Gilliam Joseph E 4

What Happened

• Joseph E. Gilliam, President & COO of Glaukos Corp (GKOS), had 2,462 shares withheld by the company on March 13, 2026 to satisfy tax withholding obligations related to vested restricted stock units (RSUs). The shares were valued at $97.02 each, for an aggregate value of $238,863. This was a tax-withholding disposition (transaction code F), not an open-market sale.

Key Details

• Transaction date: 2026-03-13; Form 4 filed: 2026-03-17 (filed within the typical Form 4 deadline).
• Withheld: 2,462 shares at $97.02 per share; total value ≈ $238,863.
• Nature of transaction: Tax withholding on vesting/delivery of RSUs (code F) — shares were surrendered/withheld by the issuer, not sold on the open market.
• Footnotes from the filing:
  • F1: Shares were withheld by the issuer to satisfy the reporting person’s tax withholding obligations upon vesting and delivery of RSUs granted March 13, 2025.
  • F2: The filing notes 56,132 RSUs that have not yet vested or been delivered to the reporting person.
• Shares owned after the transaction: not specified in the provided filing summary.

Context

• Withholding shares to cover taxes is a routine administrative step when RSUs vest and does not necessarily indicate a change in the insider’s sentiment about the company. Purchases by insiders are generally more informative for bullish signals; withholding to cover taxes is common and neutral.