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ASPI Insider Trading

Insider Ownership Percentage: 14.40%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $11,310,723.71

ASP Isotopes Insider Trading History Chart

This chart shows the insider buying and selling history at ASP Isotopes by year and by quarter.

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ASP Isotopes Share Price & Price History

Current Price: $5.73
Price Change: ▼ Price Decrease of -0.09 (-1.55%)
As of 02/9/2026 05:00 PM ET

This chart shows the closing price history over time for ASPI up to the past year.

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Days: 30 | 90 | 365

ASP Isotopes Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
12/18/2025Heather KiesslingCFOSell80,000$5.80$464,000.00732,500View SEC Filing Icon  
12/8/2025Robert AinscowCEOSell8,438$6.20$52,315.601,546,255View SEC Filing Icon  
12/1/2025Paul Elliot MannChairmanSell162,153$5.75$932,379.757,759,538View SEC Filing Icon  
11/25/2025Paul Elliot MannInsiderSell50,000$5.77$288,500.007,921,691View SEC Filing Icon  
11/25/2025Robert AinscowCEOSell25,000$5.77$144,250.001,554,693View SEC Filing Icon  
11/17/2025Paul Elliot MannInsiderSell112,500$7.51$844,875.007,971,691View SEC Filing Icon  
11/17/2025Robert AinscowCEOSell67,500$7.51$506,925.001,579,693View SEC Filing Icon  
10/14/2025Robert AinscowCEOSell22,500$13.60$306,000.001,647,193View SEC Filing Icon  
9/30/2025Michael GorleyDirectorSell64,000$9.75$624,000.0081,360View SEC Filing Icon  
9/15/2025Todd WiderDirectorSell74,108$8.76$649,186.08710,230View SEC Filing Icon  
9/9/2025Paul Elliot MannCEOSell81,077$8.39$680,236.038,084,191View SEC Filing Icon  
9/8/2025Paul Elliot MannCEOSell81,076$8.53$691,578.287,234,378View SEC Filing Icon  
9/8/2025Robert AinscowCOOSell8,438$8.53$71,976.141,411,554View SEC Filing Icon  
8/29/2025Duncan MooreDirectorSell75,000$9.28$696,000.00994,553View SEC Filing Icon  
4/17/2025Paul Elliot MannCEOSell316,666$5.62$1,779,662.927,315,454View SEC Filing Icon  
4/17/2025Robert AinscowCOOSell66,668$5.62$374,674.161,419,992View SEC Filing Icon  
4/15/2025Paul Elliot MannCEOSell316,667$5.75$1,820,835.257,948,787View SEC Filing Icon  
4/15/2025Robert AinscowCOOSell66,666$5.75$383,329.501,553,326View SEC Filing Icon  
7/10/2024Ak Jensen Investment ManagemenMajor ShareholderBuy61,849$3.40$210,286.606,678,723View SEC Filing Icon  
7/8/2024Ak Jensen Investment ManagemenMajor ShareholderBuy70,000$3.05$213,500.006,586,874View SEC Filing Icon  
4/29/2024John Andrew RyanDirectorBuy4,313$3.20$13,801.60555,868View SEC Filing Icon  
4/25/2024John Andrew RyanDirectorBuy9,500$3.42$32,490.00546,555View SEC Filing Icon  
1/29/2024John Andrew RyanDirectorBuy15,596$2.35$36,650.60537,055View SEC Filing Icon  
1/25/2024John Andrew RyanDirectorBuy100$2.54$254.00521,459View SEC Filing Icon  
1/16/2024John Andrew RyanDirectorBuy2,550$1.92$4,896.00521,259View SEC Filing Icon  
10/26/2023Todd WiderDirectorBuy94,844$0.96$91,050.24494,844View SEC Filing Icon  
6/29/2023Duncan MooreDirectorBuy100,000$0.50$50,000.00550,000View SEC Filing Icon  
5/10/2023Duncan MooreDirectorBuy10,000$0.50$5,000.00430,000View SEC Filing Icon  
4/6/2023Duncan MooreDirectorBuy20,000$1.00$20,000.00420,000View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for ASP Isotopes (NASDAQ:ASPI)

16.80% of ASP Isotopes stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at ASPI by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

