MIGNONE ROBERTO 4

What Happened
Roberto Mignone, a director of Guardant Health (GH), reported a derivative exercise/conversion on 2026-03-21 that resulted in the acquisition of 264 shares at $0.00 and a same‑day disposition of 264 shares at $0.00. Both transactions show $0 cash consideration, indicating conversion/settlement of an award rather than a typical open‑market purchase or sale.

Key Details

• Transaction date: 2026-03-21
• Acquired: 264 shares via exercise/conversion of a derivative (code M) at $0.00 (total $0)
• Disposed: 264 shares (derivative) at $0.00 (total $0) — same day as acquisition
• Filing date: 2026-03-23 (filed within the common 2-business-day reporting window)
• Shares owned after the transaction: not specified in the provided information
• Footnotes:
  • F1: The underlying award is a restricted stock unit (RSU) granted Nov 8, 2024, vesting over four years (25% vested on Oct 21, 2024; remaining 75% vest monthly over the next three years).
  • F2: Not applicable for RSUs.

Context
The filing indicates conversion/settlement of an award (RSU) rather than a market buy or sale. The same‑day acquisition and disposition at $0.00 commonly reflect issuance/settlement mechanics for equity awards; the Form 4 does not show sale proceeds or specify if any net‑settlement or tax‑withholding occurred. This is a routine insider reporting of vested/converted award shares, not an obvious open‑market trade.