Kiessling Heather sold ASPI
December 18, 2025 · Form 4 insider transaction
Kiessling Heather sold 80,000 shares of ASP Isotopes Inc. at $5.80 per share, a transaction worth $463.8K. The trade was recorded as open-market sale and disclosed on an SEC Form 4.
Direction
Disposed (sell-side)
Shares
80,000
Price
$5.80
Total value
$463.8K
InsiderKiessling Heather
RoleOfficer
CompanyASP Isotopes Inc. (ASPI)
SecurityCommon Stock
Transaction codeS: Open-market sale
Transaction dateDecember 18, 2025
Filing dateDecember 29, 2025
Shares owned after732,500
OwnershipDirect
10b5-1 planNo
AmendedNo
Footnotes
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.73 to $5.885, inclusive. The reporting person undertakes to provide ASP Isotopes Inc. (the "Company"), any stockholder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in Footnote 1.