ASP Isotopes Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
2/9/2026Geode Capital Management LLC2,384,066$12.76M0.0%+28.0%2.151%Search for SEC Filing on Google Icon
2/9/2026Penn Capital Management Company LLC126,916$0.68M0.1%-37.2%0.115%Search for SEC Filing on Google Icon
2/9/2026Jefferies Financial Group Inc.87,260$0.47M0.0%+120.8%0.079%Search for SEC Filing on Google Icon
2/6/2026Leonteq Securities AG28,515$0.15M0.0%N/A0.026%Search for SEC Filing on Google Icon
2/6/2026Rathbones Group PLC399,599$2.14M0.0%+68.6%0.361%Search for SEC Filing on Google Icon
2/6/2026IFP Advisors Inc9,000$48K0.0%N/A0.008%Search for SEC Filing on Google Icon
2/6/2026GSA Capital Partners LLP329,488$1.76M0.2%+2.9%0.297%Search for SEC Filing on Google Icon
2/6/2026ProShare Advisors LLC16,904$90K0.0%+29.0%0.015%Search for SEC Filing on Google Icon
2/5/2026WIM INVESTMENT MANAGEMENT Ltd601,400$3.22M0.8%N/A0.543%Search for SEC Filing on Google Icon
2/3/2026Canal Insurance CO100,000$0.54M0.1%+233.3%0.090%Search for SEC Filing on Google Icon
2/3/2026SBI Securities Co. Ltd.152,120$0.81M0.0%+196.2%0.137%Search for SEC Filing on Google Icon
1/30/2026Pekin Hardy Strauss Inc.26,700$0.14M0.0%+16.3%0.024%Search for SEC Filing on Google Icon
1/29/2026Pictet Asset Management Holding SA11,334$61K0.0%N/A0.010%Search for SEC Filing on Google Icon
1/29/2026Inscription Capital LLC14,360$77K0.0%N/A0.013%Search for SEC Filing on Google Icon
1/29/2026UBS Group AG2,406,457$12.88M0.0%+150.3%2.171%Search for SEC Filing on Google Icon
1/29/2026Sanctuary Advisors LLC20,150$0.11M0.0%-29.4%0.018%Search for SEC Filing on Google Icon
1/28/2026Arizona State Retirement System21,676$0.12M0.0%N/A0.020%Search for SEC Filing on Google Icon
1/27/2026Zurcher Kantonalbank Zurich Cantonalbank 23,600$0.13M0.0%N/A0.021%Search for SEC Filing on Google Icon
1/26/2026Patriot Financial Group Insurance Agency LLC21,825$0.12M0.0%N/A0.020%Search for SEC Filing on Google Icon
1/26/2026PFG Investments LLC181,800$0.97M0.0%+663.9%0.164%Search for SEC Filing on Google Icon
1/23/2026Farther Finance Advisors LLC124,563$0.67M0.0%+12.0%0.112%Search for SEC Filing on Google Icon
1/22/2026MH & Associates Securities Management Corp ADV48,666$0.26M0.2%N/A0.044%Search for SEC Filing on Google Icon
1/21/2026Rathbones Group PLC399,599$2.14M0.0%+68.6%0.361%Search for SEC Filing on Google Icon
1/16/2026FNY Investment Advisers LLC85,100$0.46M0.1%+580.8%0.077%Search for SEC Filing on Google Icon
1/14/2026Exchange Traded Concepts LLC1,400,314$7.49M0.1%+16.1%1.263%Search for SEC Filing on Google Icon
1/1/2026Tudor Investment Corp ET AL460,685$4.43M0.0%+37.5%0.416%Search for SEC Filing on Google Icon
12/15/2025FNY Investment Advisers LLC12,500$0.12M0.0%+1,137.6%0.011%Search for SEC Filing on Google Icon
12/9/2025Tudor Investment Corp ET AL460,685$4.43M0.0%+37.5%0.416%Search for SEC Filing on Google Icon
11/24/2025Penn Capital Management Company LLC202,144$1.95M0.1%+983.0%0.182%Search for SEC Filing on Google Icon
11/19/2025Caitong International Asset Management Co. Ltd12,622$0.12M0.1%+331.2%0.014%Search for SEC Filing on Google Icon
11/18/2025Advisory Services Network LLC31,238$0.30M0.0%+125.8%0.033%Search for SEC Filing on Google Icon
11/17/2025NewEdge Advisors LLC21,900$0.21M0.0%N/A0.023%Search for SEC Filing on Google Icon
11/17/2025XTX Topco Ltd139,782$1.35M0.1%+478.7%0.150%Search for SEC Filing on Google Icon
11/17/2025Alyeska Investment Group L.P.2,822,695$27.15M0.1%-32.5%3.022%Search for SEC Filing on Google Icon
