SERA PROGNOSTICS, INC.: Chief medical officer Tiffany Davis sold 8,024 shares

What happened Tiffany Eul Davis, chief medical officer, sold 8,024 shares in an open market or private sale on Oct 12, 2026 at a weighted average price of $2.03 per share, for $16,289. The filing states the shares were sold to cover tax withholding obligations in connection with the vesting of restricted stock units.

Key details

• Transaction date: Oct 12, 2026; Form 4 filed Oct 13, 2026.
• Transaction type and code: open market or private sale (S); sale was to satisfy tax withholding per footnote (F1).
• Price: weighted average $2.03; block trade prices ranged from $2.03 to $2.05 inclusive (footnote F2). The reporting person will provide details of the number of shares sold at each price upon request.
• Shares sold: 8,024; gross proceeds: $16,289.
• Shares owned after the transaction: not disclosed in the filing.
• Filing timeliness: Form 4 filed on Oct 13, 2026 for a transaction on Oct 12, 2026 (no late-filing flag reported).

Why it may matter

• The filing says the sale was a sell-to-cover to satisfy tax withholding on vested RSUs rather than a discretionary open-market sale.
• The filing does not show why the insider traded or why the company acted.