MIGNONE ROBERTO 4

What Happened

• Roberto Mignone, a director of Guardant Health (GH), converted restricted stock units (RSUs) into 264 common shares on 2026-05-21 and another 264 shares on 2026-06-21. Each conversion is reported as an exercise/conversion of a derivative (code M) at $0.00 per share. The filing also shows dispositions of the same 264 shares on each date (same-day disposals).

Key Details

• Transaction dates and prices:
  • 2026-05-21: 264 shares acquired via exercise/conversion @ $0.00; 264 shares disposed (derivative) @ $0.00.
  • 2026-06-21: 264 shares acquired via exercise/conversion @ $0.00; 264 shares disposed (derivative) @ $0.00.
• Shares owned after the transactions: not specified in the provided filing excerpt.
• Footnotes: F1 notes the RSU award (granted 11/08/2024) vests over four years (25% vested 10/21/2025; remaining 75% vests monthly over the next three years). F2: not applicable for RSUs.
• Filing/timeliness: Form filed 2026-06-23 covering a 2026-05-21 transaction; the May 21 conversion was reported late (included in a later filing), while the June 21 conversion was reported within two business days of that event.

Context

• Code M indicates exercise or conversion of a derivative instrument; here it reflects RSU conversions to common shares (no cash paid at conversion, hence $0.00 per share).
• The same-day acquisition and disposition on each date means the converted shares were immediately disposed of; this is often a routine result of vesting and tax-withholding or immediate sale, but the filing does not state the specific reason.