Lawrence Sandra AJ 4

What Happened

• Sandra A.J. Lawrence, a director of Sera Prognostics, sold 1,560 shares on March 6, 2026. The reported weighted-average price was $1.95 per share, for total proceeds of $3,042. The sale was reported as an open-market/private sale and was effected under a Rule 10b5-1 trading plan.

Key Details

• Transaction date: 2026-03-06
• Transaction type/code: Sale (S) — open-market/private sale
• Price: Weighted average $1.95; trades ranged from $1.90 to $2.00 (per footnote)
• Shares sold: 1,560; proceeds reported: $3,042
• Shares owned after transaction: Not provided in the excerpt of the filing
• Notable footnotes: (1) Sale was executed pursuant to a 10b5-1 plan adopted June 10, 2025. (2) Weighted-average price disclosed; the filer can provide per-trade prices on request.
• Filing timeliness: Reported on March 6, 2026 (same date as transaction), indicating a timely Form 4 filing.

Context

• This was a sale, which is common for insiders for liquidity or diversification reasons. Because the sale was made under a pre-established 10b5-1 plan, it is a pre-planned trade and should not be taken alone as a directional signal about the director’s view of company prospects.