ASP Isotopes Inc. Common Stock (ASPI) Insider Trading

Over the last 3 months, ASPI insiders made 0 open-market buys and 6 sales, a net sale of -$1.7M (SEC Form 4). Over the last 6 months, 172 institutions increased and 77 reduced their position (13F).

Insider Activity

Sentiment
0/100
Buys (3m)
0
Sells (3m)
6
Net (3m)
-$1.7M
Insider trades by month Buys Sells
Oct
Nov
Dec
Mar
Apr
Jun
Context3-month price +56%Institutions accumulating (13F)
DateInsiderTypeSharesPrice
Jun 3, 2026Kiessling Heatherofficer: Chief Financial OfficerGrant840,000
Jun 3, 2026Mann Paul Elliotdirector, officer: Chairman and CEOGrant2,233,555
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, 2026Ainscow Donald Georgeofficer: EVP, Gen Counsel, SecretaryGrant400,000
Apr 17, 2026Ainscow Robertofficer: COOSell22,500$5.21
Apr 17, 2026Moore DuncandirectorSell11,642$5.21
Apr 17, 2026Kiessling Heatherofficer: Chief Financial OfficerSell23,124$5.48
Apr 17, 2026Moore DuncandirectorGrant25,469
Apr 17, 2026Moore DuncandirectorGrant36,548
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, 2025Ainscow Donald Georgeofficer: EVP, Gen Counsel, SecretaryGrant400,000
Nov 28, 2025Hunter Ralph L. JRdirectorGrant10,470
Nov 28, 2025Ainscow Robertofficer: Interim CEO and COOSell25,000$5.77
Nov 28, 2025Mann Paul Elliotdirector, officer: Executive OfficerSell50,000$5.77
Nov 28, 2025Mann Paul Elliotdirector, officer: Executive OfficerSell112,500$7.51
Nov 19, 2025Ainscow Robertofficer: Interim CEO and COOSell67,500$7.51
Nov 14, 2025Wider TodddirectorGrant25,469
Oct 16, 2025Ainscow Robertofficer: Interim CEO and COOSell22,500$13.60
Oct 3, 2025Wider TodddirectorOption96,000$2.00

Source: ASPI SEC Form 4 filings, latest Jun 3, 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
172
New positions
87
Reduced
77
Sold out
66
Largest moves
InstitutionActionSharesFiled
BLACKROCK, INC.Increased8.3MMay 13, 2026
ENCOMPASS CAPITAL ADVISORS LLCIncreased6.9MMay 15, 2026
BLACKROCK, INC.Increased6.8MFeb 12, 2026
VANGUARD GROUP INCIncreased6.4MJan 29, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position5.1MMay 15, 2026
ALYESKA INVESTMENT GROUP, L.P.Increased4.9MFeb 13, 2026
ROVIDA INVESTMENT MANAGEMENT LTDIncreased4.1MFeb 10, 2026
ROVIDA INVESTMENT MANAGEMENT LTDUnchanged4.1MMay 19, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLPIncreased3.0MMay 15, 2026
UBS GROUP AGIncreased2.8MMay 5, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased2.7MMay 15, 2026
ALYESKA INVESTMENT GROUP, L.P.Reduced2.7MMay 15, 2026
UBS GROUP AGIncreased2.4MJan 29, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased2.4MFeb 9, 2026
STATE STREET CORPIncreased2.3MMay 15, 2026

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