SEC Filing Summary for ASP Isotopes Inc.

Heather Kiessling, Chief Financial Officer of ASP Isotopes Inc., reported a sale of 23,124 shares of Common Stock on April 15, 2026. The sale was executed as part of a Rule 10b5-1 trading plan to cover tax withholding obligations related to restricted stock awards. The shares were sold at a weighted average price of $5.478, with individual sales ranging from $5.12 to $5.71. Following these transactions, Ms. Kiessling holds 709,376 shares of Common Stock.