Navratil Tomas 4

What Happened

• Tomas Navratil, Chief Development Officer at GLAUKOS (GKOS), disposed of a total of 1,989 shares on March 16, 2026. Transactions comprised 958 shares withheld by the issuer to cover tax obligations (cashless/tax withholding) at $98.94 each ($94,785) and three open-market sales: 460 shares at a weighted $97.33 ($44,772), 299 shares at $98.21 ($29,365), and 272 shares at $99.05 ($26,942). Total proceeds/consideration across these dispositions were about $195,864.
• These were sales (not purchases); the open-market sales were executed under a pre-established Rule 10b5-1 trading plan.

Key Details

• Transaction date: March 16, 2026; Form 4 filed March 19, 2026 (appears filed one business day late).
• Prices/ranges: 958 shares withheld at $98.94; 460 shares sold at weighted $97.33 (trades ranged $96.85–$97.85); 299 shares at weighted $98.21 (range $97.86–$98.86); 272 shares at weighted $99.05 (range $98.87–$99.11).
• Shares involved: 1,989 total disposed. Filing notes 35,687 restricted stock units remain unvested/not delivered to the reporting person.
• Notable footnotes: F1 (shares withheld for tax withholding on RSU vesting), F3 (sales executed under a Rule 10b5-1 plan adopted Mar 12, 2026), F4–F6 (sales executed in multiple trades; weighted averages reported).
• Filing timeliness: Report filed Mar 19 for Mar 16 transactions — appears to be one business day late (Form 4 normally due within two business days).

Context

• The 958-share transaction was a tax-withholding event related to RSU vesting (a common administrative disposition), and the open-market sales were pre-scheduled under a 10b5-1 plan, which allows insiders to sell shares according to a preset schedule regardless of current company news.
• Sales do not necessarily indicate a change in insider sentiment; purchases are generally viewed as a stronger positive signal.