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GKOS · GLAUKOS Corp

Healthcare · −0.5% on Oct 16

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Updated Oct 17 · 9 feeds behind: FDA drug approvals, 3 days, and 8 more · Every feed →

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The market view

Price chart

The interactive GKOS chart (by TradingView) loads here.

Our take

None of our tested rules has picked GKOS yet.

The 0–100 score for GKOS
Members see one number for how strongly these rules agree on GKOS, and the day each rule fired. Better-tested rules count more, and so do different kinds of filings that point the same way.
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Compare with this company’s history

Is disclosure activity unusual?

See how many different insiders or members of Congress reported purchases or sales of GKOS. Each bar covers 28 days, by disclosure date. Several trades by one person count once in each group and period.

Latest period: Sep 22, 2026–Oct 19, 2026 · UTC dates · today is excluded

Insider sales

Short history

Only 3 earlier periods are on file to compare with. We need at least 6 full periods before calling a count unusual.

Latest 28 days
1
Earlier median
2
Earlier range
1–4
Distinct filers per 28 daysScale: 0–4
Oct 21, 2025Oct 19, 2026
Earlier periodsLatest 28 daysEarlier median 2Limited or missing history

Who appears in the latest period?

Up to three filers; one example disclosure each.

Inspect this period’s filings

The history behind this view

First stored company disclosure: Jun 18, 2026. Newest disclosure across this feed: Oct 16, 2026.

Earlier periods in the comparison: 3. Outlined periods are missing data, so they are left out of the comparison. The chart scale changes with the category.

Exact counts, dates and filings for all four categories
Insider purchases · Short history

Only 3 earlier periods are on file to compare with. We need at least 6 full periods before calling a count unusual. Earlier median: 0; range: 0–0.

Insider purchases: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 21, 2025–Nov 17, 2025—Unavailable
Nov 18, 2025–Dec 15, 2025—Unavailable
Dec 16, 2025–Jan 12, 2026—Unavailable
Jan 13, 2026–Feb 9, 2026—Unavailable
Feb 10, 2026–Mar 9, 2026—Unavailable
Mar 10, 2026–Apr 6, 2026—Unavailable
Apr 7, 2026–May 4, 2026—Unavailable
May 5, 2026–Jun 1, 2026—Unavailable
Jun 2, 2026–Jun 29, 20260Partial; excluded
Jun 30, 2026–Jul 27, 20260Within stored history
Jul 28, 2026–Aug 24, 20260Within stored history
Aug 25, 2026–Sep 21, 20260Within stored history
Sep 22, 2026–Oct 19, 2026Latest period0Within stored history
Insider sales · Short history

Only 3 earlier periods are on file to compare with. We need at least 6 full periods before calling a count unusual. Earlier median: 2; range: 1–4.

Insider sales: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 21, 2025–Nov 17, 2025—Unavailable
Nov 18, 2025–Dec 15, 2025—Unavailable
Dec 16, 2025–Jan 12, 2026—Unavailable
Jan 13, 2026–Feb 9, 2026—Unavailable
Feb 10, 2026–Mar 9, 2026—Unavailable
Mar 10, 2026–Apr 6, 2026—Unavailable
Apr 7, 2026–May 4, 2026—Unavailable
May 5, 2026–Jun 1, 2026—Unavailable
Jun 2, 2026–Jun 29, 20261Partial; excluded
Jun 30, 2026–Jul 27, 20262Within stored history
Jul 28, 2026–Aug 24, 20264Within stored history
Aug 25, 2026–Sep 21, 20261Within stored history
Sep 22, 2026–Oct 19, 2026Latest period1Within stored history
Congress purchases · History unavailable

No completed-period disclosures for this company are available in this source. Missing history is not zero activity. Earlier median: —; range: unavailable.

Congress purchases: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 21, 2025–Nov 17, 2025—Unavailable
Nov 18, 2025–Dec 15, 2025—Unavailable
Dec 16, 2025–Jan 12, 2026—Unavailable
Jan 13, 2026–Feb 9, 2026—Unavailable
Feb 10, 2026–Mar 9, 2026—Unavailable
Mar 10, 2026–Apr 6, 2026—Unavailable
Apr 7, 2026–May 4, 2026—Unavailable
May 5, 2026–Jun 1, 2026—Unavailable
Jun 2, 2026–Jun 29, 2026—Unavailable
Jun 30, 2026–Jul 27, 2026—Unavailable
Jul 28, 2026–Aug 24, 2026—Unavailable
Aug 25, 2026–Sep 21, 2026—Unavailable
Sep 22, 2026–Oct 19, 2026Latest period—Unavailable
Congress sales · History unavailable

No completed-period disclosures for this company are available in this source. Missing history is not zero activity. Earlier median: —; range: unavailable.

