WEN LEANA 4

What Happened
Wen Leana, a director of Glaukos Corp (GKOS), received two awards on May 28, 2026 totaling 4,865 restricted stock units (RSUs): 1,878 RSUs (direct) and 2,987 RSUs reported as a derivative award. Both awards were granted at $0.00 per unit (code A — award/grant) and will convert to an equivalent number of common shares when delivered. The RSUs vest in full on the one-year anniversary of the grant date under the issuer’s Director Compensation Policy.

Key Details

• Transaction date: 2026-05-28; Filing date (Form 4): 2026-06-01 (timely filed).
• Grants: 1,878 RSUs (direct) and 2,987 RSUs (derivative), total 4,865 RSUs; acquisition price reported $0.00.
• Vesting: Awards vest in full one year from grant date (per footnotes F1 and F3).
• Holdings note (F2): Form indicates 4,609 RSUs that have not vested or been delivered to the reporting person, and some RSUs that have vested but delivery was deferred.
• Transaction type code: A = Award/Grant. No sale or open-market purchase reported.

Context
RSU grants to directors are a common form of compensation and do not represent an open-market purchase or sale. These awards typically become company shares only upon vesting and any subsequent delivery, so they are not an immediate market-value investment by the insider. This filing is informational and was submitted within the required two-business-day window.