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.

Original reporting
SEC EDGAR · Navratil Tomas
Published Sep 18, 2026, 9:32 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Sep 18, 2026, 9:34 PM UTC. Informational, not investment advice.
How this was made
AlphAI summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
AlphAI market briefInsider activity
Primary signal
$GKOS
Neutral
high confidence
Mentioned
$GKOS
Relevance
3/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$GKOSNeutralLow
01

Why it matters

The disclosed sale is routine and modest; investors should monitor for any subsequent insider activity.

02

Market read

Minor insider sell; low trading relevance.

03

What to watch

Potential tax or liquidity reasons for the sale; not necessarily a confidence issue.

Relevance 3/10Novelty 3/10Timing: post‑market 2026‑09‑16

Background

Form 4 filings disclose insider transactions; a 10b5‑1 plan indicates pre‑arranged trades.

Company-level read

Ticker impact

$GKOSNeutralHigh confidence
Context

Chief Development Officer Navratil Tomas sold 1,457 shares for $243K via a 10b5‑1 plan, reducing his stake to 72,433 shares.

Expected impact

No significant impact expected.

Evidence & confidence

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

  • Navratil Tomas

    Chief Development Officer of GLAUKOS Corp.

  • GLAUKOS Corp

    Ticker GKOS, a US‑listed biotech.

Full insider trading history

This story covers one filing. See everything behind it: every insider buy and sell on record, 10b5-1 plans, late filings, and which officers and directors are trading.

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