Tachibana Aaron 4

What Happened Aaron Tachibana, CFO and COO of Personalis (PSNL), exercised 1,201 stock options and immediately sold the same 1,201 shares on January 22, 2026. He paid $9.16 per share to exercise (total cost $11,001) and sold at $11.50 per share for proceeds of $13,812, yielding a net of roughly $2,811. The filing shows the option conversion/derivative line associated with the exercise.

Key Details

• Transaction date: 2026-01-22; Form 4 filed: 2026-01-23 (appears timely).
• Exercise: 1,201 shares at $9.16 each = $11,001 (code M — option exercise).
• Sale: 1,201 shares at $11.50 each = $13,812 (code S — open market sale).
• Derivative line: 1,201 shares at $0 shown for the option conversion (reflects the exercised derivative).
• Shares owned after transaction: Not specified in the provided filing excerpt.
• Footnotes: Transactions were made pursuant to a Rule 10b5-1 trading plan adopted Aug 7, 2025 (F1). The option shares were fully vested and exercisable (F2).

Context Because the exercise and sale occurred the same day, this effectively functions as a cashless exercise — the options were converted to shares and those shares were sold promptly. The presence of a pre-established 10b5-1 plan indicates the trades were planned in advance and follow an automated schedule; this is common and does not by itself indicate the insider’s view on the company’s prospects.