Guardant Health Co-CEO Helmy Eltoukhy Reports RSU Vesting & Tax Withholding

Transaction Summary

Guardant Health, Inc. (NASDAQ: GH) Co-Chief Executive Officer and Director Helmy Eltoukhy filed a Form 4 detailing routine restricted stock unit (RSU) vesting events and associated tax withholding obligations occurring on September 30, 2026, and October 1, 2026.

Breakdown of Activity:

• RSU Conversions (Code M):

  • September 30, 2026: Acquired 2,817 shares of Common Stock upon vesting at $0.00.
  • October 1, 2026: Acquired 23,997 shares and 9,716 shares of Common Stock upon vesting at $0.00.
  • Total Acquired: 36,530 shares.

• Tax Withholding Dispositions (Code F):

  • September 30, 2026: 1,428 shares withheld at $178.36 per share ($254,698.08).
  • October 1, 2026: 17,087 shares withheld at $174.75 per share ($2,985,953.25).
  • Total Withheld: 18,515 shares totaling $3,240,651.33.

• Net Share Increase: +18,015 shares added to holdings.

• Post-Transaction Holdings: 1,958,949 shares held indirectly through the Helmy A. Eltoukhy Revocable Trust.

Market Context & Trading Significance

• Significance Level: Low
• Analysis: None of the reported transactions represent open-market sales or discretionary purchases. The dispositions were purely automatic share withholdings (Code F) administered by the company to satisfy statutory tax obligations triggered by scheduled quarterly RSU vesting schedules (awards originally granted in March 2024, March 2025, and March 2026). Mr. Eltoukhy’s net beneficial ownership increased following the net settlement of these equity grants.