Kiessling Heather sold ASPI
October 16, 2026 · Form 4 insider transaction
Kiessling Heather sold 21,830 shares of ASP Isotopes Inc. at $2.19 per share, a transaction worth $47.8K. The trade was recorded as open-market sale and disclosed on an SEC Form 4.
Direction
Disposed (sell-side)
Shares
21,830
Price
$2.19
Total value
$47.8K
InsiderKiessling Heather
RoleOfficer
CompanyASP Isotopes Inc. (ASPI)
SecurityCommon Stock
Transaction codeS: Open-market sale
Transaction dateOctober 16, 2026
Filing dateOctober 21, 2026
Shares owned after1,504,422
OwnershipDirect
10b5-1 planNo
AmendedNo
Footnotes
Represents shares automatically sold by ASP Isotopes Inc.(the "Company") on behalf of the reporting person pursuant to a mandatory sell-to-cover provision in the award agreement required to cover minimum statutory tax withholding obligations. The sale does not represent a discretionary trade by the reporting person.