Gilliam Joseph E 4

What Happened Joseph E. Gilliam, President & COO of Glaukos Corp (GKOS), had 1,056 shares of common stock withheld by the company on 2026-06-25 to satisfy tax withholding obligations tied to the vesting/delivery of previously granted restricted stock units (RSUs). The withheld shares were valued at $142.57 each, totaling $150,554 (rounded).

Key Details

• Transaction date: 2026-06-25; filing date: 2026-06-29 (filed within normal Form 4 timing).
• Transaction type/code: F — shares withheld to cover tax liability (this is a disposition via withholding, not an open-market sale).
• Shares withheld: 1,056 at $142.57 each; total ≈ $150,554.
• Shares owned after transaction: not specified in the provided filing excerpt.
• Footnotes:
  • F1: Withheld shares relate to tax withholding upon vesting and delivery of RSUs granted on March 18, 2021.
  • F2: The reporting person still has 41,983 RSUs that have not yet vested or been delivered.

Context This was a routine tax-withholding action tied to RSU vesting — the company retained shares to satisfy tax obligations, not a discretionary sale on the open market. Such withholdings are common and generally not interpreted as a direct signal of the insider’s view on the stock.