GLAUKOS Corp (GKOS) Insider Ownership

Historic Insider Ownership Trends

GKOS's three largest insider shareholders as of March 23, 2026 are Thomas William Burns (Chairman Ceo, 961.28K shares), Thomas William Burns (Chairman Ceo, 250.46K shares), Chris M. Calcaterra (Chief Operating Officer, 181.59K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Thomas William Burns Chairman Ceo 0 961,285 10 Feb, 2026
Thomas William Burns Chairman Ceo 242,451 0 19 Mar, 2026
Joseph E Gilliam President Coo 87,658 0 19 Mar, 2026
Tomas Navratil Chief Development Officer 73,631 0 19 Mar, 2026
Alex R. Thurman Svp Chief Financial Officer 49,249 0 19 Mar, 2026
Aimee S Weisner 18,806 29,505 23 Feb, 2026
Marc Stapley 37,449 0 26 Jan, 2026
Gilbert H Kliman 35,528 0 07 Jan, 2026
David F Hoffmeister 32,671 0 07 Jan, 2026
Denice Torres 22,334 0 07 Jan, 2026
Leana Wen 21,439 0 07 Jan, 2026
William J Phd Link 17,821 0 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
16 Mar, 2026 Joseph E Gilliam Common Stock D 1,189 $98.94 87,658 D F
16 Mar, 2026 Thomas William Burns Common Stock D 2,801 $98.94 242,451 D F
16 Mar, 2026 Alex R. Thurman Common Stock D 614 $98.94 49,874 D F
16 Mar, 2026 Tomas Navratil Common Stock D 958 $98.94 74,662 D F
16 Mar, 2026 Tomas Navratil Common Stock D 460 $97.33 74,202 D S
17 Mar, 2026 Alex R. Thurman Common Stock D 625 $99.15 49,249 D S
16 Mar, 2026 Tomas Navratil Common Stock D 299 $98.21 73,903 D S
16 Mar, 2026 Tomas Navratil Common Stock D 272 $99.05 73,631 D S
13 Mar, 2026 Tomas Navratil Common Stock D 1,074 $97.02 75,620 D F
13 Mar, 2026 Thomas William Burns Common Stock D 5,212 $97.02 245,252 D F
13 Mar, 2026 Joseph E Gilliam Common Stock D 2,462 $97.02 88,847 D F
05 Mar, 2026 Tomas Navratil Common Stock D 361 $112.10 76,694 D F
05 Mar, 2026 Thomas William Burns Common Stock D 1,098 $112.10 250,464 D F
24 Feb, 2026 Thomas William Burns Common Stock D 4,059 $119.17 251,562 D F
24 Feb, 2026 Tomas Navratil Common Stock D 396 $119.17 77,055 D F
24 Feb, 2026 Joseph E Gilliam Common Stock D 1,057 $119.17 91,309 D F
19 Feb, 2026 Aimee S Weisner Common Stock D 980 $0.00 18,806 D G
19 Feb, 2026 Aimee S Weisner Common Stock A 980 $0.00 29,505 I G
19 Feb, 2026 Aimee S Weisner Common Stock A 15,000 $24.69 33,806 D M
19 Feb, 2026 Aimee S Weisner Common Stock D 2,153 $115.69 31,653 D S