ASP Isotopes (ASPI) insider trading in the last 6 months

Form 4 filings, newest first

Quality Score today -9

One insider bought $62K, 4 sold $1.6M.

SellHeather Kiessling$48KChief Financial Officerat $2.19 on Oct 16, filed Oct 21

SellHeather KiesslingChief Financial Officer$48Kat $2.19 on Oct 16, filed Oct 21

BuyRobert John Andrew Ryan$40KDirectorat $2.68 on Sep 30, filed Oct 1

BuyRobert John Andrew RyanDirector$40Kat $2.68 on Sep 30, filed Oct 1

BuyRobert John Andrew Ryan$22KDirectorat $2.70 on Sep 28, filed Sep 30

BuyRobert John Andrew RyanDirector$22Kat $2.70 on Sep 28, filed Sep 30

From SEC Form 4s, the newest filed Oct 21, 2026 · Insiders have 2 business days to file a trade

5 more filings on ASPI in the last 6 months, for Pro members. See them free →

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Who files at ASP Isotopes

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Questions about ASPI's insider trades

As of Nov 2, 2026: ASP Isotopes (ASPI) has 8 insider filings on record in the last 6 months, the newest filed Oct 21, 2026. Its Quality Score is -9 (Poor). Scores as of 4:39 PM ET, 15 minutes behind.

Are ASPI insiders buying or selling?

One insider bought $62K across 2 filings, and 4 insiders sold $1.6M across 6 filings, in the last 6 months. The newest filing: Heather Kiessling, Chief Financial Officer, sold $48K on Oct 16, 2026.

Who are ASPI's biggest insider sellers?

By the dollars of their sales in the last 6 months: Donald George Ainscow (EVP, Gen Counsel, Secretary), 2 sales; Todd Wider (Director), 2 sales; Michael Gorley (Director), 1 sale. 4 insiders sold in all.

When did an ASPI insider last buy?

Robert John Andrew Ryan, Director, bought ASPI shares ($40K) on Sep 30, 2026, filed Oct 1, 2026, the newest insider buy on record.

ASP Isotopes's page has its Quality Score, its chart, and its earnings. More in Materials and Miscellaneous Chemical Products. ASPI is on insider buys, Sep 28 to Oct 4, 2026.