GKOS
Glaukos Corp
NYSE: GKOS · HEALTHCARE · MEDICAL DEVICES
$224.41
+2.01% today
Updated 2026-11-06
Market cap
$10.69B
P/E ratio
—
P/S ratio
17.44x
EPS (TTM)
$-3.26
Dividend yield
—
52W range
$81 – $192
Volume
1.3M
Glaukos Corp (GKOS) Insider transactions
Net insider activity
Net buying (71,674 shares)
Buy transactions
40
Sell transactions
57
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-10-05 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | S | 888 | $163.93 | $145569.84 |
| 2026-10-05 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | S | 327 | $164.78 | $53883.06 |
| 2026-10-05 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | S | 312 | $165.60 | $51667.20 |
| 2026-09-25 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 1,083 | $154.88 | $167735.04 |
| 2026-09-25 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 229 | $154.24 | $35320.96 |
| 2026-09-25 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 167 | $151.70 | $25333.90 |
| 2026-09-25 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 136 | $152.71 | $20768.56 |
| 2026-09-16 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 460 | $167.32 | $76967.20 |
| 2026-09-16 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 345 | $164.60 | $56787.00 |
| 2026-09-16 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 234 | $170.95 | $40002.30 |
| 2026-09-16 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 191 | $166.20 | $31744.20 |
| 2026-09-16 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 120 | $168.38 | $20205.60 |
| 2026-09-16 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 103 | $163.20 | $16809.60 |
| 2026-09-16 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 4 | $172.00 | $688.00 |
| 2026-08-28 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 7,643 | $180.25 | $1.38M |
| 2026-08-28 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 6,091 | $181.19 | $1.10M |
| 2026-08-28 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 10 | $182.50 | $1825.00 |
| 2026-08-19 | KLIMAN, GILBERT H | Director | Sale | 2,500 | — | — |
| 2026-08-19 | KLIMAN, GILBERT H | Director | Buy | 2,500 | $25.77 | $64425.00 |
| 2026-08-11 | GILLIAM, JOSEPH E | PRESIDENT & COO | Sale | 20,000 | — | — |
| 2026-08-11 | GILLIAM, JOSEPH E | PRESIDENT & COO | Sale | 10,000 | — | — |
| 2026-08-11 | GILLIAM, JOSEPH E | PRESIDENT & COO | Sale | 32,037 | $180.49 | $5.78M |
| 2026-08-11 | GILLIAM, JOSEPH E | PRESIDENT & COO | Sale | 27,963 | $178.89 | $5.00M |
| 2026-08-11 | GILLIAM, JOSEPH E | PRESIDENT & COO | Buy | 20,000 | $55.18 | $1.10M |
| 2026-08-11 | GILLIAM, JOSEPH E | PRESIDENT & COO | Buy | 10,000 | $48.46 | $484600.00 |
| 2026-08-07 | THURMAN, ALEX R. | SVP & CHIEF FINANCIAL OFFICER | Sale | 20,000 | — | — |
| 2026-08-07 | THURMAN, ALEX R. | SVP & CHIEF FINANCIAL OFFICER | Buy | 20,000 | $33.81 | $676200.00 |
| 2026-07-31 | WEN, LEANA | Director | Sale | 525 | $167.63 | $88005.75 |
| 2026-07-16 | THURMAN, ALEX R. | SVP & CHIEF FINANCIAL OFFICER | Sale | 10,000 | — | — |
| 2026-07-16 | THURMAN, ALEX R. | SVP & CHIEF FINANCIAL OFFICER | Buy | 10,000 | $38.68 | $386800.00 |
| 2026-07-09 | THURMAN, ALEX R. | SVP & CHIEF FINANCIAL OFFICER | Sale | 10,000 | — | — |
