ASP Isotopes Inc. ($ASPI) Insider Transactions

Last updated: 2026-03-14 11:56 UTC | Total transactions: 100

In the last 12 months, insiders at ASP Isotopes Inc. ($ASPI) filed 100 transactions with the SEC: 25 open-market purchases totaling $1,048,741 and 24 sales totaling $14,583,132. Net insider sentiment: net selling.

ASP Isotopes Inc. operates in the Miscellaneous chemical products industry (Industrial Applications and Services sector).

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View all SEC Filings for ASP Isotopes Inc. (ASPI).

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Recent Insider Transactions

Transaction Date Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
March 6, 2026 Ainscow Robert COO S Common Stock 8438 $5.44 1,537,817.0000 110,840,122 0.55% 0.01%
March 2, 2026 Mann Paul Elliot Executive Chairman S Common Stock 162153 $5.44 7,597,385.0000 110,840,122 2.18% 0.15%
Dec. 18, 2025 Kiessling Heather Chief Financial Officer S Common Stock 80000 $5.80 732,500.0000 110,840,122 9.85% 0.07%
Dec. 18, 2025 Wider Todd Not found A Common Stock 36548 $0.00 772,247.0000 110,840,122 4.97% 0.03%
Dec. 18, 2025 Gorley Michael Not found A Common Stock 36548 $0.00 117,908.0000 110,840,122 44.92% 0.03%
Dec. 18, 2025 Hunter Ralph L. JR Not found A Common Stock 36548 $0.00 47,018.0000 110,840,122 349.07% 0.03%
Dec. 18, 2025 Ryan Robert John Andrew Not found A Common Stock 36548 $0.00 652,222.0000 110,840,122 5.94% 0.03%
Dec. 8, 2025 Ainscow Robert Interim CEO and COO S Common Stock 8438 $6.20 1,546,255.0000 110,840,122 0.54% 0.01%
Dec. 1, 2025 Mann Paul Elliot Executive Chairman S Common Stock 162153 $5.75 7,759,538.0000 110,840,122 2.05% 0.15%
Sept. 6, 2025 Hunter Ralph L. JR Not found A Common Stock 10470 $0.00 10,470.0000 72,068,059 9999.99% 0.01%
Nov. 25, 2025 Mann Paul Elliot Executive Officer S Common Stock 50000 $5.77 7,921,691.0000 110,840,122 0.63% 0.05%
Nov. 17, 2025 Mann Paul Elliot Executive Officer S Common Stock 112500 $7.51 7,971,691.0000 72,068,059 1.39% 0.16%
Nov. 25, 2025 Ainscow Robert Interim CEO and COO S Common Stock 25000 $5.77 1,554,693.0000 110,840,122 1.58% 0.02%
Aug. 1, 2025 Ainscow Donald George EVP, Gen Counsel, Secretary A Common Stock 400000 $0.00 500,000.0000 72,068,059 400.00% 0.56%
Nov. 17, 2025 Ainscow Robert Interim CEO and COO S Common Stock 67500 $7.51 1,579,693.0000 72,068,059 4.10% 0.09%
Nov. 12, 2025 Wider Todd Not found A Common Stock 25469 $0.00 735,699.0000 72,068,059 3.59% 0.04%
Oct. 14, 2025 Ainscow Robert Interim CEO and COO S Common Stock 22500 $13.60 1,647,193.0000 72,068,059 1.35% 0.03%
Sept. 14, 2025 Wider Todd Not found F Common Stock 21892 $8.77 784,338.0000 72,068,059 2.72% 0.03%
Sept. 14, 2025 Wider Todd Not found M Common Stock 96000 $2.00 806,230.0000 72,068,059 13.52% 0.13%
Sept. 14, 2025 Wider Todd Not found M Stock Option (right to buy) 96000 $0.00 0.0000 72,068,059 100.00% 0.13%
