ASP Isotopes Inc.
For the period ended Dec 31, 2025. Filed Apr 10, 2026.
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FY2025 · Filed Apr 10, 2026
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Item 9B. Other Information
Trading Arrangements of Section 16 Reporting Persons.
During the quarter ended December 31, 2025, the directors and officers of the Company (as defined in Rule
16a-1(f) of the Exchange Act)adopted or terminated the contracts, instructions, or written plans for the purchase or sale of our securities set forth in the table below.
| Name and Title | Action | Adoption/ Termination Date | Rule 10b5-1 (1) | Non-Rule 10b5-1 (2) | Total Number of Shares of Common Stock to be Sold (3) | Expiration Date |
|---|---|---|---|---|---|---|
| Heather Kiessling (Chief Financial Officer) | Adoption | December 19, 2025 | X | — | Up to 92,496 | April 14, 2027 |
| Paul E. Mann (Chief Executive Officer and Executive Chairman) | Adoption(4) | December 30, 2025 | X | — | 1,005,100 | March 3, 2027 |
| Duncan Moore (Director) | Adoption | December 31, 2025 | X | — | 11,462 | April 16, 2026 |
(1)
Contract, instruction or written plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act.
(2)
“Non-Rule 10b5-1 trading arrangement” as defined in Item 408(c) of Regulation S-K under the Exchange Act.
(3)
Rule 10b5-1 trading arrangements that are intended to provide for “eligible sell-to-cover transactions” (as described in Rule 10b5-1(c)(1)(ii)(D)(3) under the Exchange Act) to satisfy tax withholding obligations arising exclusively from vesting of restricted stock awards (RSAs).
(4)
The adoption of the Stock Sale Plan, dated December 30, 2025, by Mr. Mann also terminated his Stock Sale Plan, dated December 13, 2024.
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