HENRY CHRISTIAN O 4

What Happened

• HENRY CHRISTIAN O, President & CEO of Pacific Biosciences (PACB), disposed of a total of 472,667 shares in two transactions: 331,793 shares on 2026-02-17 and 140,874 shares on 2026-02-18. Reported proceeds are $522,906 and $229,484 respectively, for combined proceeds of about $752,390. Both transactions are reported as sales (S) and footnotes indicate the sales relate to mandatory tax-withholding on vested restricted stock units.

Key Details

• Transaction dates and amounts:
  • 2026-02-17: 331,793 shares sold at a reported price of $1.58 (weighted average price range cited $1.51–$1.68) — proceeds ~$522,906. (Footnote F2)
  • 2026-02-18: 140,874 shares sold at a reported price of $1.63 (weighted average price range cited $1.55–$1.70) — proceeds ~$229,484. (Footnote F3)
• Total shares sold: 472,667; total proceeds: ≈ $752,390.
• Footnote F1 states the shares were mandatorily sold to cover tax withholding obligations tied to RSU vesting (i.e., a sell-to-cover).
• Shares owned after the transactions: not disclosed in the excerpt provided in your request.
• Filing timeliness: Form 4 filed 2026-02-19 for transactions on 2026-02-17–02-18 — appears timely (Form 4 is generally due within two business days).

Context

• These sales are reported as mandatory sell-to-cover for tax withholding on vested restricted stock units, a common and routine insider transaction that does not by itself indicate the CEO’s view of the company’s prospects.
• Footnotes F2 and F3 note the reported prices are weighted averages over a range; the issuer or SEC staff can request details of per-share prices within those ranges if needed.