 710,230 15 Sep 2025 Direct
Todd Wider ASPI Common Stock Tax liability -2.72% -21,892 784,338 14 Sep 2025 Direct
Todd Wider ASPI Common Stock Options Exercise 13.5% 96,000 806,230 14 Sep 2025 Direct
Todd Wider ASPI Stock Option (right to buy) Options Exercise -100% -96,000 0 14 Sep 2025 Direct
Robert Ainscow ASPI Common Stock Tax liability -2.43% -38,861 1,557,158 09 Sep 2025 Direct
Robert Ainscow ASPI Common Stock Options Exercise 21.2% 297,000 1,701,345 09 Sep 2025 Direct
Robert Ainscow ASPI Employee Stock Option (right to buy) Options Exercise -100% -297,000 0 09 Sep 2025 Direct
Paul Elliot Mann ASPI Common Stock Sale -0.99% $680,123 $8.39 -81,077 8,084,191 09 Sep 2025 Direct
Paul Elliot Mann ASPI Common Stock Tax liability -3.71% -285,110 7,399,734 09 Sep 2025 Direct
Paul Elliot Mann ASPI Common Stock Options Exercise 16.9% 1,216,000 8,399,734 09 Sep 2025 Direct
Paul Elliot Mann ASPI Employee Stock Option (right to buy) Options Exercise -100% -1,216,000 0 09 Sep 2025 Direct
Robert Ainscow ASPI Common Stock Sale -0.59% $71,945 $8.53 -8,438 1,411,554 08 Sep 2025 Direct
Paul Elliot Mann ASPI Common Stock Sale -1.11% $691,408 $8.53 -81,076 7,234,378 08 Sep 2025 Direct
Ralph L. Hunter Jr. ASPI Common Stock Award 10,470 10,470 06 Sep 2025 Direct
Duncan Moore ASPI Common Stock Sale -7.01% $696,232 $9.28 -75,000 994,553 29 Aug 2025 Direct
Donald George Ainscow ASPI Common Stock Award 400% 400,000 500,000 01 Aug 2025 Direct
Robert Ainscow ASPI Common Stock Sale -4.48% $374,761 $5.62 -66,668 1,419,992 17 Apr 2025 Direct
Paul Elliot Mann ASPI Common Stock Sale -4.15% $1,780,075 $5.62 -316,666 7,315,454 17 Apr 2025 Direct
Robert Ainscow ASPI Common Stock Sale -4.29% $363,023 $5.45 -66,666 1,486,660 16 Apr 2025 Direct
Paul Elliot Mann ASPI Common Stock Sale -3.98% $1,724,378 $5.45 -316,667 7,632,120 16 Apr 2025 Direct
Robert Ainscow ASPI Common Stock Sale -4.12% $383,563 $5.75 -66,666 1,553,326 15 Apr 2025 Direct
Paul Elliot Mann ASPI Common Stock Sale -3.83% $1,821,944 $5.75 -316,667 7,948,787 15 Apr 2025 Direct
Robert Ainscow ASPI Common Stock Award 32.8% 400,000 1,619,992 14 Apr 2025 Direct
Heather Kiessling ASPI Common Stock Award 97% 400,000 812,500 14 Apr 2025 Direct
Paul Elliot Mann ASPI Common Stock Award 21.1% 1,441,361 8,265,454 14 Apr 2025 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.