GLAUKOS (GKOS) CFO Alex Thurman Exercises Options, Sells 20,000 Shares

What Happened

• Alex R. Thurman, Chief Financial Officer of GLAUKOS Corp (GKOS), exercised stock options and sold the resulting shares on August 7, 2026. The filing shows an exercise of 20,000 shares at $33.81 per share (cost $676,200) and an open-market sale of 20,000 shares at a weighted-average price of $180.13 per share (proceeds $3,602,600). The Form 4 also reports a derivative exercise/disposition for 20,000 shares at $0.00 (reported as a derivative transaction).
• Both the sale and the option exercises were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 15, 2025, and the sale was executed in multiple trades at prices ranging $180.00–$180.42 (weighted avg $180.13).

Key Details

• Transaction date: August 7, 2026.
• Option exercise: 20,000 shares @ $33.81 (acquired) — $676,200 total outlay.
• Open-market sale: 20,000 shares @ weighted avg $180.13 — $3,602,600 proceeds (executed in multiple trades; range $180.00–$180.42).
• Additional derivative entry: 20,000 shares reported as disposed at $0.00 (reported as a derivative exercise/conversion).
• Shares owned after transaction: not specified in the filing; footnote shows the reporting person has 5,230 restricted stock units (unvested/not delivered) and 225 shares purchased via the issuer’s Employee Stock Purchase Plan.
• Notable footnotes: sales and option exercises were under a December 15, 2025 Rule 10b5-1 trading plan; the filing notes the multi-trade execution and offers to provide full trade-by-trade detail on request; option vesting schedule referenced (25% after one year, then monthly over 3 years).
• Filing: Form 4 filed Aug 11, 2026 for trades on Aug 7, 2026 — Form 4s are generally due within two business days, so this filing appears to have been submitted after that window.

Context

• This was effectively an exercise-and-sell (cashless-like) sequence: options were exercised and shares were sold in the market the same day. The use of a pre-established 10b5-1 plan means the trades were pre-planned rather than timed ad hoc.
• The derivative entry at $0.00 reflects conversion/exercise reporting of a derivative instrument on the Form 4; the filing does not provide additional detail beyond the reported entries.