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).
| 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.
| 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 |