Thurman Alex R. 4

What Happened

• Alex Thurman, Chief Financial Officer of Glaukos Corp. (GKOS), executed option exercises and an open-market sale on July 6, 2026. The filing shows two option-exercise entries for 10,000 shares each at an exercise price of $38.68 (total exercise cost $773,600). Separately, 10,000 shares were sold in the open market at $150.00 per share for proceeds of $1,500,000. One of the exercised lots is reported as acquired; the other exercise line is reported as disposed (derivative).

Key Details

• Transaction date: July 6, 2026 (Period of Report: 2026-07-06; Form filed 2026-07-08).
• Option exercises: two entries of 10,000 shares @ $38.68 = $386,800 each (total exercised 20,000 shares; aggregate exercise cost $773,600).
• Open-market sale: 10,000 shares @ $150.00 = $1,500,000 proceeds.
• Shares owned after transaction: the provided filing data does not list total post-transaction holdings; it does note 5,230 restricted stock units that have not yet vested or been delivered to the reporting person.
• Notable footnotes: the exercises and the sale were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 15, 2025. Options vest over four years (25% at one year, then monthly over three years).
• Filing timeliness: Form 4 was filed two days after the reported transactions (filed 2026-07-08 for trades on 2026-07-06), consistent with routine reporting timing.

Context

• The filing shows both option exercises and an immediate disposition of exercised shares. When an exercise and sale occur together (as here), it can reflect a cashless or sell-to-cover settlement, but the Form 4 does not detail the exact mechanics.
• Trades were executed under a pre-arranged 10b5-1 plan, which typically schedules transactions in advance and is intended to avoid questions of opportunistic timing.
• These are insider transactions by an executive (not a 10% owner); sales do not necessarily signal negative views and purchases are generally considered more informative for bullish sentiment.