ASP Isotopes (ASPI) COO Robert Ainscow Sells $48K of Stock

ASP Isotopes Inc. Chief Operating Officer Robert Ainscow sold 22,500 shares of the company on October 14, 2026. The transaction was revealed in a Form 4 filing submitted to the Securities and Exchange Commission.

Inside Robert Ainscow's ASPI Trade

According to the regulatory filing, the Chief Operating Officer sold the shares at a price of $2.11 each, for a total value of $47,565. This planned sale was executed under a Rule 10b5-1 trading plan. Following the transaction, Ainscow holds 2,225,941 shares of the company, representing a 1.0% decrease in his direct holdings.

Other Institutional Activity in ASP Isotopes

Institutional investors adjusted their positions in ASP Isotopes earlier in the year. Encompass Capital Advisors, LLC reduced its holdings by 350,449 shares, ending with 6,561,754 shares worth about $14.04 million. Rovida Investment Management Ltd kept its stake steady at 4,100,000 shares valued at about $8.77 million. Alyeska Investment Group, L.p. grew its holdings by 151,302 shares, ending with 2,843,503 shares worth about $6.09 million. Exchange Traded Concepts LLC added 72,054 shares to hold 2,255,509 shares valued at about $4.83 million. AWM Investment Company, Inc. trimmed its position by 543,026 shares, finishing with 1,581,490 shares worth about $3.38 million.

ASP Isotopes Inc. Stock Up 3.6%

Shares of ASP Isotopes recently traded around $2.15. The stock sits below its 50-day moving average of $3.48 and well below its 52-week high of $13.19, while holding slightly above its 52-week low of $2.03.

Recent Earnings

The advanced materials company reported $30.85 million in trailing twelve month revenue alongside an earnings per share loss of $1.49. The firm carries a return on equity of -90.3%. The next earnings report is scheduled for November 12, 2026.

Insider Buying and Selling at ASP Isotopes Inc.

Other executives and directors made trades in the months leading up to this filing. Chief Executive Officer Paul Elliot Mann sold 251,275 shares on September 4, 2026, valued at $999,237. Robert Ainscow previously sold 8,438 shares on September 8, 2026, at $4.29 apiece for a total of $36,216. Director Robert John Andrew Ryan bought 8,000 shares on September 28, 2026, at $2.70 per share totaling $21,600, and followed up by purchasing 15,000 shares on September 30, 2026, at $2.68 per share for $40,200.

About ASP Isotopes

ASP Isotopes Inc. operates as a development-stage advanced materials company focused on producing, marketing, and selling isotopes. It operates in two main segments, covering Nuclear Fuels and Specialist Isotopes and Related Services. The nuclear fuel division targets the research and development of high-assay low-enriched uranium, known as HALEU, and Lithium-6 for advanced nuclear reactor markets.

Bottom Line

Investors will look toward the upcoming earnings report on November 12, 2026, for further updates on the company's financial progress and isotope production efforts. Insider and institutional filings will continue to provide visibility into how stakeholders manage their positions.