Glaukos's three largest insider shareholders as of June 18, 2026 are Thomas William Burns (Chairman Ceo, 1.21Mn shares), Chris M. Calcaterra (Chief Operating Officer, 181.59K shares), Joseph E Gilliam (President Coo, 92.99K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Aimee S Weisner | - | 18,806 | 29,505 | 23 Feb, 2026 |
| Mark J Foley | - | 58,389 | 0 | 07 Jan, 2026 |
| Chris M. Calcaterra | Chief Operating Officer | 181,594 | 0 | 28 Mar, 2022 |
| Thomas William Burns | Chairman Ceo | 73,026 | 1,141,593 | 03 Apr, 2026 |
| Joseph E Gilliam | President Coo | 92,992 | 0 | 03 Apr, 2026 |
| Leana Wen | - | 21,439 | 0 | 07 Jan, 2026 |
| Tomas Navratil | Chief Development Officer | 92,463 | 0 | 03 Apr, 2026 |
| Alex R. Thurman | Svp Chief Financial Officer | 43,681 | 0 | 03 Apr, 2026 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 10 Apr, 2026 | Tomas Navratil | Common Stock | D | 1,237 | $116.72 | 91,226 | D | S |
| 10 Apr, 2026 | Tomas Navratil | Common Stock | D | 210 | $117.45 | 91,016 | D | S |
| 10 Apr, 2026 | Tomas Navratil | Common Stock | D | 614 | $119.35 | 90,402 | D | S |
| 10 Apr, 2026 | Tomas Navratil | Common Stock | D | 32 | $120.23 | 90,370 | D | S |
| 02 Apr, 2026 | Joseph E Gilliam | Common Stock | D | 3,169 | $109.60 | 92,992 | D | F |
| 02 Apr, 2026 | Alex R. Thurman | Common Stock | D | 1,589 | $109.60 | 43,681 | D | F |
| 02 Apr, 2026 | Joseph E Gilliam | Common Stock | D | 3,169 | $109.60 | 92,992 | D | F |
| 02 Apr, 2026 | Joseph E Gilliam | Common Stock | D | 3,169 | $109.60 | 92,992 | D | F |
| 02 Apr, 2026 | Tomas Navratil | Common Stock | D | 1,146 | $109.60 | 94,294 | D | F |
| 02 Apr, 2026 | Alex R. Thurman | Common Stock | D | 1,589 | $109.60 | 43,681 | D | F |
| 01 Apr, 2026 | Thomas William Burns | Common Stock | D | 180,308 | $0.00 | 82,963 | D | G |
| 02 Apr, 2026 | Alex R. Thurman | Common Stock | D | 1,589 | $109.60 | 43,681 | D | F |
| 01 Apr, 2026 | Thomas William Burns | Common Stock | A | 180,308 | $0.00 | 1,141,593 | I | G |
| 02 Apr, 2026 | Tomas Navratil | Common Stock | D | 1,831 | $109.60 | 92,463 | D | F |
| 02 Apr, 2026 | Thomas William Burns | Common Stock | D | 2,469 | $109.60 | 80,494 | D | F |
| 02 Apr, 2026 | Thomas William Burns | Common Stock | D | 7,468 | $109.60 | 73,026 | D | F |
| 31 Mar, 2026 | Tomas Navratil | Common Stock | D | 5,798 | $109.60 | 95,440 | D | F |
| 25 Mar, 2026 | Joseph E Gilliam | Common Stock | A | 5,829 | $0.00 | 78,369 | D | A |
| 25 Mar, 2026 | Alex R. Thurman | Common Stock | D | 2,511 | $106.46 | 41,967 | D | S |
| 25 Mar, 2026 | Alex R. Thurman | Common Stock | D | 2,511 | $106.46 | 41,967 | D | S |