Aerts Austin 4

What Happened
Austin Aerts, Chief Financial Officer of Sera Prognostics (SERA), sold 5,440 shares on 2026-06-09. The weighted-average price reported was $2.08, producing gross proceeds of about $11,315. The filing notes this sale was a "sell-to-cover" transaction to satisfy tax withholding on vested restricted stock units (RSUs), not a discretionary cash-out sale.

Key Details

• Transaction date: 2026-06-09; Form 4 filed 2026-06-10 (appears timely).
• Type: Sale (S) — sell-to-cover to satisfy RSU tax withholding (footnote F1).
• Shares sold: 5,440; weighted average price: $2.08; total proceeds ≈ $11,315.
• Price range for the block trade: $1.96 to $2.21 (footnote F2). The weighted average reflects multiple executions; the filer can provide the split by price on request.
• Shares owned after transaction: not disclosed in this filing.
• Footnotes: F1 = sale mandated to cover tax withholding on RSU vesting; F2 = weighted average price from block trade across multiple prices.

Context
Sell-to-cover transactions are a common administrative step when RSUs vest and do not generally signal a change in an insider’s view of the company. This transaction appears to be solely for tax withholding purposes rather than a voluntary sale for investment reasons.