# Glaukos (GKOS): value investors who own it | moatshark

1 value investor held Glaukos in their Q3 2026 13F, led by Polen Capital Management. See who bought, sold and how ownership has changed by quarter.

## 13F holders

| Manager | Portfolio | Value | Change | Quarters held |
| --- | --- | --- | --- | --- |
| Polen Capital Management | 0.0% | $673k | New | 1 |

## Directors buying and selling (Form 4, last 12 months)

| Date | Who | Role | Bought or sold | Shares | Value |
| --- | --- | --- | --- | --- | --- |
| 2026-10-05 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 888 | $146k |
| 2026-10-05 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 327 | $54k |
| 2026-10-05 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 312 | $52k |
| 2026-09-25 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 1083 | $168k |
| 2026-09-25 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 229 | $35k |
| 2026-09-25 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 167 | $25k |
| 2026-09-25 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 136 | $21k |
| 2026-09-16 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 460 | $77k |
| 2026-09-16 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 345 | $57k |
| 2026-09-16 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 234 | $40k |
| 2026-09-16 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 191 | $32k |
| 2026-09-16 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 120 | $20k |
| 2026-09-16 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 103 | $17k |
| 2026-09-16 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 4 | $1k |
| 2026-08-28 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 7643 | $1.4m |
| 2026-08-28 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 6091 | $1.1m |
| 2026-08-28 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 10 | $2k |
| 2026-08-19 | Kliman Gilbert H | Director | Sold | 2500 | $475k |
| 2026-08-11 | Gilliam Joseph E | PRESIDENT & COO | Sold | 32037 | $5.8m |
| 2026-08-11 | Gilliam Joseph E | PRESIDENT & COO | Sold | 27963 | $5.0m |

Source: SEC filings, via moatshark (https://www.moatshark.com/s/gkos). Values traded and returns are estimates. Not investment advice. Built 2026-10-21.