Kiessling Heather sold ASPI
April 15, 2026 · Form 4 insider transaction
Kiessling Heather sold 23,124 shares of ASP Isotopes Inc. at $5.48 per share, a transaction worth $126.7K. The trade was recorded as open-market sale under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4.
Footnotes
Represents "sell to cover" sales effected pursuant to a Rule 10b5-1 trading plan adopted by the filing person on December 19, 2025 to cover tax withholding obligations in connection with the vesting of restricted stock awards.; The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.12 to $5.71, 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 2.