Stapley Marc 4

What Happened
Marc Stapley, a director of GLAUKOS Corp (GKOS), exercised stock options to acquire 15,000 shares at $24.69 per share (cost $370,350) on January 22, 2026. On the same date he sold multiple blocks of GKOS shares (totaling 15,000 shares) in open-market transactions for aggregate proceeds of roughly $1.92 million. The filing also shows a derivative "disposed" line for 15,000 shares at $0.00 (reported as a derivative transaction).

Key Details

• Transaction date: January 22, 2026; Form 4 filed January 26, 2026 (4 days after the trades).
• Sales (all dispositions, open-market):
  • 3,812 shares @ $126.07 = $480,579 (weighted avg; multiple trades; see footnote F3)
  • 3,892 shares @ $126.96 = $494,128 (F4)
  • 1,671 shares @ $127.92 = $213,754 (F5)
  • 4,325 shares @ $129.11 = $558,401 (F6)
  • 1,300 shares @ $129.78 = $168,714 (F7)
  • Total sold ≈ 15,000 shares for ≈ $1,915,576.
• Option exercise (code M): 15,000 shares acquired @ $24.69 for $370,350 (F8 notes the exercise was under a Rule 10b5‑1 plan).
• Derivative disposal: 15,000 shares @ $0.00 reported as a disposition of a derivative (the filing does not further explain this line).
• Sales were executed pursuant to a Rule 10b5‑1 trading plan adopted June 4, 2025 (footnote F2).
• Shares owned after the transactions: not stated in the provided excerpt. Footnote F1 notes the reporting person’s holdings include 2,835 restricted stock units (some unvested and some vested with deferred delivery).

Context

• The filing shows simultaneous option exercise(s) and sales; this pattern is commonly executed under pre-established 10b5‑1 plans and can represent cashing out exercised shares or satisfying exercise/tax obligations. The $0.00 derivative disposition line often reflects net settlements or share surrender used in exercises, but the filing itself does not detail the mechanics.
• These are director-level transactions (not a 10% owner or major institutional disclosure) and were executed under an existing 10b5‑1 plan, which is a routine trading mechanism that does not by itself indicate a change in company outlook.
• Note on timeliness: the Form 4 was filed four days after the trades; Form 4s are generally required within two business days of the transaction.