As of the latest Form 4 filed Jul 8, 2026.
What Glaukos Corp insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 64 most recent filings for GKOS.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-07-08 | 2026-07-06 | Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER | SSale | −10.0K | $150.00 | $1.50M | Yes (planned) | Form 4 ↗ |
| 2026-07-08 | 2026-07-06 | Thurman Alex R., SVP & CHIEF FINANCIAL OFFICER | MExercise | +10.0K | $38.68 | $387K | Yes (planned) | Form 4 ↗ |
| 2026-07-08 | 2026-07-01 | Navratil Tomas CHIEF DEVELOPMENT OFFICER | SSale | −716.00 | $139.06 | $99.6K | Yes (planned) | Form 4 ↗ |
| 2026-06-29 | 2026-06-25 | Navratil Tomas CHIEF DEVELOPMENT OFFICER | FTax | −483.00 | $142.57 | $68.9K | No | Form 4 ↗ |
| 2026-06-29 | 2026-06-25 | Gilliam Joseph E PRESIDENT & COO | FTax | −1.06K | $142.57 | $151K | No | Form 4 ↗ |
| 2026-06-29 | 2026-06-25 | Burns Thomas William CHAIRMAN & CEO | FTax | −4.06K | $142.57 | $579K | No | Form 4 ↗ |
| 2026-06-18 | 2026-06-16 | Navratil Tomas CHIEF DEVELOPMENT OFFICER | SSale | −1.54K | $130.68 | $201K | Yes (planned) | Form 4 ↗ |
| 2026-06-01 | 2026-05-28 | WEN LEANA Director | AAward | +1.88K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-01 | 2026-05-28 | Torres Denice Director | AAward | +1.88K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-01 | 2026-05-28 | Stapley Marc Director | AAward | +1.88K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-01 | 2026-05-28 | Foley Mark J Director | AAward | +1.88K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-01 | 2026-05-28 | Hoffmeister David F Director | AAward | +1.88K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-01 | 2026-05-28 | Kliman Gilbert H Director | AAward | +1.88K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-01 | 2026-05-28 | WEISNER AIMEE S Director | AAward | +1.88K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-28 | 2026-05-26 | Hoffmeister David F Director | MExercise | +15.0K | $24.69 | $370K | No | Form 4 ↗ |
| 2026-05-18 | 2026-05-14 | Kliman Gilbert H Director | SSale | −5.00K | $140.76 | $704K | No | Form 4 ↗ |
| 2026-05-18 | 2026-05-14 | Kliman Gilbert H, Director | MExercise | +5.00K | $24.69 | $123K | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-11 | Kliman Gilbert H Director | SSale | −5.00K | $135.00 | $675K | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-11 | Kliman Gilbert H, Director | MExercise | +5.00K | $24.69 | $123K | No | Form 4 ↗ |
| 2026-05-04 | 2026-05-01 | WEN LEANA Director | SSale | −1.70K | $143.35 | $244K | No | Form 4 ↗ |
| 2026-05-04 | 2026-05-01 | Gilliam Joseph E PRESIDENT & COO | SSale | −19.6K | $143.54 | $2.81M | No | Form 4 ↗ |
| 2026-05-04 | 2026-04-30 | Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER | SSale | −10.0K | $140.00 | $1.40M | Yes (planned) | Form 4 ↗ |
| 2026-05-04 | 2026-04-30 | Thurman Alex R., SVP & CHIEF FINANCIAL OFFICER | MExercise | +10.0K | $38.68 | $387K | Yes (planned) | Form 4 ↗ |
| 2026-04-14 | 2026-04-10 | Navratil Tomas CHIEF DEVELOPMENT OFFICER | SSale | −32.00 | $120.23 | $3.85K | Yes (planned) | Form 4 ↗ |
| 2026-04-14 | 2026-04-10 | Navratil Tomas, CHIEF DEVELOPMENT OFFICER | SSale | −614.00 | $119.35 | $73.3K | Yes (planned) | Form 4 ↗ |
| 2026-04-14 | 2026-04-10 | Navratil Tomas, CHIEF DEVELOPMENT OFFICER | SSale | −210.00 | $117.45 | $24.7K | Yes (planned) | Form 4 ↗ |
| 2026-04-14 | 2026-04-10 | Navratil Tomas, CHIEF DEVELOPMENT OFFICER | SSale | −1.24K | $116.72 | $144K | Yes (planned) | Form 4 ↗ |
| 2026-04-03 | 2026-04-02 | Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER | FTax | −1.59K | $109.60 | $174K | No | Form 4 ↗ |
| 2026-04-03 | 2026-04-02 | Navratil Tomas CHIEF DEVELOPMENT OFFICER | FTax | −1.83K | $109.60 | $201K | No | Form 4 ↗ |
| 2026-04-03 | 2026-04-02 | Navratil Tomas, CHIEF DEVELOPMENT OFFICER | FTax | −1.15K | $109.60 | $126K | No | Form 4 ↗ |
| 2026-04-03 | 2026-04-02 | Gilliam Joseph E PRESIDENT & COO | FTax | −3.17K | $109.60 | $347K | No | Form 4 ↗ |
| 2026-04-03 | 2026-04-02 | Burns Thomas William CHAIRMAN & CEO | FTax | −7.47K | $109.60 | $818K | No | Form 4 ↗ |
| 2026-04-03 | 2026-04-02 | Burns Thomas William, CHAIRMAN & CEO | FTax | −2.47K | $109.60 | $271K | No | Form 4 ↗ |