Sept. 15, 2025 Wider Todd Not found S Common Stock 74108 $8.76 710,230.0000 72,068,059 9.45% 0.10%
Sept. 30, 2025 Gorley Michael Not found S Common Stock 64000 $9.75 81,360.0000 72,068,059 44.03% 0.09%
Sept. 9, 2025 Mann Paul Elliot Chief Executive Officer M Employee Stock Option (right to buy) 1000000 $0.00 0.0000 72,068,059 100.00% 1.39%
Sept. 8, 2025 Ainscow Robert Chief Operating Officer S Common Stock 8438 $8.53 1,411,554.0000 72,068,059 0.59% 0.01%
Sept. 9, 2025 Ainscow Robert Chief Operating Officer M Common Stock 150000 $0.25 1,564,554.0000 72,068,059 10.60% 0.21%
Sept. 9, 2025 Ainscow Robert Chief Operating Officer F Common Stock 4396 $8.53 1,557,158.0000 72,068,059 0.28% 0.01%
Sept. 9, 2025 Ainscow Robert Chief Operating Officer M Common Stock 12000 $2.00 1,569,158.0000 72,068,059 0.77% 0.02%
Sept. 9, 2025 Ainscow Robert Chief Operating Officer F Common Stock 2813 $8.53 1,566,345.0000 72,068,059 0.18% 0.00%
Sept. 9, 2025 Ainscow Robert Chief Operating Officer M Common Stock 135000 $2.00 1,701,345.0000 72,068,059 8.62% 0.19%
Sept. 9, 2025 Ainscow Robert Chief Operating Officer F Common Stock 31652 $8.53 1,669,693.0000 72,068,059 1.86% 0.04%
Sept. 9, 2025 Ainscow Robert Chief Operating Officer M Employee Stock Option (right to buy) 150000 $0.00 0.0000 72,068,059 100.00% 0.21%
Sept. 9, 2025 Ainscow Robert Chief Operating Officer M Employee Stock Option (right to buy) 12000 $0.00 0.0000 72,068,059 100.00% 0.02%
Sept. 9, 2025 Ainscow Robert Chief Operating Officer M Employee Stock Option (right to buy) 135000 $0.00 0.0000 72,068,059 100.00% 0.19%
Sept. 8, 2025 Mann Paul Elliot Chief Executive Officer S Common Stock 81076 $8.53 7,234,378.0000 72,068,059 1.11% 0.11%
Sept. 9, 2025 Mann Paul Elliot Chief Executive Officer M Common Stock 216000 $2.00 7,450,378.0000 72,068,059 2.99% 0.30%
Sept. 9, 2025 Mann Paul Elliot Chief Executive Officer F Common Stock 50644 $8.53 7,399,734.0000 72,068,059 0.68% 0.07%
Sept. 9, 2025 Mann Paul Elliot Chief Executive Officer M Common Stock 1000000 $2.00 8,399,734.0000 72,068,059 13.51% 1.39%
Sept. 9, 2025 Mann Paul Elliot Chief Executive Officer F Common Stock 234466 $8.53 8,165,268.0000 72,068,059 2.79% 0.33%
Sept. 9, 2025 Mann Paul Elliot Chief Executive Officer S Common Stock 81077 $8.39 8,084,191.0000 72,068,059 0.99% 0.11%
Sept. 9, 2025 Mann Paul Elliot Chief Executive Officer M Employee Stock Option (right to buy) 216000 $0.00 0.0000 72,068,059 100.00% 0.30%
Aug. 29, 2025 Moore Duncan Not found S Common Stock 75000 $9.28 994,553.0000 72,068,059 7.01% 0.10%
April 15, 2025 Ainscow Robert Chief Operating Officer S Common Stock 66666 $5.75 1,553,326.0000 72,068,059 4.12% 0.09%
April 17, 2025 Mann Paul Elliot Chief Executive Officer S Common Stock 316666 $5.62 7,315,454.0000 72,068,059 4.15% 0.44%
April 17, 2025 Ainscow Robert Chief Operating Officer S Common Stock 66668 $5.62 1,419,992.0000 72,068,059 4.48% 0.09%
