Thurman Alex R. 4

What Happened Alex R. Thurman, Chief Financial Officer of Glaukos Corp (GKOS), exercised options to acquire 10,000 shares at an exercise price of $38.68 per share (cost $386,800) on April 30, 2026, and sold 10,000 shares in an open-market transaction at $140.00 per share for proceeds of $1,400,000. The filing also shows a derivative disposition of 10,000 shares at $38.68 (likely part of the exercise/settlement process). The transactions were effected under a pre-established Rule 10b5-1 trading plan.

Key Details

• Transaction date: April 30, 2026; Form 4 filed May 4, 2026 (appears timely).
• Option exercise: 10,000 shares at $38.68 each = $386,800 (acquired).
• Open-market sale: 10,000 shares at $140.00 each = $1,400,000 (disposed).
• Derivative disposition: 10,000 shares at $38.68 each = $386,800 (listed as disposed).
• Sales and option exercises were executed pursuant to a Rule 10b5-1 plan adopted December 15, 2025 (footnotes F2, F3).
• Filing footnote indicates 5,230 restricted stock units (RSUs) remain unvested/not delivered (F1).
• Option vesting schedule noted in filing: four-year vesting with 25% after one year, then monthly over three years (F4).
• Shares owned following the transactions: not specified in the provided filing.

Context This appears to be a cashless-style exercise followed by an immediate sale: the CFO exercised options and sold shares the same day under a 10b5-1 plan, a common way for insiders to convert option value to cash while following pre-set trading rules. The use of a 10b5-1 plan means trades were pre-authorized (adopted Dec 15, 2025). These filings are factual records of transactions and do not, by themselves, indicate the insider’s view of the company’s outlook.