ASP Isotopes Inc. Common Stock (ASPI) Insider Trading

Over the last 3 months, ASPI insiders made 0 open-market buys and 5 sales, a net sale of -$1.3M (SEC Form 4). Over the last 6 months, 159 institutions increased and 94 reduced their position (13F).

Insider Activity

Sentiment
0/100
Buys (3m)
0
Sells (3m)
5
Net (3m)
-$1.3M
Insider trades by month Buys Sells
Nov
Dec
Mar
Apr
Jun
Jul
Context3-month price -48.4%Institutions accumulating (13F)
DateInsiderTypeSharesPrice
Jul 2, 2026Kiessling Heatherofficer: Chief Financial OfficerSell23,124$6.28
Jul 2, 2026Ainscow Donald Georgeofficer: EVP, Gen Counsel, SecretarySell100,000$6.14
Jul 1, 2026Wider TodddirectorSell50,000$6.25
Jul 1, 2026Gorley MichaeldirectorSell30,000$6.27
Jun 10, 2026Ainscow Robertofficer: COOSell8,438$7.00
Jun 3, 2026Kiessling Heatherofficer: Chief Financial OfficerGrant840,000
Jun 3, 2026Ainscow Donald Georgeofficer: EVP, Gen Counsel, SecretaryGrant400,000
Jun 3, 2026Mann Paul Elliotdirector, officer: Chairman and CEOSell83,758$7.88
Jun 3, 2026Mann Paul Elliotdirector, officer: Chairman and CEOSell83,759$7.76
Jun 3, 2026Ainscow Robertofficer: Chief Operating OfficerGrant800,000
Jun 3, 2026Mann Paul Elliotdirector, officer: Chairman and CEOGrant2,233,555
Apr 17, 2026Ainscow Robertofficer: COOSell22,500$5.21
Apr 17, 2026Moore DuncandirectorGrant25,469
Apr 17, 2026Moore DuncandirectorSell11,642$5.21
Apr 17, 2026Moore DuncandirectorGrant36,548
Apr 17, 2026Kiessling Heatherofficer: Chief Financial OfficerSell23,124$5.48
Apr 13, 2026Ainscow Robertofficer: COOSell25,000$4.51
Mar 6, 2026Ainscow Robertofficer: COOSell8,438$5.44
Mar 2, 2026Mann Paul Elliotofficer: Executive ChairmanSell162,153$5.44
Dec 29, 2025Kiessling Heatherofficer: Chief Financial OfficerSell80,000$5.80
Dec 22, 2025Wider TodddirectorGrant36,548
Dec 22, 2025Gorley MichaeldirectorGrant36,548
Dec 22, 2025Hunter Ralph L. JRdirectorGrant36,548
Dec 22, 2025Ryan Robert John AndrewdirectorGrant36,548
Dec 11, 2025Ainscow Robertofficer: Interim CEO and COOSell8,438$6.20
Dec 3, 2025Mann Paul Elliotdirector, officer: Executive ChairmanSell162,153$5.75
Nov 28, 2025Hunter Ralph L. JRdirectorGrant10,470
Nov 28, 2025Ainscow Donald Georgeofficer: EVP, Gen Counsel, SecretaryGrant400,000
Nov 28, 2025Mann Paul Elliotdirector, officer: Executive OfficerSell50,000$5.77
Nov 28, 2025Mann Paul Elliotdirector, officer: Executive OfficerSell112,500$7.51

Source: ASPI SEC Form 4 filings, latest Jul 2, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their ASPI positions over the last 6 months (SEC Form 13F).

Increased
159
New positions
84
Reduced
94
Sold out
28
Largest moves
InstitutionActionSharesFiled
BlackRock, Inc.Increased9.2MAug 7, 2026
BLACKROCK, INC.Increased8.3MMay 13, 2026
ENCOMPASS CAPITAL ADVISORS LLCNew Position6.9MMay 15, 2026
Encompass Capital Advisors LLCReduced6.6MAug 14, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLPIncreased5.3MMay 15, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position5.1MMay 15, 2026
VANGUARD CAPITAL MANAGEMENT LLCReduced5.0MAug 13, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLPReduced4.6MAug 14, 2026
ROVIDA INVESTMENT MANAGEMENT LTDUnchanged4.1MMay 19, 2026
Rovida Investment Management LtdUnchanged4.1MAug 5, 2026
UBS Group AGIncreased3.8MAug 13, 2026
UBS GROUP AGIncreased3.0MMay 5, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased2.9MAug 12, 2026
Alyeska Investment Group, L.P.Increased2.8MAug 14, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased2.7MMay 15, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.