Cipher Digital Inc.: CFO Mumford Gregory J.D. exercised 250,000 shares

What happened

• Mumford Gregory J.D., chief financial officer, exercised or converted derivatives for two tranches of 125,000 shares each on Oct 14, 2026 (total 250,000 shares).
• The filing shows 67,768 shares were surrendered to cover tax withholding at $9.94 per share for $673,614. One conversion line shows 125,000 shares disposed (derivative) at $0.00.

Key details

• Transaction date(s) and price(s): Oct 14, 2026 — exercise/conversion (code M) 125,000 shares (acquired, price N/A); Oct 14, 2026 — exercise/conversion (code M) 125,000 shares (disposed, $0.00); Oct 14, 2026 — tax withholding (code F) 67,768 shares disposed at $9.94 for $673,614.
• Shares owned after the transaction: not reported in the provided filing.
• Footnotes: F1 — each restricted stock unit represents a contingent right to receive one share of common stock. F2 — the RSUs vest in equal installments on Oct 14, 2026, Oct 14, 2027 and Oct 14, 2028, subject to continuous service.
• Filing date and timeliness: Form 4 filed Oct 15, 2026 reporting transactions dated Oct 14, 2026.

Why it may matter

• The filing reports exercised or converted derivatives and a share surrender to cover tax withholding; it does not show a market sale of shares for cash.
• The filing does not show why the insider traded or why the company acted.