11/17/2025Verition Fund Management LLC363,765$3.50M0.0%+417.7%0.389%Search for SEC Filing on Google Icon
11/17/2025Scientech Research LLC64,388$0.62M0.2%-7.0%0.069%Search for SEC Filing on Google Icon
11/17/2025Sig Brokerage LP20,912$0.20M0.0%N/A0.022%Search for SEC Filing on Google Icon
11/17/2025Prelude Capital Management LLC98,396$0.95M0.1%-6.7%0.105%Search for SEC Filing on Google Icon
11/17/2025Mariner LLC41,030$0.40M0.0%+43.2%0.044%Search for SEC Filing on Google Icon
11/17/2025Mercer Global Advisors Inc. ADV21,056$0.20M0.0%+8.3%0.023%Search for SEC Filing on Google Icon
11/17/2025National Bank of Canada FI30,150$0.29M0.0%+1,107.9%0.032%Search for SEC Filing on Google Icon
11/17/2025Millennium Management LLC245,985$2.37M0.0%+662.0%0.263%Search for SEC Filing on Google Icon
11/17/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.35,598$0.34M0.0%+12.4%0.038%Search for SEC Filing on Google Icon
11/17/2025Moore Capital Management LP200,000$1.92M0.0%N/A0.214%Search for SEC Filing on Google Icon
11/17/2025Brevan Howard Capital Management LP61,120$0.59M0.0%N/A0.065%Search for SEC Filing on Google Icon
11/17/2025Centiva Capital LP26,244$0.25M0.0%N/A0.028%Search for SEC Filing on Google Icon
11/17/2025Bank of America Corp DE128,283$1.23M0.0%-29.0%0.137%Search for SEC Filing on Google Icon
11/14/2025Schonfeld Strategic Advisors LLC199,847$1.92M0.0%N/A0.214%Search for SEC Filing on Google Icon
11/14/2025Creative Planning316,765$3.05M0.0%+83.3%0.339%Search for SEC Filing on Google Icon
11/14/2025Virtu Financial LLC120,131$1.16M0.1%+28.8%0.129%Search for SEC Filing on Google Icon
11/14/2025Southport Management L.L.C.30,000$0.29M1.2%N/A0.032%Search for SEC Filing on Google Icon
11/14/2025Two Sigma Investments LP337,245$3.24M0.0%-1.7%0.361%Search for SEC Filing on Google Icon
11/14/2025Concentric Capital Strategies LP218,054$2.10M0.1%N/A0.233%Search for SEC Filing on Google Icon
11/14/2025Squarepoint Ops LLC624,807$6.01M0.0%N/A0.669%Search for SEC Filing on Google Icon
11/13/2025Jump Financial LLC934,500$8.99M0.1%N/A1.000%Search for SEC Filing on Google Icon
11/13/2025Marshall Wace LLP1,279,121$12.31M0.0%+3,669.1%1.369%Search for SEC Filing on Google Icon
11/13/2025UBS Group AG961,292$9.25M0.0%-32.7%1.029%Search for SEC Filing on Google Icon
11/13/2025BNP Paribas Financial Markets14,851$0.14M0.0%+167.6%0.016%Search for SEC Filing on Google Icon
11/13/2025Capital Research Global Investors2,043,567$19.66M0.0%-28.7%2.188%Search for SEC Filing on Google Icon
11/13/2025Legal & General Group Plc8,377$81K0.0%+30.4%0.009%Search for SEC Filing on Google Icon
11/13/2025Russell Investments Group Ltd.126,578$1.22M0.0%+1,243.1%0.136%Search for SEC Filing on Google Icon
11/13/2025Jefferies Financial Group Inc.39,526$0.38M0.0%N/A0.042%Search for SEC Filing on Google Icon
11/13/2025Rathbones Group PLC237,064$2.28M0.0%+13.9%0.254%Search for SEC Filing on Google Icon
11/13/2025SPX Gestao de Recursos Ltda109,600$1.05M0.1%N/A0.117%Search for SEC Filing on Google Icon
11/12/2025Rovida Investment Management Ltd3,200,000$30.69M3.5%+45.5%3.426%Search for SEC Filing on Google Icon
11/12/2025Cresset Asset Management LLC13,606$0.13M0.0%N/A0.015%Search for SEC Filing on Google Icon
11/12/2025Quantbot Technologies LP3,560$34K0.0%N/A0.004%Search for SEC Filing on Google Icon
11/12/2025Close Asset Management Ltd7,500$72K0.0%N/A0.008%Search for SEC Filing on Google Icon
11/12/2025Intech Investment Management LLC34,362$0.33M0.0%+33.4%0.037%Search for SEC Filing on Google Icon
11/10/2025Telemark Asset Management LLC1,325,000$12.75M1.2%-7.0%1.418%Search for SEC Filing on Google Icon