April 15, 2025 Mann Paul Elliot Chief Executive Officer S Common Stock 316667 $5.75 7,948,787.0000 72,068,059 3.83% 0.44%
April 16, 2025 Mann Paul Elliot Chief Executive Officer S Common Stock 316667 $5.45 7,632,120.0000 72,068,059 3.98% 0.44%
April 16, 2025 Ainscow Robert Chief Operating Officer S Common Stock 66666 $5.45 1,486,660.0000 72,068,059 4.29% 0.09%
April 14, 2025 Mann Paul Elliot Chief Executive Officer A Common Stock 1441361 $0.00 8,265,454.0000 72,068,059 21.12% 2.00%
April 14, 2025 Kiessling Heather Chief Financial Officer A Common Stock 400000 $0.00 812,500.0000 72,068,059 96.97% 0.56%
April 14, 2025 Ainscow Robert Chief Operating Officer A Common Stock 400000 $0.00 1,619,992.0000 72,068,059 32.79% 0.56%
May 30, 2024 Ryan Robert John Andrew Not found L Common Stock 1050 $5.40 615,674.0000 0 0.17% 0.00%
Nov. 29, 2024 Gorley Michael Not found L Common Stock 1000 $5.05 145,360.0000 0 0.69% 0.00%
Dec. 9, 2024 Moore Duncan Not found A Common Stock 77626 $0.00 974,315.0000 0 8.66% 0.00%
Dec. 9, 2024 Moore Duncan Not found A Common Stock 95238 $0.00 1,069,553.0000 0 9.77% 0.00%
Nov. 20, 2024 Ryan Robert John Andrew Not found A Common Stock 42522 $0.00 614,624.0000 0 7.43% 0.00%
Nov. 20, 2024 Wider Todd Not found A Common Stock 42522 $0.00 710,230.0000 0 6.37% 0.00%
Nov. 20, 2024 Gorley Michael Not found A Common Stock 42522 $0.00 144,360.0000 0 41.75% 0.00%
Nov. 20, 2024 Moore Duncan Not found A Common Stock 42522 $0.00 896,689.0000 0 4.98% 0.00%
Oct. 11, 2024 AK Jensen Investment Management Ltd TenPercentOwner A Common Stock, par value $0.01 per share 30000 $3.03 6,746,874.0000 0 0.45% 0.00%
Sept. 6, 2024 Ainscow Robert Chief Operating Officer A Common Stock 300000 $0.00 1,219,992.0000 0 32.61% 0.00%
Sept. 6, 2024 Mann Paul Elliot Chief Executive Officer A Common Stock 978466 $0.00 6,824,093.0000 0 16.74% 0.00%
Aug. 13, 2024 Gorley Michael Not found A Common Stock 8380 $0.00 101,838.0000 0 8.97% 0.00%
Aug. 13, 2024 Wider Todd Not found A Common Stock 77626 $0.00 572,470.0000 0 15.69% 0.00%
Aug. 13, 2024 Wider Todd Not found A Common Stock 95238 $0.00 667,708.0000 0 16.64% 0.00%
Aug. 2, 2024 AK Jensen Investment Management Ltd TenPercentOwner S Common Stock 80000 $2.23 6,566,874.0000 0 1.20% 0.00%
Aug. 1, 2024 AK Jensen Investment Management Ltd TenPercentOwner S Common Stock, par value $0.01 per share ("Common Stock") 31849 $2.45 6,646,874.0000 0 0.48% 0.00%
July 15, 2024 Mann Paul Elliot Chief Executive Officer P Common Stock 39984 $0.00 5,845,627.0000 0 0.69% 0.00%
July 15, 2024 Ainscow Robert Chief Operating Officer P Common Stock 19992 $0.00 919,992.0000 0 2.22% 0.00%
July 10, 2024 AK Jensen Investment Management Ltd TenPercentOwner P Common Stock 61849 $3.40 6,678,723.0000 0 0.93% 0.00%
July 9, 2024 AK Jensen Investment Management Ltd TenPercentOwner P Common Stock 30000 $3.05 6,616,874.0000 0 0.46% 0.00%
July 8, 2024 AK Jensen Investment Management Ltd TenPercentOwner P Common Stock, par value $0.01 per share ("Common Stock") 70000 $3.05 6,586,874.0000 0 1.07% 0.00%
