GLAUKOS Corp (GKOS) Insider Ownership

Historic Insider Ownership Trends

Data spanning the past 90 days through February 19, 2026 reveals that Glaukos's three principal insider shareholders consist of Chairman & Ceo Thomas William Burns (1.22Mn shares), Chief Operating Officer Chris M. Calcaterra (181.59K shares), President & Coo Joseph E Gilliam (92.37K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Thomas William Burns Chairman & Ceo 1,216,906 10 Feb, 2026
Chris M. Calcaterra Chief Operating Officer 181,594 28 Mar, 2022
Joseph E Gilliam President & Coo 92,366 26 Jan, 2026
Tomas Navratil Chief Development Officer 77,451 31 Dec, 2025
Mark J Foley 58,389 07 Jan, 2026
Alex R. Thurman Svp & Chief Financial Officer 50,488 26 Nov, 2025
Marc Stapley 37,449 26 Jan, 2026
Gilbert H Kliman 35,528 07 Jan, 2026
David F Hoffmeister 32,671 07 Jan, 2026
Aimee S Weisner 26,786 07 Jan, 2026
Denice Torres 22,334 07 Jan, 2026
Leana Wen 21,439 07 Jan, 2026
William J Phd Link 17,821 07 Jun, 2021

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
09 Feb, 2026 Thomas William Burns Common Stock A 166,000 $30.92 255,621 D M
06 Feb, 2026 Thomas William Burns Common Stock D 67,353 $0.00 89,621 D G
06 Feb, 2026 Thomas William Burns Common Stock A 67,353 $0.00 961,285 I G
22 Jan, 2026 Marc Stapley Common Stock D 1,671 $127.92 43,074 D S
22 Jan, 2026 Marc Stapley Common Stock D 3,812 $126.07 48,637 D S
22 Jan, 2026 Marc Stapley Common Stock D 1,300 $129.78 37,449 D S
22 Jan, 2026 Marc Stapley Common Stock A 15,000 $24.69 52,449 D M
22 Jan, 2026 Marc Stapley Common Stock D 4,325 $129.11 38,749 D S
22 Jan, 2026 Marc Stapley Common Stock D 3,892 $126.96 44,745 D S
22 Jan, 2026 Joseph E Gilliam Common Stock D 2,406 $126.10 100,458 D S
22 Jan, 2026 Joseph E Gilliam Common Stock A 10,498 $55.18 102,864 D M
22 Jan, 2026 Joseph E Gilliam Common Stock D 3,194 $129.28 92,366 D S
22 Jan, 2026 Joseph E Gilliam Common Stock D 3,100 $127.03 97,358 D S
22 Jan, 2026 Joseph E Gilliam Common Stock D 1,798 $128.07 95,560 D S
21 Jan, 2026 Joseph E Gilliam Common Stock A 4,502 $55.18 96,868 D M
21 Jan, 2026 Joseph E Gilliam Common Stock D 4,502 $124.65 92,366 D S
16 Jan, 2026 Thomas William Burns Common Stock D 186,945 $115.00 153,775 D S
16 Jan, 2026 Thomas William Burns Common Stock A 186,945 $16.49 340,720 D M
08 Jan, 2026 Thomas William Burns Common Stock D 88,055 $115.00 153,775 D S
08 Jan, 2026 Thomas William Burns Common Stock A 88,055 $16.49 241,830 D M