11/10/2025Pekin Hardy Strauss Inc.22,950$0.22M0.0%N/A0.025%Search for SEC Filing on Google Icon
11/7/2025GSA Capital Partners LLP320,236$3.08M0.3%-16.7%0.343%Search for SEC Filing on Google Icon
11/7/2025Vanguard Group Inc.4,516,763$43.45M0.0%+37.9%4.835%Search for SEC Filing on Google Icon
11/6/2025Caprock Group LLC296,000$2.75M0.1%N/A0.317%Search for SEC Filing on Google Icon
11/6/2025Rhumbline Advisers102,287$0.98M0.0%+29.5%0.110%Search for SEC Filing on Google Icon
11/6/2025ProShare Advisors LLC13,101$0.13M0.0%+12.4%0.014%Search for SEC Filing on Google Icon
11/5/2025SBI Securities Co. Ltd.51,351$0.49M0.0%+141.3%0.055%Search for SEC Filing on Google Icon
11/4/2025IMC Chicago LLC33,228$0.32M0.0%+154.1%0.036%Search for SEC Filing on Google Icon
11/3/2025AlphaQuest LLC28,272$0.27M0.0%-18.6%0.030%Search for SEC Filing on Google Icon
10/31/2025PFG Investments LLC23,800$0.23M0.0%-10.2%0.025%Search for SEC Filing on Google Icon
10/27/2025Canal Insurance CO30,000$0.29M0.1%N/A0.032%Search for SEC Filing on Google Icon
10/23/2025Nisa Investment Advisors LLC45,238$0.44M0.0%+4,258.2%0.048%Search for SEC Filing on Google Icon
10/22/2025Chicago Capital LLC12,000$0.12M0.0%N/A0.013%Search for SEC Filing on Google Icon
10/14/2025Farther Finance Advisors LLC111,176$1.07M0.0%+15.8%0.121%Search for SEC Filing on Google Icon
10/14/2025Exchange Traded Concepts LLC1,206,280$11.60M0.1%-7.5%1.312%Search for SEC Filing on Google Icon
10/10/2025Sara Bay Financial903,103$8.69M2.4%N/A0.983%Search for SEC Filing on Google Icon
10/9/2025Voya Investment Management LLC13,507$0.13M0.0%-14.7%0.015%Search for SEC Filing on Google Icon
8/19/2025B. Riley Wealth Advisors Inc.16,380$0.12M0.0%N/A0.020%Search for SEC Filing on Google Icon
8/19/2025Marex Group plc75,000$0.55M0.0%N/A0.089%Search for SEC Filing on Google Icon
8/16/2025FORA Capital LLC14,569$0.11M0.0%N/A0.017%Search for SEC Filing on Google Icon
8/15/2025Tower Research Capital LLC TRC 10,890$80K0.0%+96.7%0.013%Search for SEC Filing on Google Icon
8/15/2025Shay Capital LLC43,500$0.32M0.0%N/A0.052%Search for SEC Filing on Google Icon
8/15/2025BNP Paribas Financial Markets5,549$41K0.0%+84.9%0.007%Search for SEC Filing on Google Icon
8/15/2025AWM Investment Company Inc.3,931,186$28.93M3.2%-12.9%4.686%Search for SEC Filing on Google Icon
8/14/2025The Manufacturers Life Insurance Company 20,840$0.15M0.0%+9.9%0.025%Search for SEC Filing on Google Icon
8/13/2025Bosun Asset Management LLC175,138$1.29M0.4%+696.1%0.209%Search for SEC Filing on Google Icon
8/13/2025Diametric Capital LP269,527$1.98M1.1%-31.4%0.321%Search for SEC Filing on Google Icon
8/13/2025Marshall Wace LLP33,937$0.25M0.0%-80.9%0.040%Search for SEC Filing on Google Icon
8/13/2025Invesco Ltd.471,219$3.47M0.0%+2,205.0%0.562%Search for SEC Filing on Google Icon
8/13/2025OMERS ADMINISTRATION Corp121,800$0.90M0.0%N/A0.145%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
ASP Isotopes logo
ASP Isotopes Inc., a development stage advanced materials company, focuses on the production, distribution, marketing, and sale of isotopes. It engages in the production and commercialization of Molybdenum-100, a non-radioactive isotope for the medical industry; Carbon-14; and Silicon-28. The company is also developing Quantum Enrichment technology to produce Ytterbium-176, Nickel-64, Lithium 6, Lithium7, and Uranium-235. ASP Isotopes Inc. was incorporated in 2021 and is headquartered in Washington, District Of Columbia.
Read More on ASP Isotopes

