$GKOS

Navratil Tomas sold $2.5M of GKOS

Navratil Tomas (CHIEF DEVELOPMENT OFFICER) sold 13,744 shares of GLAUKOS Corp (GKOS) at an average of $180.67 ($180.25–$182.50, $2.48M total) across 3 trades on 2026-08-28.

Original reporting
SEC EDGAR · Navratil Tomas
Published Sep 1, 2026, 4:00 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Sep 2, 2026, 7:29 AM 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
Bearish
medium confidence
Mentioned
$GKOS
Relevance
6/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$GKOSBearishLow
01

Why it matters

Provides fresh, primary data on insider activity, useful for short-term traders.

02

Market read

Insider sale adds modest negative pressure on GKOS stock.

03

What to watch

No 10b5-1 plan; sale may be unrelated to company fundamentals.

Relevance 6/10Novelty 5/10Timing: post-market 2026-08-28

Background

SEC Form 4 filing discloses insider transactions for public companies.

Company-level read

Ticker impact

$GKOSBearishMedium confidence
Context

Chief Development Officer Navratil Tomas sold 13,744 shares for $2.48M on 2026-08-28.

Expected impact

possible short-term downside pressure

Evidence & confidence

Sale size is modest but notable for a small-cap; insider is a senior officer.

Market effects

Minimal impact on the broader biotech sector.

Limited to U.S. small-cap investors.

Low

Counterpoint

The sale could be a routine portfolio rebalancing, not a negative signal.

Key entities

  • Glaukos Corp

    US-listed ophthalmic medical device company (ticker GKOS).

  • Navratil Tomas

    Chief Development Officer of Glaukos Corp.

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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