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ASPI

ASP Isotopes Inc. Common Stock

NASDAQ · Basic Materials · Chemicals · US

$4.20
+7.69%
Ask drillr
0
Insider buys (3m)
5
Insider sells (3m)
-$1.3M
Net value (3m)
-37.8%
Price return (3m)
Form 4 filings
DateInsiderActivitySharesPrice
Jul 2, 2026Kiessling Heather · officer: Chief Financial OfficerSale23,124$6.28
Jul 2, 2026Ainscow Donald George · officer: EVP, Gen Counsel, SecretarySale100,000$6.14
Jul 1, 2026Wider Todd · directorSale50,000$6.25
Jul 1, 2026Gorley Michael · directorSale30,000$6.27
Jun 10, 2026Ainscow Robert · officer: COOSale8,438$7.00
Jun 3, 2026Kiessling Heather · officer: Chief Financial OfficerA-Award840,000$0.00
Jun 3, 2026Ainscow Donald George · officer: EVP, Gen Counsel, SecretaryA-Award400,000$0.00
Jun 3, 2026Mann Paul Elliot · director, officer: Chairman and CEOSale83,758$7.88
Jun 3, 2026Mann Paul Elliot · director, officer: Chairman and CEOSale83,759$7.76
Jun 3, 2026Ainscow Robert · officer: Chief Operating OfficerA-Award800,000$0.00
Jun 3, 2026Mann Paul Elliot · director, officer: Chairman and CEOA-Award2,233,555$0.00
Apr 17, 2026Ainscow Robert · officer: COOSale22,500$5.21
Apr 17, 2026Moore Duncan · directorA-Award25,469$0.00
Apr 17, 2026Moore Duncan · directorSale11,642$5.21
Apr 17, 2026Moore Duncan · directorA-Award36,548$0.00
Apr 17, 2026Kiessling Heather · officer: Chief Financial OfficerSale23,124$5.48
Apr 13, 2026Ainscow Robert · officer: COOSale25,000$4.51
Mar 6, 2026Ainscow Robert · officer: COOSale8,438$5.44
Mar 2, 2026Mann Paul Elliot · officer: Executive ChairmanSale162,153$5.44
Dec 29, 2025Kiessling Heather · officer: Chief Financial OfficerSale80,000$5.80
Dec 22, 2025Wider Todd · directorA-Award36,548$0.00
Dec 22, 2025Gorley Michael · directorA-Award36,548$0.00
Dec 22, 2025Hunter Ralph L. JR · directorA-Award36,548$0.00
Dec 22, 2025Ryan Robert John Andrew · directorA-Award36,548$0.00
Dec 11, 2025Ainscow Robert · officer: Interim CEO and COOSale8,438$6.20
Dec 3, 2025Mann Paul Elliot · director, officer: Executive ChairmanSale162,153$5.75
Nov 28, 2025Hunter Ralph L. JR · directorA-Award10,470$0.00
Nov 28, 2025Ainscow Donald George · officer: EVP, Gen Counsel, SecretaryA-Award400,000$0.00
Nov 28, 2025Mann Paul Elliot · director, officer: Executive OfficerSale50,000$5.77
Nov 28, 2025Mann Paul Elliot · director, officer: Executive OfficerSale112,500$7.51
Institutional positioning

13F filings over the trailing two quarters

New 84Increased 158Reduced 94Sold out 28
FilerActionSharesFiled
BlackRock, Inc.Increased9,217,198Aug 7, 2026
BLACKROCK, INC.Increased8,328,144May 13, 2026
ENCOMPASS CAPITAL ADVISORS LLCNew Position6,912,054May 15, 2026
Encompass Capital Advisors LLCReduced6,561,754Aug 14, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLPIncreased5,332,840May 15, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position5,060,464May 15, 2026
VANGUARD CAPITAL MANAGEMENT LLCReduced4,982,953Aug 13, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLPReduced4,552,753Aug 14, 2026
ROVIDA INVESTMENT MANAGEMENT LTDUnchanged4,100,000May 19, 2026
Rovida Investment Management LtdUnchanged4,100,000Aug 5, 2026
UBS Group AGIncreased3,754,533Aug 13, 2026
UBS GROUP AGIncreased2,991,709May 5, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased2,945,901Aug 12, 2026
Alyeska Investment Group, L.P.Increased2,843,503Aug 14, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased2,740,464May 15, 2026

Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Jul 2, 2026