Quantum-Si (QSI) CFO Jeffry R. Keyes Sells Shares

What Happened

• Jeffry R. Keyes, Chief Financial Officer of Quantum-Si Inc., reported sales of company shares as part of a mandatory sell-to-cover for tax withholding tied to vested restricted stock units (RSUs). He sold 5,172 shares on 2026-09-21 (reported value $3,909) and 2,493 shares on 2026-09-22 (reported value $1,897), totaling 7,665 shares and about $5,806 in proceeds.

Key Details

• Transaction types: Sales (code S), executed as mandatory sell-to-cover for tax withholding (footnote F1).
• Dates & reported values:
  • 2026-09-21: 5,172 shares, weighted average price reported as $0.76, proceeds reported $3,909 (price range per footnote F2: $0.75–$0.762).
  • 2026-09-22: 2,493 shares, weighted average price reported as $0.76, proceeds reported $1,897 (price range per footnote F3: $0.7511–$0.7779).
• Footnotes: F1 = mandatory sell-to-cover for federal, state and local withholding taxes; insider could not alter this provision. F2/F3 = weighted average price ranges; full per-share sale-price detail available on request.
• Shares owned after the transactions: not provided in the summary data supplied.
• Filing timing: Form 4 filed 2026-09-23 covering transactions on 9/21–9/22; this filing date appears to fall within the typical two-business-day Form 4 reporting window and thus appears timely.

Context

• These sales were tax-withholding transactions tied to RSU vesting (a common administrative action) rather than discretionary open-market selling for investment reasons. Such sell-to-cover transactions are routine and do not necessarily indicate the insider’s view on the company’s prospects.