| 2026-04-03 | 2026-04-01 | Burns Thomas William, CHAIRMAN & CEO | GGift | +180K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-04-03 | 2026-04-01 | Burns Thomas William, CHAIRMAN & CEO | GGift | −180K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-27 | 2026-03-25 | Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER | AAward | +3.30K | $0.00 | $0.00 | Yes (planned) | Form 4 ↗ |
| 2026-03-27 | 2026-03-25 | Thurman Alex R., SVP & CHIEF FINANCIAL OFFICER | SSale | −2.51K | $106.46 | $267K | Yes (planned) | Form 4 ↗ |
| 2026-03-27 | 2026-03-25 | Navratil Tomas CHIEF DEVELOPMENT OFFICER | AAward | +12.8K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-27 | 2026-03-25 | Navratil Tomas, CHIEF DEVELOPMENT OFFICER | AAward | +3.69K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-27 | 2026-03-25 | Navratil Tomas, CHIEF DEVELOPMENT OFFICER | AAward | +11.7K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-27 | 2026-03-25 | Navratil Tomas, CHIEF DEVELOPMENT OFFICER | AAward | +4.62K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-27 | 2026-03-25 | Gilliam Joseph E PRESIDENT & COO | AAward | +17.8K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-27 | 2026-03-25 | Gilliam Joseph E, PRESIDENT & COO | AAward | +5.83K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-27 | 2026-03-25 | Burns Thomas William CHAIRMAN & CEO | AAward | +14.2K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-27 | 2026-03-25 | Burns Thomas William, CHAIRMAN & CEO | AAward | +9.38K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER | FTax | −2.02K | $105.23 | $213K | Yes (planned) | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Thurman Alex R., SVP & CHIEF FINANCIAL OFFICER | SSale | −1.52K | $105.24 | $160K | Yes (planned) | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Navratil Tomas CHIEF DEVELOPMENT OFFICER | FTax | −2.55K | $105.23 | $268K | No | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Gilliam Joseph E PRESIDENT & COO | FTax | −7.39K | $105.23 | $777K | No | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Gilliam Joseph E, PRESIDENT & COO | FTax | −4.93K | $105.23 | $518K | No | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Burns Thomas William CHAIRMAN & CEO | FTax | −2.74K | $105.23 | $289K | No | Form 4 ↗ |
| 2026-03-25 | 2026-03-23 | Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER | FTax | −1.23K | $106.84 | $131K | Yes (planned) | Form 4 ↗ |
| 2026-03-25 | 2026-03-23 | Navratil Tomas CHIEF DEVELOPMENT OFFICER | FTax | −2.63K | $106.84 | $281K | No | Form 4 ↗ |
| 2026-03-25 | 2026-03-23 | Gilliam Joseph E PRESIDENT & COO | FTax | −2.80K | $106.84 | $300K | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-17 | Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER | SSale | −625.00 | $99.15 | $62.0K | Yes (planned) | Form 4 ↗ |
| 2026-03-19 | 2026-03-16 | Thurman Alex R., SVP & CHIEF FINANCIAL OFFICER | FTax | −614.00 | $98.94 | $60.7K | Yes (planned) | Form 4 ↗ |
| 2026-03-19 | 2026-03-16 | Navratil Tomas CHIEF DEVELOPMENT OFFICER | SSale | −272.00 | $99.05 | $26.9K | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-16 | Navratil Tomas, CHIEF DEVELOPMENT OFFICER | SSale | −299.00 | $98.21 | $29.4K | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-16 | Navratil Tomas, CHIEF DEVELOPMENT OFFICER | SSale | −460.00 | $97.33 | $44.8K | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-16 | Navratil Tomas, CHIEF DEVELOPMENT OFFICER | FTax | −958.00 | $98.94 | $94.8K | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-16 | Gilliam Joseph E PRESIDENT & COO | FTax | −1.19K | $98.94 | $118K | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-16 | Burns Thomas William CHAIRMAN & CEO | FTax | −2.80K | $98.94 | $277K | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Navratil Tomas CHIEF DEVELOPMENT OFFICER | FTax | −361.00 | $112.10 | $40.5K | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Burns Thomas William CHAIRMAN & CEO | FTax | −1.10K | $112.10 | $123K | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also GKOS’s full analysis or the market-wide insider trading feed. The tabs above jump to GKOS’s other SEC data.
Source: SEC Form 4 filings for GKOS, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.