Heather Kiessling plan to sell securities of ASP Isotopes, Inc. under Form 144

Heather Kiessling filed Form 144 to notify SEC of plan to sell 46248 units of ASP Isotopes, Inc. securities around 2026-04-15, with aggregate market value of $231,240.00. The total outstanding units is 125903447.0. The amount planned to be sold represents 0.04% of total outstanding units;