Form4insider filings, from the source

Insider holders · CIK 0001921865

ASP Isotopes Inc. · ASPI

Every insider with a reported Table I holding at this company, ranked by their last-reported share count. A balance is only as fresh as its filing — the report date sits next to every row on purpose. ← Back to activity

InsiderDirect sharesIndirect sharesTotal reportedLast report (ET)From
Paul Elliot MannChairman and CEO9,328,570—9,328,570Sep 4, 2026 · 9:30 pm EDTForm 4
Robert AinscowCOO2,248,441—2,248,441Sep 10, 2026 · 9:45 pm EDTForm 4
Heather KiesslingChief Financial Officer1,526,252—1,526,252Jul 2, 2026 · 9:45 pm EDTForm 4
Donald George AinscowEVP, Gen Counsel, Secretary776,322—776,322Sep 4, 2026 · 9:33 pm EDTForm 4
Todd WiderDirector672,247—672,247Jul 1, 2026 · 9:45 pm EDTForm 4
Michael GorleyDirector87,908—87,908Jul 1, 2026 · 9:45 pm EDTForm 4

Balances come from each insider’s most recent filing that reports a Table I holding; an insider who left the company years ago still appears with their last-known figure and its date. Indirect totals collapse multiple vehicles (trusts, LLCs) into one number — open the filing for the breakdown. Shares as filed, not split-adjusted.