Navratil Tomas 4

What Happened
Tomas Navratil, Chief Development Officer of GLAUKOS (GKOS), had 1,074 shares of common stock withheld by the company to satisfy tax withholding obligations upon vesting of previously granted restricted stock units. The withholding was recorded at $97.02 per share for a total value of approximately $104,199. This was a tax-withholding disposition of vested RSUs, not an open-market sale.

Key Details

• Transaction date: March 13, 2026. Price per share: $97.02. Total value withheld: $104,199.
• Transaction type: F — shares withheld to cover tax withholding on vested RSUs (not a purchase or market sale).
• Shares owned after transaction: not specified in the filing; filing notes 38,456 restricted stock units remain unvested or undelivered to the reporting person (see footnote).
• Footnotes: F1 confirms shares were withheld by the issuer to satisfy tax withholding on RSUs granted March 13, 2025; F2 states 38,456 RSUs have not yet vested/delivered.
• Filing timeliness: Report filed March 17, 2026 for a March 13 transaction (filed within the SEC’s 2-business-day window).

Context
Withholding shares to cover taxes is a routine administrative action when RSUs vest and does not represent a market sale or a directional bet by the insider. For investors, purchases are generally more informative than tax-withholding dispositions; this filing mainly documents vesting and tax settlement.