July 1, 2024 Kiessling Heather Chief Financial Officer A Common Stock 400000 $0.00 412,500.0000 0 3200.00% 0.00%
April 30, 2024 Ryan Robert John Andrew Not found P Common Stock 3734 $3.72 559,602.0000 0 0.67% 0.00%
April 29, 2024 Ryan Robert John Andrew Not found P Common Stock 4313 $3.20 555,868.0000 0 0.78% 0.00%
April 30, 2024 Ryan Robert John Andrew Not found P Common Stock 5000 $3.36 564,602.0000 0 0.89% 0.00%
April 30, 2024 Ryan Robert John Andrew Not found P Common Stock 7500 $3.34 572,102.0000 0 1.33% 0.00%
April 26, 2024 Ryan Robert John Andrew Not found P Common Stock 5000 $3.48 551,555.0000 0 0.91% 0.00%
April 25, 2024 Ryan Robert John Andrew Not found P Common Stock 2500 $3.46 544,555.0000 0 0.46% 0.00%
April 25, 2024 Ryan Robert John Andrew Not found P Common Stock 5000 $3.40 542,055.0000 0 0.93% 0.00%
April 25, 2024 Ryan Robert John Andrew Not found P Common Stock 2000 $3.40 546,555.0000 0 0.37% 0.00%
Oct. 23, 2023 Gorley Michael Director A Common Stock 93458 $0.00 93,458.0000 0 9999.99% 0.00%
Jan. 29, 2024 Ryan Robert John Andrew Director P Common Stock 15596 $2.35 537,055.0000 0 2.99% 0.00%
Jan. 25, 2024 Ryan Robert John Andrew Director P Common Stock 100 $2.54 521,459.0000 0 0.02% 0.00%
Jan. 17, 2024 Ryan Robert John Andrew Director P Common Stock 100 $1.91 521,359.0000 0 0.02% 0.00%
Jan. 16, 2024 Ryan Robert John Andrew Director P Common Stock 2550 $1.92 521,259.0000 0 0.49% 0.00%
Jan. 14, 2024 Ryan Robert John Andrew Director A Common Stock 50251 $0.00 518,709.0000 0 10.73% 0.00%
Aug. 10, 2023 Moore Duncan Not found A Common Stock 200000 $0.00 750,000.0000 0 36.36% 0.00%
Oct. 26, 2023 Wider Todd Not found P Common Stock 94844 $0.96 494,844.0000 0 23.71% 0.00%
Oct. 26, 2023 Donfeld Joshua Jay Not found P Common Stock 104167 $0.96 1,104,167.0000 0 10.42% 0.00%
Oct. 26, 2023 Moore Duncan Not found P Common Stock 104167 $0.96 854,167.0000 0 13.89% 0.00%
June 29, 2023 Moore Duncan Not found P Common Stock 50000 $0.50 500,000.0000 0 11.11% 0.00%
June 29, 2023 Moore Duncan Not found P Common Stock 50000 $0.50 550,000.0000 0 10.00% 0.00%
May 18, 2023 Moore Duncan Not found P Common Stock 20000 $0.31 450,000.0000 0 4.65% 0.00%
May 10, 2023 Moore Duncan Not found P Common Stock 10000 $0.50 430,000.0000 0 2.38% 0.00%
April 6, 2023 Moore Duncan Not found P Common Stock 20000 $1.00 420,000.0000 0 5.00% 0.00%
March 1, 2023 Mann Paul Elliot Chief Executive Officer A Common Stock 718143 $0.00 5,805,643.0000 0 14.12% 0.00%
March 1, 2023 Vasnetsov Sergey Not found A Common Stock 538607 $0.00 3,838,607.0000 0 16.32% 0.00%
Dec. 30, 2022 Vasnetsov Sergey Not found A Common Stock 500000 $0.00 3,300,000.0000 0 17.86% 0.00%
Dec. 30, 2022 Mann Paul Elliot Chief Executive Officer A Common Stock 1000000 $0.00 5,087,500.0000 0 24.46% 0.00%
Dec. 30, 2022 Ainscow Robert Chief Financial Officer A Common Stock 50000 $0.00 900,000.0000 0 5.88% 0.00%