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SEC EDGAR$GKOS

Navratil Tomas sold $10.6M of GKOS

Navratil Tomas (CHIEF DEVELOPMENT OFFICER) sold 44,436 shares of GLAUKOS Corp (GKOS) at an average of $238.97 ($237.54–$240.52, $10.62M total) across 4 trades on 2026-10-30.

Original reporting
SEC EDGAR · Navratil Tomas
Published Nov 4, 2026, 2:45 AM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Nov 4, 2026, 3:02 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.
About AlphAI AI DeskScoring methodologyReport an issue
AlphAI market briefInsider activity
Primary signal
$GKOS
Bearish
high confidence
Mentioned
$GKOS
Relevance
6/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$GKOSBearishMed
01

Why it matters

The disclosed sale reduces insider ownership and may trigger short‑term selling pressure.

02

Market read

First‑report insider sale of a senior officer; modest size but enough to affect short‑term sentiment.

03

What to watch

The insider may have needed liquidity for personal reasons; the company’s fundamentals remain unchanged.

Relevance 6/10Novelty 7/10Timing: pre‑market today

Background

SEC Form 4 filing discloses insider transactions for public companies.

Company-level read

Ticker impact

$GKOSBearishHigh confidence
Context

Chief Development Officer Navratil Tomas sold 44,436 shares for $10.6M, reducing his stake to 37,328 shares.

Expected impact

likely pressure as the market prices in the insider sell

Evidence & confidence

A senior officer offloaded a sizable position, which traders often interpret as a lack of confidence.

Market effects

Sector

None significant beyond the company level.

Regional

Limited to U.S. biotech/ophthalmology investors.

Global

Low

Counterpoint

What could challenge this read

The sale could be a routine portfolio rebalancing rather than a negative signal.

Key entities

  • person
    Navratil Tomas

    Chief Development Officer of Glaukos Corp who sold $10.6M of stock.

Read at source← All news

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.

GKOS insider trading history →

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