GLAUKOS Corp insider trading
GKOS$163.75+0.58 (+0.36%)
“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.”
Insider Trading vs Stock Price
Insider Trading vs Stock Price data
Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (+93.8%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Open market purchase
Open market sellNet dollar flow · Buy / Sell balance
PremiumQ2 '25Q3 '25Q4 '25Q1 '26Q2 '26Q3 '26
Unlock quarterly net flowKey players
- TWThomas William Burns2.9986%
- DFDavid F. Hoffmeister0.1455%
- JEJoseph E. Gilliam0.1231%
- TNTomas Navratil0.1201%
- MJMark J. Foley0.099%
- ASAimee S. Weisner0.0819%
- ARAlex R. Thurman0.0744%
- MSMarc Stapley0.0635%
- GHGilbert H. Kliman0.0634%
- DTDenice Torres0.0379%
AI Activity Analysis
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Insider activity
Fromto
| Company | Insider / role | Action | ΔOwn | Avg price | Amount | ||
|---|---|---|---|---|---|---|---|
| GKOS | Tomas Navratil | Open market sell$168K | -1.5% | $154.88 | $168K | Sep 25, 2026 | Sep 28, 2026 |
| GKOS | Tomas Navratil | Open market sell$35.3K | -0.3% | $154.24 | $35.3K | Sep 25, 2026 | Sep 28, 2026 |
| GKOS | Tomas Navratil | Open market sell$20.8K | -0.2% | $152.71 | $20.8K | Sep 25, 2026 | Sep 28, 2026 |
| GKOS | Tomas Navratil | Open market sell$25.3K | -0.2% | $151.70 | $25.3K | Sep 25, 2026 | Sep 28, 2026 |
| GKOS | Tomas Navratil | Open market sell$688 | 0.0% | $172.00 | $688 | Sep 16, 2026 | Sep 18, 2026 |
| GKOS | Tomas Navratil | Open market sell$40K | -0.3% | $170.95 | $40K | Sep 16, 2026 | Sep 18, 2026 |
| GKOS | Tomas Navratil | Open market sell$20.2K | -0.2% | $168.38 | $20.2K | Sep 16, 2026 | Sep 18, 2026 |
| GKOS | Tomas Navratil | Open market sell$77K | -0.6% | $167.32 | $77K | Sep 16, 2026 | Sep 18, 2026 |
| GKOS | Tomas Navratil | Open market sell$31.7K | -0.3% | $166.20 | $31.7K | Sep 16, 2026 | Sep 18, 2026 |
| GKOS | Tomas Navratil | Open market sell$56.8K | -0.5% | $164.60 | $56.8K | Sep 16, 2026 | Sep 18, 2026 |
| GKOS | Tomas Navratil | Open market sell$16.8K | -0.1% | $163.20 | $16.8K | Sep 16, 2026 | Sep 18, 2026 |
| GKOS | Tomas Navratil | Open market sell$1.83K | 0.0% | $182.50 | $1.83K | Aug 28, 2026 | Sep 1, 2026 |
| GKOS | Tomas Navratil | Open market sell$1.1M | -7.6% | $181.19 | $1.1M | Aug 28, 2026 | Sep 1, 2026 |
| GKOS | Tomas Navratil | Open market sell$1.38M | -8.7% | $180.25 | $1.38M | Aug 28, 2026 | Sep 1, 2026 |
| GKOS | Leana Wen | Open market sell$88K | -2.4% | $167.63 | $88K | Jul 31, 2026 | Aug 3, 2026 |
| GKOS | Tomas Navratil | Open market sell$99.6K | -0.8% | $139.06 | $99.6K | Jul 1, 2026 | Jul 8, 2026 |
| GKOS | Tomas Navratil | Open market sell$201K | -1.7% | $130.68 | $201K | Jun 16, 2026 | Jun 18, 2026 |
| GKOS | Leana Wen | Open market sell$244K | -7.9% | $143.35 | $244K | May 1, 2026 | May 4, 2026 |
| GKOS | Joseph E. Gilliam | Open market sell$2.81M | -21.1% | $143.54 | $2.81M | May 1, 2026 | May 4, 2026 |
| GKOS | Tomas Navratil | Open market sell$3.85K | 0.0% | $120.23 | $3.85K | Apr 10, 2026 | Apr 14, 2026 |
| GKOS | Tomas Navratil | Open market sell$73.3K | -0.7% | $119.35 | $73.3K | Apr 10, 2026 | Apr 14, 2026 |
| GKOS | Tomas Navratil | Open market sell$24.7K | -0.2% | $117.45 | $24.7K | Apr 10, 2026 | Apr 14, 2026 |
| GKOS | Tomas Navratil | Open market sell$144K | -1.3% | $116.72 | $144K | Apr 10, 2026 | Apr 14, 2026 |
| GKOS | Alex R. Thurman | Open market sell$267K | -5.7% | $106.46 | $267K | Mar 25, 2026 | Mar 27, 2026 |
| GKOS | Alex R. Thurman | Open market sell$160K | -3.2% | $105.24 | $160K | Mar 24, 2026 | Mar 25, 2026 |
| GKOS | Alex R. Thurman | Open market sell$62K | -1.3% | $99.15 | $62K | Mar 17, 2026 | Mar 19, 2026 |
| GKOS | Tomas Navratil | Open market sell$26.9K | -0.4% | $99.05 | $26.9K | Mar 16, 2026 | Mar 19, 2026 |
| GKOS | Tomas Navratil | Open market sell$29.4K | -0.4% | $98.21 | $29.4K | Mar 16, 2026 | Mar 19, 2026 |
| GKOS | Tomas Navratil | Open market sell$44.8K | -0.6% | $97.33 | $44.8K | Mar 16, 2026 | Mar 19, 2026 |
| GKOS | Alex R. Thurman | Open market sell$33.1K | -0.6% | $105.00 | $33.1K | Nov 25, 2025 | Nov 26, 2025 |
| GKOS | Joseph E. Gilliam | Open market sell$1.74M | -17.3% | $90.00 | $1.74M | Nov 18, 2025 | Nov 20, 2025 |