| 2026-07-09 | THURMAN, ALEX R. | SVP & CHIEF FINANCIAL OFFICER | Sale | 10,000 | $155.00 | $1.55M |
| 2026-07-06 | THURMAN, ALEX R. | SVP & CHIEF FINANCIAL OFFICER | Sale | 10,000 | $38.68 | $386800.00 |
| 2026-07-06 | THURMAN, ALEX R. | SVP & CHIEF FINANCIAL OFFICER | Sale | 10,000 | $150.00 | $1.50M |
| 2026-07-01 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 716 | $139.06 | $99566.96 |
| 2026-06-25 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 483 | $142.57 | $68861.31 |
| 2026-06-25 | GILLIAM, JOSEPH E | PRESIDENT & COO | Sale | 1,056 | $142.57 | $150553.92 |
| 2026-06-25 | BURNS, THOMAS WILLIAM | Director, CHAIRMAN & CEO | Sale | 4,059 | $142.57 | $578691.63 |
| 2026-06-16 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 1,537 | $130.68 | $200855.16 |
| 2026-05-28 | WEN, LEANA | Director | Buy | 2,987 | — | — |
| 2026-05-28 | WEN, LEANA | Director | Buy | 1,878 | — | — |
| 2026-05-28 | WEISNER, AIMEE S | Director | Buy | 2,987 | — | — |
| 2026-05-28 | WEISNER, AIMEE S | Director | Buy | 1,878 | — | — |
| 2026-05-28 | TORRES, DENICE | Director | Buy | 2,987 | — | — |
| 2026-05-28 | TORRES, DENICE | Director | Buy | 1,878 | — | — |
| 2026-05-28 | STAPLEY, MARC | Director | Buy | 2,987 | — | — |
| 2026-05-28 | STAPLEY, MARC | Director | Buy | 1,878 | — | — |
| 2026-05-28 | KLIMAN, GILBERT H | Director | Buy | 2,987 | — | — |
| 2026-05-28 | KLIMAN, GILBERT H | Director | Buy | 1,878 | — | — |
| 2026-05-28 | HOFFMEISTER, DAVID F | Director | Buy | 2,987 | — | — |
| 2026-05-28 | HOFFMEISTER, DAVID F | Director | Buy | 1,878 | — | — |
| 2026-05-28 | FOLEY, MARK J | Director | Buy | 2,987 | — | — |
| 2026-05-28 | FOLEY, MARK J | Director | Buy | 1,878 | — | — |
| 2026-05-26 | HOFFMEISTER, DAVID F | Director | Sale | 15,000 | $24.69 | $370350.00 |
| 2026-05-26 | HOFFMEISTER, DAVID F | Director | Buy | 15,000 | $24.69 | $370350.00 |
| 2026-05-14 | KLIMAN, GILBERT H | Director | Sale | 5,000 | $24.69 | $123450.00 |
| 2026-05-14 | KLIMAN, GILBERT H | Director | Buy | 5,000 | $24.69 | $123450.00 |
| 2026-05-11 | KLIMAN, GILBERT H | Director | Sale | 5,000 | $24.69 | $123450.00 |
| 2026-05-11 | KLIMAN, GILBERT H | Director | Buy | 5,000 | $24.69 | $123450.00 |
| 2026-05-01 | WEN, LEANA | Director | Sale | 1,700 | $143.35 | $243695.00 |
| 2026-05-01 | GILLIAM, JOSEPH E | PRESIDENT & COO | Sale | 19,573 | $143.54 | $2.81M |
| 2026-04-30 | THURMAN, ALEX R. | SVP & CHIEF FINANCIAL OFFICER | Sale | 10,000 | $38.68 | $386800.00 |
| 2026-04-30 | THURMAN, ALEX R. | SVP & CHIEF FINANCIAL OFFICER | Buy | 10,000 | $38.68 | $386800.00 |
| 2026-04-10 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 1,237 | $116.72 | $144382.64 |
| 2026-04-10 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 614 | $119.35 | $73280.90 |
| 2026-04-10 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 210 | $117.45 | $24664.50 |
| 2026-04-10 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 32 | $120.23 | $3847.36 |
| 2026-04-02 | THURMAN, ALEX R. | SVP & CHIEF FINANCIAL OFFICER | Sale | 1,589 | $109.60 | $174154.40 |
| 2026-04-02 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 1,831 | $109.60 | $200677.60 |
| 2026-04-02 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 1,146 | $109.60 | $125601.60 |