Congress sales: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 21, 2025–Nov 17, 2025—Unavailable
Nov 18, 2025–Dec 15, 2025—Unavailable
Dec 16, 2025–Jan 12, 2026—Unavailable
Jan 13, 2026–Feb 9, 2026—Unavailable
Feb 10, 2026–Mar 9, 2026—Unavailable
Mar 10, 2026–Apr 6, 2026—Unavailable
Apr 7, 2026–May 4, 2026—Unavailable
May 5, 2026–Jun 1, 2026—Unavailable
Jun 2, 2026–Jun 29, 2026—Unavailable
Jun 30, 2026–Jul 27, 2026—Unavailable
Jul 28, 2026–Aug 24, 2026—Unavailable
Aug 25, 2026–Sep 21, 2026—Unavailable
Sep 22, 2026–Oct 19, 2026Latest period—Unavailable
How to read this comparison

The median is the middle count in up to 12 earlier, non-overlapping 28-day periods; the range runs from the smallest to the largest count. The latest period is excluded from both. A comparison needs at least 6 earlier periods, including 3 with activity. The feed’s latest disclosure must be within 7 days of the current period’s end. This freshness check does not verify complete collection.

Insiders include individuals and reporting entities; only purchase and sale codes enter this view. Congress counts reporting members, including their disclosed family transactions. The same filer can appear in purchases and sales, so these categories should not be added into a net count.

These are stored disclosures, not a complete measure of trading. Reporting delays and collection gaps can change the comparison. More activity does not identify a motive or predict a stock’s return.

Company timeline

What has been happening?

May 1, 2026–Oct 16, 2026. Select a month in a category to inspect its records.

Company filings

Insiders

Insiders · Oct 2026

  1. Disclosed
    Tomas Navratil · Sale

    Transaction dated Oct 5, 2026

  2. Disclosed
    Tomas Navratil · Sale

    Transaction dated Oct 5, 2026

  3. Disclosed
    Tomas Navratil · Sale

    Transaction dated Oct 5, 2026

  4. Filed
All 35 records in this snapshot
  1. Disclosed
    Tomas Navratil · Sale

    Transaction dated Oct 5, 2026

  2. Disclosed
    Tomas Navratil · Sale

    Transaction dated Oct 5, 2026

  3. Disclosed
    Tomas Navratil · Sale

    Transaction dated Oct 5, 2026

  4. Filed
  5. Disclosed
    Tomas Navratil · Sale

    Transaction dated Sep 25, 2026

  6. Disclosed
    Tomas Navratil · Sale

    Transaction dated Sep 25, 2026

  7. Disclosed
    Tomas Navratil · Sale

    Transaction dated Sep 25, 2026

  8. Disclosed
    Tomas Navratil · Sale

    Transaction dated Sep 25, 2026

  9. Filed
  10. Disclosed
    Tomas Navratil · Sale

    Transaction dated Sep 16, 2026

  11. Disclosed
    Tomas Navratil · Sale

    Transaction dated Sep 16, 2026

  12. Disclosed
    Tomas Navratil · Sale

    Transaction dated Sep 16, 2026

  13. Disclosed
    Tomas Navratil · Sale

    Transaction dated Sep 16, 2026

  14. Disclosed
    Tomas Navratil · Sale

    Transaction dated Sep 16, 2026

  15. Disclosed
    Tomas Navratil · Sale

    Transaction dated Sep 16, 2026

  16. Disclosed
    Tomas Navratil · Sale

    Transaction dated Sep 16, 2026

  17. Filed
  18. Disclosed
    Tomas Navratil · Sale

    Transaction dated Aug 28, 2026

  19. Disclosed
    Tomas Navratil · Sale

    Transaction dated Aug 28, 2026

  20. Disclosed
    Tomas Navratil · Sale

    Transaction dated Aug 28, 2026

  21. Filed
  22. Disclosed
    Gilbert H Kliman · Sale

    Transaction dated Aug 19, 2026

  23. Filed
  24. Disclosed
    Joseph E Gilliam · Sale

    Transaction dated Aug 11, 2026

  25. Disclosed
    Joseph E Gilliam · Sale

    Transaction dated Aug 11, 2026

  26. Disclosed
    Alex R. Thurman · Sale

    Transaction dated Aug 7, 2026

  27. Disclosed
    Leana Wen · Sale

    Transaction dated Jul 31, 2026

  28. Filed
  29. Filed
  30. Filed
  31. Disclosed
    Alex R. Thurman · Sale

    Transaction dated Jul 16, 2026

  32. Disclosed
    Alex R. Thurman · Sale

    Transaction dated Jul 9, 2026

  33. Disclosed
    Alex R. Thurman · Sale

    Transaction dated Jul 6, 2026

  34. Filed
  35. Filed

Month counts include every record on file. The lists show the newest records on this page. A dash means none on file that month. Trades use disclosure dates; contract dates follow the source record. Nearby events do not establish the cause of a price move.

