Transaction · 0001920053-26-000026

Navratil Tomas

Navratil Tomas, CDO, reported an open-market or private sale at GLAUKOS Corp involving 6091.000000 shares for an estimated $1103628.29. Reported holdings after the transaction were 73900.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

Open-market sellSEC transaction code SCDO
GKOSGLAUKOS Corp
Trade date
Aug 28, 2026
Filing date
Sep 01, 2026
View on SEC Insider profile
Estimated value-$1.10MShares × reported price
Shares traded6.09k$181.19 per share
Holdings after73.9kDirect
% of reported position traded7.61%This security and ownership context
How reported position traded is calculated

Shares sold ÷ (holdings after + shares sold). Estimated position before: 79,991 shares.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

GKOS price since this filing

Daily closing prices, with the filing date and available return windows
GKOS · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago -8.5%1w ago +4.6%1d ago +2.9%
Returns since7d +4.7%30d -7.7%90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001920053-26-000026
Common Stock
Transaction date
Aug 28, 2026
Filed Sep 01, 2026, 10:24 PM · 4d delay
Shares
6,091 sh
$181.19 per share
Estimated value
-$1.10M
Computed from shares × price
Holdings after
73,900 sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Cluster Selling Direct Ownership Large Sale Repeat Seller
Filing-only score

+6 points

Compact filing score computed from stored Form 4 facts. Version v1.

Positive filing signal

This filing has a modest positive filing-only score. Treat it as a useful flag for review, not as a buy signal.

How this score is calculated
  • direct_ownership+6 points

    direct_or_indirect_ownership = D

    Direct ownership reports the insider's personal stake.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

CHIEF DEVELOPMENT OFFICER

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    This transaction was executed in multiple trades at prices ranging from $179.69 to $180.69. The price reported above reflects the weighted average price. The reporting person hereby undertakes to prov…

  2. F2

    Includes 38,817 restricted stock units that have not yet vested or been delivered to the Reporting Person.

  3. F3

    This transaction was executed in multiple trades at prices ranging from $180.71 to $181.61. The price reported above reflects the weighted average price. The reporting person hereby undertakes to prov…

Original filing · 0001920053-26-000026
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GKOS