Tachibana Aaron 4

What Happened

• Aaron Tachibana, CFO and COO of Personalis (PSNL), exercised 40,000 stock options at $9.16 per share (cost $366,400) and then sold 40,000 common shares in an open‑market transaction for a weighted average of $12.01 per share (gross proceeds $480,400) on June 4, 2026. The filing also reports a related derivative conversion/disposition shown at $0 in the Form 4. The transactions were reported on Form 4 filed June 5, 2026.
• Net pre‑tax proceeds from the sale minus the exercise cost were about $114,000 (480,400 − 366,400).

Key Details

• Transaction date: June 4, 2026.
• Exercise: 40,000 shares exercised at $9.16 per share (total $366,400).
• Sale: 40,000 shares sold, weighted average sale price $12.01 (total $480,400). Sale price ranged $12.00–$12.10 per share (see footnote).
• Additional line: a derivative disposal/exercise reported at $0 in the filing (listed separately).
• Shares owned after the transaction: Not disclosed in the provided filing excerpt.
• Footnotes: Transactions were made pursuant to a Rule 10b5‑1 trading plan adopted Aug 7, 2025 (F1). Sale price is a weighted average; detailed per‑share prices available on request (F2). The options exercised were fully vested and exercisable (F3).
• Timeliness: Filing was submitted the next day (June 5, 2026) — not marked late.

Context

• This is effectively a same‑day exercise and sale (commonly a cashless exercise), where the insider exercised vested options and sold the resulting shares in the open market. Such transactions are often routine under pre‑arranged 10b5‑1 plans and do not on their own indicate a change in the insider’s view of the company.