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
Filing timeSep 01
Trade dateAug 28, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$176.70
Pre-filing
1mo ago -8.5%1w ago +4.6%1d ago +2.9%
Returns since
7d +0.0%30d +0.0%90d +0.0%180d +0.0%1y +0.0%

GKOS price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
GKOS since 2026-09-01Filed 2 days ago · 30 days of pre-filing context shaded
Loading…
Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

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
6.09k sh
$18.1k per share
Estimated value
-$110M
Computed from shares × price
Holdings after
73.9k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Cluster Selling Direct Ownership Large Sale Repeat Seller
+6score
Filing-only score

+6

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.

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
Related transactions

0 other filings

Same reporting owner
Recent company activity

0 recent txs

GKOS