ASP Isotopes (ASPI) COO Robert Ainscow Sells 22,500 Shares

What Happened Robert Ainscow, Chief Operating Officer of ASP Isotopes Inc. (ASPI), sold 22,500 shares in an open-market transaction on April 16, 2026. The reported weighted-average price was $5.21 per share, yielding gross proceeds of approximately $117,113. This was a sale (not a purchase) and appears to be a routine "sell to cover" for tax withholding related to vested restricted stock.

Key Details

• Transaction date: 2026-04-16; Form 4 filed: 2026-04-17 (filed within the standard reporting window).
• Transaction type: Sale (S) — open market / private sale.
• Shares sold: 22,500; reported weighted-average price: $5.21; total value ≈ $117,113.
• Price range: shares were sold in multiple trades at prices ranging from $5.055 to $5.52 (weighted average reported; per-price breakdown available on request per filing).
• Footnote F1: Sale effected pursuant to a Rule 10b5-1 plan adopted June 9, 2025 to cover tax withholding obligations from vesting restricted stock awards.
• Footnote F2: Weighted-average price shown; the filer can provide exact share counts at each price within the stated range upon request.
• Shares owned after transaction: not disclosed in the provided filing excerpt.

Context

• "Sell to cover" transactions under a pre-established 10b5-1 plan are common when executives need to satisfy tax withholding on vested awards; they do not necessarily indicate a change in sentiment about the company.
• Filing was submitted one day after the transaction, which is within the typical Form 4 reporting timeframe (generally two business days).