Clifton Michael S. 4

What Happened
Michael S. Clifton, a director of Rigetti Computing, sold 50,000 derivative shares on May 21, 2026, at $10.00 per share for total proceeds of $500,000. The filing is coded as a sale (S) of derivative securities.

Key Details

• Transaction date and price: May 21, 2026 — 50,000 shares at $10.00 each (total $500,000).
• Transaction type: Sale (S) of derivative securities.
• Footnotes: Transaction executed under a Rule 10b5-1 trading plan adopted March 10, 2025 (pre‑arranged); the derivative securities were fully vested and exercisable.
• Shares owned after transaction: Not specified in the provided filing excerpt.
• Filing timeliness: Report filed May 22, 2026 (covers 5/21/2026) — appears timely.

Context
The sale was made under a pre-set 10b5-1 plan, which typically means the trade was scheduled in advance and not necessarily a real-time signal of the insider’s view. Because this was a derivative disposition (the securities were noted as fully vested and exercisable), the transaction may reflect sale of instruments tied to underlying equity; the filing itself does not state the insider’s motivation.