Carson William H. 4

What Happened
Carson William H., a director of Annexon, acquired 8,000 shares in a reported purchase on 2026-03-10. The shares were bought at $5.67 each for a total reported outlay of $45,360. This was a purchase (insider buying is often watched by investors as a potentially positive signal).

Key Details

• Transaction date and price: 2026-03-10 — 8,000 shares at $5.67 per share (total $45,360).
• Transaction type: Reported as an open-market or private purchase (Form 4 code P).
• Footnote: Transaction was effected pursuant to the reporting person’s Rule 10b5‑1 trading plan adopted December 8, 2025.
• Shares owned after transaction: Not disclosed in the provided filing excerpt.
• Filing timeliness: Report filed 2026-03-12 for a 2026-03-10 trade (appears timely under Form 4 rules).

Context
A 10b5‑1 plan indicates the trade was executed under a pre-established trading arrangement, which can limit claims the trade was based on material non-public information. Purchases by insiders can draw investor interest, but the presence of a pre-set plan means this trade may have been scheduled in advance rather than a discretionary buy.