Navratil Tomas sold $243K of GKOS
Navratil Tomas (CHIEF DEVELOPMENT OFFICER) sold 1,457 shares of GLAUKOS Corp (GKOS) at an average of $166.92 ($163.20–$172.00, $0.24M total) across 7 trades on 2026-09-16 under a Rule 10b5-1 trading plan.
How this was made
The 30-second read
Why it matters
The disclosed sale is routine and modest; investors should monitor for any subsequent insider activity.
Market read
Minor insider sell; low trading relevance.
What to watch
Potential tax or liquidity reasons for the sale; not necessarily a confidence issue.
Background
Form 4 filings disclose insider transactions; a 10b5‑1 plan indicates pre‑arranged trades.
Ticker impact
Chief Development Officer Navratil Tomas sold 1,457 shares for $243K via a 10b5‑1 plan, reducing his stake to 72,433 shares.
No significant impact expected.
The sale size is small relative to market cap and follows a pre‑arranged plan, indicating routine portfolio rebalancing rather than loss of confidence.
Market effects
None; the transaction is company‑specific.
None; limited to GKOS shareholders.
None
Counterpoint
If the insider is offloading shares, it could signal upcoming negative news.
Key entities
- personNavratil Tomas
Chief Development Officer of GLAUKOS Corp.
- companyGLAUKOS Corp
Ticker GKOS, a US‑listed biotech.


