SCHEDULE 13G/A 0001558370-24-001083 0001644557 XXXXXXXX LIVE 9 Common Stock 12/31/2024 0001192448 GLAUKOS CORPORATION 377322102 1 Glaukos Way Aliso Viejo CA 92656 Rule 13d-1(d) Thomas W. Burns X1 2453695.00 100000.00 2453695.00 100000.00 2553695.00 4.4 IN Ownership consists of (i) 1,072,811 shares issuable upon the exercise of options that are currently exercisable or will vest and become exercisable within 60 days of December 31, 2024, (ii) 28,845 shares held by Mr. Burns as of December 31, 2024, (iii) 893,932 shares held by the Burns Family Trust as of December 31, 2024, of which Mr. Burns is a beneficiary and co-Trustee, (iv) 238,107 shares held by the Burns Annuity Trust as of December 31, 2024, of which Mr. Burns is a beneficiary and co-Trustee, (v) 120,000 shares held by the Burns Charitable Remainder Trust as of December 31, 2024, of which Mr. Burns is a beneficiary and co-Trustee, (vi) 100,000 shares held by the Thomas W. Burns Irrevocable Trust as of December 31, 2024, of which Mr. Burns is a beneficiary, and (vii) 100,000 shares held by the Janet M. Burns Irrevocable Trust as of December 31, 2024, of which Mr. Burns is trustee and Mr. Burns' spouse is a beneficiary, over which Mr. Burns shares voting and dispositive power. The percent of class reported in Row 9 of this cover page is reported based upon 56,443,648 shares of Glaukos Corporation common stock outstanding at December 31, 2024. GLAUKOS CORPORATION 1 Glaukos Way, Aliso Viejo, CA, 92656. Thomas W. Burns Same as Item 1(b) See Row 4 of cover page Y See Row 9 of cover page See Row 11 of cover page : See Row 5 of cover page See Row 6 of cover page See Row 7 of cover page See Row 8 of cover page N Y Y Y Y Y Y Thomas W. Burns /s/ Thomas W. Burns 02/12/2025