Guardant Health: chief technology officer Darya Chudova exercised 8,033 shares

What happened

• Darya Chudova, chief technology officer, exercised or converted derivatives into 8,033 shares on Oct 1, 2026. The filing shows 8,033 shares acquired at $0.00 per share and 4,320 shares disposed at $174.75 per share for $754,920 (tax withholding).

Key details

• Transaction date: Oct 1, 2026. Conversion/exercise price shown as $0.00 for the derivative conversions; tax withholding price $174.75 per share for 4,320 shares ($754,920).
• Shares owned after the transaction: not stated in the supplied filing data.
• Footnotes: the filing says the 4,320 shares were retained by the company to meet the award-holder's tax withholding obligations and were not in excess of the tax liability (F1). The converted shares arise from restricted stock unit awards granted Nov 7, 2022 (vested over four years), Dec 13, 2023 (vested over three years), Nov 8, 2024 (vests over three years), and Mar 12, 2025 (vests over three years) with the vesting schedules described in the filing (F2–F6). F3 noted not applicable for RSUs.
• Filing timeliness: Form 4 filed Oct 2, 2026; no late filing indicated.

Why it may matter

• The transaction represents conversion/settlement of restricted stock units rather than an open-market sale. The company withheld 4,320 shares to satisfy tax withholding (net share settlement) rather than a cash payment.
• The filing does not show why the insider traded or why the company acted.