Guardant Health CFO Michael Brian Bell Disposes of Shares for Tax Obligations Upon RSU Vesting

Executive Summary

On October 2, 2026, Guardant Health, Inc. ($GH) Chief Financial Officer Michael Brian Bell reported transactions involving the vesting of restricted stock units (RSUs) and corresponding share withholding to satisfy tax liabilities.

Transaction Breakdown

• RSU Acquisitions (Code M):
  • 2,085 shares acquired at $0 (from a December 13, 2023 grant).
  • 3,324 shares acquired at $0 (from a November 8, 2024 grant).
  • 1,871 shares acquired at $0 (from a March 12, 2025 grant).
  • Total Shares Acquired: 7,280 shares.
• Tax Withholding (Code F):
  • 3,914 shares were surrendered/withheld by the issuer at $174.75 per share to cover statutory tax liabilities associated with the vesting events, totaling $683,971.50.

Holdings Analysis

Following these transactions, Michael Brian Bell directly owns 55,182 shares of Guardant Health common stock, representing a net increase of 3,366 shares compared to his pre-vesting position of 51,816 shares.

Trading Significance

This filing carries Low trading significance as it does not reflect discretionary open-market buying or selling. The disposition was strictly non-discretionary to fulfill tax withholding obligations tied to scheduled equity award vesting.