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sellWeak cluster of 210b5-1 plan

Alex R. Thurman sold $1.6M of GKOS

SVP & CHIEF FINANCIAL OFFICER at GLAUKOS Corp. 10,000 shares at an average of $155.00, traded Jul 9, 2026, filed Jul 13, 2026.

Warning score
25
Value
$1.6M
10,000 shares
Holdings after
43,681
-19% from before
From 52-week low
+108%
low $74.67, close $155.07
From 52-week high
0%
high $155.07, as of Jul 9, 2026

Score components

  • Role
    CFO
    +22
  • Trade size
    $1.6M at market
    +25
  • Share of holdings sold
    Sold 19% of holdings
    +5
  • Cluster
    2 insiders selling within 14 days
    +8
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

GKOSOct 12, 2026 · close 168.02
Since filing Jul 13, 2026: +10.0%SPY +4.1% · excess +5.9%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001920061-26-000014, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Jul 9, 2026MOption exercise
Common Stock10b5-1
+10,000$38.68$387k53,681Jul 13, 2026
Jul 9, 2026SOpen-market sale
Common Stock10b5-1
-10,000$155.00$1.6M43,681Jul 13, 2026
Jul 9, 2026MOption exercise
Stock Option (Right to Buy)derivative10b5-1
-10,000$0.00$010,000Jul 13, 2026

Related signals

Other insiders at GLAUKOS Corp and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
8Weak
GKOSsell10b5-1
GLAUKOS Corp
Tomas Navratil
CHIEF DEVELOPMENT OFFICER
$251k
1,527 shares
-2%
8Weak
GKOSsell10b5-1
GLAUKOS Corp
Tomas Navratil
CHIEF DEVELOPMENT OFFICER
$249k
1,615 shares
-2%
8Weak
GKOSsell10b5-1
GLAUKOS Corp
Tomas Navratil
CHIEF DEVELOPMENT OFFICER
$243k
1,457 shares
-2%
53Moderate
GKOSsell 2
GLAUKOS Corp
Tomas Navratil
CHIEF DEVELOPMENT OFFICER
$2.5M
13,744 shares
-16%
33Weak
GKOSsell 4
GLAUKOS Corp
Gilbert H Kliman
director
$475k
2,500 shares
-6%
55Moderate
GKOSsell 4
GLAUKOS Corp
Joseph E Gilliam
PRESIDENT & COO
$11M
60,000 shares
-45%
37Weak
GKOSsell 410b5-1
GLAUKOS Corp
Alex R. Thurman
SVP & CHIEF FINANCIAL OFFICER
$3.6M
20,000 shares
-31%
39Weak
GKOSsell 3
GLAUKOS Corp
Leana Wen
director
$88k
525 shares
-2%
17Weak
GKOSsell10b5-1
GLAUKOS Corp
Alex R. Thurman
SVP & CHIEF FINANCIAL OFFICER
$1.6M
10,000 shares
-19%
13Weak
GKOSsell 210b5-1
GLAUKOS Corp
Tomas Navratil
CHIEF DEVELOPMENT OFFICER
$100k
716 shares
-1%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Alex R. Thurman sold $1.6M of GKOS | InsiderTell