WEISNER AIMEE S 4/A

What Happened

• Aimee S. Weisner, a director of GLAUKOS Corp (GKOS), was granted a derivative award on May 28, 2026 covering 2,987 shares. The grant is reported as an acquisition (award) with an acquisition price of $0.00 and an exercise price of $106.52 per share. The options vest in full on the one-year anniversary (May 28, 2027) and were granted under the issuer’s Director Compensation Policy.
• This filing is an amendment (Form 4A) correcting the originally reported exercise price; the initial Form 4 filed June 1, 2026 incorrectly listed the exercise price as $53.57.

Key Details

• Transaction date: 2026-05-28 (grant).
• Grant amount: 2,987 option shares; exercise price: $106.52 per share; acquisition price reported $0.00.
• Vesting: Vests in full on the one-year anniversary (per Director Compensation Policy).
• Filing: Amended Form 4A filed 2026-06-23 to correct exercise price (original filed June 1, 2026).
• Shares owned after transaction: Not specified in the provided filing.
• Footnotes: F1 corrects exercise price; F2 confirms grant under Director Compensation Policy and one-year vesting.

Context

• This was an equity compensation award (options), not a purchase or sale of shares. Options give the holder the right to buy shares later at the exercise price ($106.52); exercising would require payment of that price and may be followed by a sale if the holder chooses. The grant is routinely used for director compensation/retention and does not, by itself, indicate a buy or sell market action.