Today's Range

Now: $5.73
Low: $5.45
High: $5.80

50 Day Range

MA: $6.45
Low: $5.22
High: $8.48

52 Week Range

Now: $5.73
Low: $3.65
High: $14.49

Volume

3,656,089 shs

Average Volume

6,212,703 shs

Market Capitalization

$635.11 million

P/E Ratio

N/A

Dividend Yield

N/A

Beta

3.47

Who are the company insiders with the largest holdings of ASP Isotopes?

ASP Isotopes' top insider shareholders include:
  1. Paul Elliot Mann (CEO)
  2. Paul Elliot Mann (Insider)
  3. Paul Elliot Mann (Chairman)
  4. Ak Jensen Investment Managemen (Major Shareholder)
  5. Robert Ainscow (CEO)
  6. Robert Ainscow (COO)
  7. Duncan Moore (Director)
  8. Heather Kiessling (CFO)
  9. Todd Wider (Director)
  10. Robert John Andrew Ryan (Director)
  11. Michael Gorley (Director)
Learn More about top insider investors at ASP Isotopes.

Who are the major institutional investors of ASP Isotopes?

ASP Isotopes' top institutional investors include:
  1. UBS Group AG — 2.17%
  2. Geode Capital Management LLC — 2.15%
  3. Exchange Traded Concepts LLC — 1.26%
  4. WIM INVESTMENT MANAGEMENT Ltd — 0.54%
  5. IMC Chicago LLC — 0.00%
  6. Rathbones Group PLC — 0.36%
Learn More about top institutional investors of ASP Isotopes stock.

Which institutional investors are selling ASP Isotopes stock?

Within the previous quarter, ASPI stock was sold by these institutional investors:
  1. Penn Capital Management Company LLC
  2. Sanctuary Advisors LLC
Within the previous year, company insiders that have sold ASP Isotopes company stock include:
  1. Paul Elliot Mann (CEO)
  2. Paul Elliot Mann (Insider)
  3. Paul Elliot Mann (Chairman)
  4. Ak Jensen Investment Managemen (Major Shareholder)
  5. Robert Ainscow (CEO)
  6. Robert Ainscow (COO)
  7. Duncan Moore (Director)
  8. Heather Kiessling (CFO)
  9. Todd Wider (Director)
Learn More investors selling ASP Isotopes stock.

Which institutional investors are buying ASP Isotopes stock?

Within the previous quarter, ASPI stock was purchased by institutional investors including:
  1. UBS Group AG
  2. WIM INVESTMENT MANAGEMENT Ltd
  3. Geode Capital Management LLC
  4. IMC Chicago LLC
  5. Exchange Traded Concepts LLC
  6. Rathbones Group PLC
  7. Rathbones Group PLC
  8. PFG Investments LLC
In the last year, these company insiders have bought ASP Isotopes stock:
  1. Paul Elliot Mann (CEO)
  2. Paul Elliot Mann (Insider)
Learn More investors buying ASP Isotopes stock.