Tomas Navratil, Chief Development Officer of Glaukos Corp (NYSE:GKOS), filed a Form 4 on November 3, 2026, disclosing option exercises and open-market sales of common stock totaling 44,436 shares on October 30, 2026.

Key Highlights

  • Option exercises: Navratil exercised stock options covering 4,181 shares at $55.00 and 8,788 shares at $85.94, acquiring a combined 12,969 shares via transaction code M.
  • Open-market sales: Four separate sale transactions disposed of 10,221, 12,836, 14,943, and 6,436 shares, totaling 44,436 shares sold on October 30, 2026.
  • Weighted average sale prices: The four tranches were sold at weighted average prices of $237.54, $238.56, $239.64, and $240.52 per share, respectively.
  • Remaining beneficial ownership: Following all reported transactions, Navratil directly held 37,328 shares, which the filing notes includes 37,328 restricted stock units that have not yet vested or been delivered.
  • Clerical correction: The filing notes the amount reported was adjusted by 259 shares to correct a clerical error in an earlier balance.
  • Derivative securities eliminated: Both exercised stock option positions were reduced to zero shares remaining following the transactions.

Navratil's October 30, 2026 Option Exercises and Share Sales at Glaukos

According to the filing, Tomas Navratil, identified as Chief Development Officer of Glaukos Corp, executed a series of transactions on October 30, 2026. He first exercised two stock option grants: 4,181 shares under an option with an exercise price of $55.00 per share, and 8,788 shares under an option with an exercise price of $85.94 per share. The filing records both exercises under transaction code M, and both option positions were reduced to zero remaining derivative securities following the exercises.

Navratil then sold common stock in four separate tranches. The filing reports sales of 10,221 shares at a weighted average price of $237.54, 12,836 shares at $238.56, 14,943 shares at $239.64, and 6,436 shares at $240.52. Each tranche was executed in multiple trades, and the filing states the prices reported are weighted averages; it further notes that full information on individual trade prices and share counts will be provided upon request to the SEC staff, the issuer, or a security holder.

After all reported transactions, Navratil's direct beneficial ownership stood at 37,328 shares of common stock, all of which the filing identifies as restricted stock units that have not yet vested or been delivered to the reporting person. The filing also notes a 259-share adjustment to correct a clerical error in a prior reported balance. The two exercised option grants are described in Table II as vesting over four years from the grant date, with 25% vesting on the first anniversary and the remainder vesting in equal monthly installments over the following three years.

What Was Disclosed

The Form 4 discloses that Glaukos Chief Development Officer Tomas Navratil exercised two stock option grants and sold 44,436 shares of common stock on October 30, 2026, leaving him with 37,328 directly held shares, all of which are unvested restricted stock units.