ASP Isotopes (ASPI) EVP Donald Ainscow Sells 23,678 Shares

What Happened

• Donald George Ainscow, EVP, General Counsel and Secretary of ASP Isotopes Inc. (ASPI), sold 23,678 shares on 2026-09-02. The weighted average sale price was $3.89 per share for total proceeds of approximately $92,107. The sales were executed to satisfy mandatory tax-withholding obligations and were not discretionary trades by the reporting person.

Key Details

• Transaction date: 2026-09-02; Form 4 filed 2026-09-04 (within the typical 2-business-day filing window).
• Transaction type/code: Sale (S) — described as open market or private sale; sale executed automatically under a mandatory sell-to-cover provision (footnote F1).
• Price details: Weighted average $3.89; prices in the sale(s) ranged from $3.885 to $3.9202 (footnote F2). The reporting person can provide a breakdown of individual trade prices on request.
• Shares owned after the transaction: Not specified in the filing.

Context

• This was a routine sell-to-cover for tax withholding tied to an award agreement, which companies commonly use when equity awards vest. Such mandatory withholding sales are not typically interpreted as a personal decision about company prospects.