Gilliam Joseph E 4

What Happened

• Joseph E. Gilliam, President & COO of Glaukos Corp (GKOS), had 1,057 shares withheld by the company on Feb 24, 2026 to satisfy tax withholding obligations tied to vested restricted stock units. The shares were valued at $119.17 each, totaling $125,963. This was a withholding-for-taxes transaction (code F), not an open-market sale.

Key Details

• Transaction date and price: 2026-02-24, 1,057 shares at $119.17 per share (total $125,963).
• Transaction type: F — shares withheld by issuer to cover tax withholding upon RSU vesting (not a discretionary sale).
• Shares owned after transaction: Not specified in the provided filing.
• Footnotes:
  • F1: These shares were withheld by the issuer to satisfy the reporting person’s tax liability upon vesting/delivery of RSUs originally granted on March 18, 2021.
  • F2: The filing notes 60,661 restricted stock units that have not yet vested or been delivered to the reporting person.
• Filing timeliness: Report filed Feb 26, 2026 for a Feb 24, 2026 transaction (filed within the typical Form 4 reporting window).

Context

• Withholding-to-cover-tax transactions are routine administrative actions when RSUs vest; they do not necessarily indicate a change in the insider’s view of the company since shares are surrendered to meet tax obligations rather than sold for cash on the open market.
• For retail investors, purchases or open-market sales by insiders can be more informative than withholding transactions; this filing reflects standard tax withholding after vesting.