Glaukos Corporation
Glaukos Corporation (GKOS) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · GKOS · as of Jun 8, 2026
Activity summary
Buy transactions
0
P-Purchase only
Sell transactions
38
12 Months
Buy/Sell ratio
0.00
Buy/Sell (by trades)
Overall sentiment
Glaukos Corporation insiders have been primarily selling shares over the past 12 Months. Selling activity is often driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment toward the company.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 8, 2026
GKOS insider buying and selling by quarter
GKOS insider selling · GKOS insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 8, 2026
Active insiders
Most active in past 12 months · GKOS ceo insider trading
Showing all insiders · Click a card to filter the transactions table below
▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API
Recent insider transactions
GKOS executive sell shares · GKOS board member insider trading · GKOS insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| May 28, 2026 | WEN LEANA Director | Award | 1,878 | — | Form 4 |
| May 28, 2026 | WEISNER AIMEE S Director | Award | 1,878 | — | Form 4 |
| May 28, 2026 | Torres Denice Director | Award | 1,878 | — | Form 4 |
| May 28, 2026 | Foley Mark J Director | Award | 1,878 | — | Form 4 |
| May 28, 2026 | Hoffmeister David F Director | Award | 1,878 | — | Form 4 |
| May 28, 2026 | Kliman Gilbert H Director | Award | 1,878 | — | Form 4 |
| May 28, 2026 | Stapley Marc Director | Award | 1,878 | — | Form 4 |
| May 26, 2026 | Hoffmeister David F Director | Option | 15,000 | $370K | Form 4 |
| May 14, 2026 | Kliman Gilbert H Director | Option | 5,000 | $123K | Form 4 |
| May 14, 2026 | Kliman Gilbert H Director | Sale | 5,000 | $704K | Form 4 |
| May 11, 2026 | Kliman Gilbert H Director | Option | 5,000 | $123K | Form 4 |
| May 11, 2026 | Kliman Gilbert H Director | Sale | 5,000 | $675K | Form 4 |
| Apr 30, 2026 | Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER | Option | 10,000 | $387K | Form 4 |
| Apr 30, 2026 | Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER | Sale | 10,000 | $1.40M⚡ | Form 4 |
| May 1, 2026 | Gilliam Joseph E PRESIDENT & COO | Sale | 19,573 | $2.81M⚡ | Form 4 |
| May 1, 2026 | WEN LEANA Director | Sale | 1,700 | $244K | Form 4 |
| Apr 10, 2026 | Navratil Tomas CHIEF DEVELOPMENT OFFICER | Sale | 1,237 | $144K | Form 4 |
| Apr 10, 2026 | Navratil Tomas CHIEF DEVELOPMENT OFFICER | Sale | 210 | $25K | Form 4 |
| Apr 10, 2026 | Navratil Tomas CHIEF DEVELOPMENT OFFICER | Sale | 614 | $73K | Form 4 |
| Apr 10, 2026 | Navratil Tomas CHIEF DEVELOPMENT OFFICER | Sale | 32 | $4K | Form 4 |
| Apr 2, 2026 | Navratil Tomas CHIEF DEVELOPMENT OFFICER | Other | 1,146 | $126K | Form 4 |
| Apr 2, 2026 | Navratil Tomas CHIEF DEVELOPMENT OFFICER | Other | 1,831 | $201K | Form 4 |
| Apr 2, 2026 | Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER | Other | 1,589 | $174K | Form 4 |
| Apr 2, 2026 | Gilliam Joseph E PRESIDENT & COO | Other | 3,169 | $347K | Form 4 |
| Apr 1, 2026 | Burns Thomas William CHAIRMAN & CEO · Director | Gift | 180,308 | — | Form 4 |
Thurman Alex R.
SVP & CHIEF FINANCIAL OFFICER
Date
Apr 30
Shares
10,000
Price
$38.68
Value
$387K
Thurman Alex R.
SVP & CHIEF FINANCIAL OFFICER
Date
Apr 30
Shares
10,000
Price
$140.00
Value
$1.40M ⚡
Gilliam Joseph E
PRESIDENT & COO
Date
May 1
Shares
19,573
Price
$143.54
Value
$2.81M ⚡
Navratil Tomas
CHIEF DEVELOPMENT OFFICER
Date
Apr 10
Shares
1,237
Price
$116.72
Value
$144K
Navratil Tomas
CHIEF DEVELOPMENT OFFICER
Date
Apr 10
Shares
210
Price
$117.45
Value
$25K
Navratil Tomas
CHIEF DEVELOPMENT OFFICER
Date
Apr 10
Shares
614
Price
$119.35
Value
$73K
Navratil Tomas
CHIEF DEVELOPMENT OFFICER
Date
Apr 10
Shares
32
Price
$120.23
Value
$4K
Navratil Tomas
CHIEF DEVELOPMENT OFFICER
Date
Apr 2
Shares
1,146
Price
$109.60
Value
$126K
Navratil Tomas
CHIEF DEVELOPMENT OFFICER
Date
Apr 2
Shares
1,831
Price
$109.60
Value
$201K
Thurman Alex R.
SVP & CHIEF FINANCIAL OFFICER
Date
Apr 2
Shares
1,589
Price
$109.60
Value
$174K
Gilliam Joseph E
PRESIDENT & COO
Date
Apr 2
Shares
3,169
Price
$109.60
Value
$347K
Burns Thomas William
CHAIRMAN & CEO · Director
Date
Apr 1
Shares
180,308
Price
—
Value
—
⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About GKOS insider trading
GKOS insider trades
Glaukos Corporation (GKOS) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including Navratil Tomas (CHIEF DEVELOPMENT OFFICER), Burns Thomas William (CHAIRMAN & CEO · Director), Thurman Alex R. (SVP & CHIEF FINANCIAL OFFICER). Over the past 12 months, 5 insiders have filed transactions with the SEC. GKOS insiders have been primarily selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For Glaukos Corporation's institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
GKOS insider trading · 5 questionsThe insiders of Glaukos Corporation (GKOS) include executives and directors such as Navratil Tomas (CHIEF DEVELOPMENT OFFICER), Burns Thomas William (CHAIRMAN & CEO · Director), Thurman Alex R. (SVP & CHIEF FINANCIAL OFFICER), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026