| 2026-04-02 | GILLIAM, JOSEPH E | PRESIDENT & COO | Sale | 3,169 | $109.60 | $347322.40 |
| 2026-04-02 | BURNS, THOMAS WILLIAM | Director, CHAIRMAN & CEO | Sale | 7,468 | $109.60 | $818492.80 |
| 2026-04-02 | BURNS, THOMAS WILLIAM | Director, CHAIRMAN & CEO | Sale | 2,469 | $109.60 | $270602.40 |
| 2026-04-01 | BURNS, THOMAS WILLIAM | Director, CHAIRMAN & CEO | Sale | 180,308 | — | — |
| 2026-03-31 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 5,798 | $109.60 | $635460.80 |
| 2026-03-25 | THURMAN, ALEX R. | SVP & CHIEF FINANCIAL OFFICER | Buy | 20,515 | — | — |
| 2026-03-25 | THURMAN, ALEX R. | SVP & CHIEF FINANCIAL OFFICER | Buy | 8,228 | — | — |
| 2026-03-25 | THURMAN, ALEX R. | SVP & CHIEF FINANCIAL OFFICER | Buy | 3,303 | — | — |
| 2026-03-25 | THURMAN, ALEX R. | SVP & CHIEF FINANCIAL OFFICER | Sale | 2,511 | $106.46 | $267321.06 |
| 2026-03-25 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Buy | 12,774 | — | — |
| 2026-03-25 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Buy | 11,693 | — | — |
| 2026-03-25 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Buy | 4,622 | — | — |
| 2026-03-25 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Buy | 3,692 | — | — |
| 2026-03-25 | GILLIAM, JOSEPH E | PRESIDENT & COO | Buy | 36,751 | — | — |
| 2026-03-25 | GILLIAM, JOSEPH E | PRESIDENT & COO | Buy | 21,955 | — | — |
| 2026-03-25 | GILLIAM, JOSEPH E | PRESIDENT & COO | Buy | 16,462 | — | — |
| 2026-03-25 | GILLIAM, JOSEPH E | PRESIDENT & COO | Buy | 17,792 | — | — |
| 2026-03-25 | GILLIAM, JOSEPH E | PRESIDENT & COO | Buy | 5,829 | — | — |
| 2026-03-25 | BURNS, THOMAS WILLIAM | Director, CHAIRMAN & CEO | Buy | 110,254 | $110,254.00 | $12.16B |
| 2026-03-25 | BURNS, THOMAS WILLIAM | Director, CHAIRMAN & CEO | Buy | 98,474 | $98,474.00 | $9.70B |
| 2026-03-25 | BURNS, THOMAS WILLIAM | Director, CHAIRMAN & CEO | Buy | 18,933 | $18,933.00 | $358.46M |
| 2026-03-25 | BURNS, THOMAS WILLIAM | Director, CHAIRMAN & CEO | Buy | 14,184 | — | — |
| 2026-03-25 | BURNS, THOMAS WILLIAM | Director, CHAIRMAN & CEO | Buy | 9,380 | — | — |
| 2026-03-24 | THURMAN, ALEX R. | SVP & CHIEF FINANCIAL OFFICER | Sale | 2,020 | $105.23 | $212564.60 |
| 2026-03-24 | THURMAN, ALEX R. | SVP & CHIEF FINANCIAL OFFICER | Sale | 1,521 | $105.24 | $160070.04 |
| 2026-03-24 | NAVRATIL, TOMAS | CHIEF DEVELOPMENT OFFICER | Sale | 2,546 | $105.23 | $267915.58 |
| 2026-03-24 | GILLIAM, JOSEPH E | PRESIDENT & COO | Sale | 7,388 | $105.23 | $777439.24 |
| 2026-03-24 | GILLIAM, JOSEPH E | PRESIDENT & COO | Sale | 4,926 | $105.23 | $518362.98 |
| 2026-03-24 | BURNS, THOMAS WILLIAM | Director, CHAIRMAN & CEO | Sale | 2,744 | $105.23 | $288751.12 |
| 2026-03-23 | THURMAN, ALEX R. | SVP & CHIEF FINANCIAL OFFICER | Sale | 1,230 | $106.84 | $131413.20 |
Frequently asked questions
Are GKOS insiders buying or selling?
Over the transactions on record, GKOS insiders have been net sellers, with about $27.88M in stock sold across 57 sales, against 12 open-market purchases.
Does insider selling at GKOS mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which GKOS insiders are selling the most?
Recent selling is concentrated in a few names. GILLIAM, JOSEPH E accounts for the largest share on record, with about $15.39M sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.