Who's buying and selling · last 90 days

Congress

No Congress trades on GKOS disclosed in the last 90 days.

See every Congress trade on GKOS →

Company insiders

0 buys · 9 sells (23 filed lots) · $19.8M sold

  1. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$53.9Kdisclosed Oct 7 · filed 2 days after the trade
  2. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$51.7Kdisclosed Oct 7 · filed 2 days after the trade
  3. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$146Kdisclosed Oct 7 · filed 2 days after the trade
  4. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$20.8Kdisclosed Sep 28 · filed 3 days after the trade
  5. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$168Kdisclosed Sep 28 · filed 3 days after the trade
  6. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$25.3Kdisclosed Sep 28 · filed 3 days after the trade
  7. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$35.3Kdisclosed Sep 28 · filed 3 days after the trade
  8. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$77Kdisclosed Sep 18 · filed 2 days after the trade
  9. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$31.7Kdisclosed Sep 18 · filed 2 days after the trade
  10. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$20.2Kdisclosed Sep 18 · filed 2 days after the trade
See every insider trade on GKOS →

Filings & events

Company filings (8-K) 68

Events the company must report to the SEC within days — results, deals, departures, restatements.

What it files 8-Ks about

  • Shared information with investors · item 7.0122
  • Quarterly or yearly results · item 2.0213
  • Shareholder vote results · item 5.073
  • Sold shares privately · item 3.022
  • Other events · item 8.012
  • Directors or officers joined, left or got new pay · item 5.021

Filing red flags 17

Warning signs in the company's own SEC filings — going-concern doubts, control weaknesses, staff comment letters, late filings, restatements, Wells notices, clinical holds, dividend cuts.

FDA and clinical trials 9

Drug approvals, recalls, clinical-trial updates and FDA advisory meetings.

Lobbying 19

Lobbying reports filed with the Senate for the company.

$815K across 19 reports

Issues named in the most reports

  • Medicare/Medicaid 19
  • Health Issues 13
  • Taxation/Internal Revenue Code 8
  • Medical/Disease Research/Clinical Labs 6

Planned insider sales (Form 144) 82

Notices insiders file before they sell certain shares, such as ones they got straight from the company.

8 in the last 90 days · 82 notices on file

The notices on file don't give the sale's size; each sale shows up under company insiders once it is reported.

5% owners (13D / 13G) 5

Investors who reported owning 5% or more — 13D for owners who may push for changes, 13G for owners who just hold.

Push for changes, or just hold?

  • 13D, may push for changes: 0 filings
  • 13G, just holds: 5 filings

Filed by Vanguard Capital Management LLC · Vanguard Portfolio Management LLC · Janus Henderson Group PLC · Primecap Management Co/Ca/

Biggest named funds (13F)

The largest GKOS holdings among the well-known funds whose quarterly 13F filings we read — opens here.

Every disclosed trade on GKOS

  1. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$53.9Kdisclosed Oct 7 · filed 2 days after the trade
  2. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$51.7Kdisclosed Oct 7 · filed 2 days after the trade
  3. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$146Kdisclosed Oct 7 · filed 2 days after the trade
  4. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$20.8Kdisclosed Sep 28 · filed 3 days after the trade
  5. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$168Kdisclosed Sep 28 · filed 3 days after the trade
  6. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$25.3Kdisclosed Sep 28 · filed 3 days after the trade
  7. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$35.3Kdisclosed Sep 28 · filed 3 days after the trade
  8. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$77Kdisclosed Sep 18 · filed 2 days after the trade
  9. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$31.7Kdisclosed Sep 18 · filed 2 days after the trade
  10. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$20.2Kdisclosed Sep 18 · filed 2 days after the trade
  11. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$40Kdisclosed Sep 18 · filed 2 days after the trade
  12. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$688disclosed Sep 18 · filed 2 days after the trade
  13. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$56.8Kdisclosed Sep 18 · filed 2 days after the trade
  14. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$16.8Kdisclosed Sep 18 · filed 2 days after the trade
  15. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$1.4Mdisclosed Sep 1 · filed 4 days after the trade
  16. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$1.1Mdisclosed Sep 1 · filed 4 days after the trade
  17. ▼ SELLTomas Navratil Chief Development OfficerGKOS GLAUKOS Corp$1.8Kdisclosed Sep 1 · filed 4 days after the trade
  18. ▼ SELLGilbert H Kliman DirectorGKOS GLAUKOS Corp$475Kdisclosed Aug 20 · filed 1 day after the trade
  19. ▼ SELLJoseph E Gilliam President & COOGKOS GLAUKOS Corp$5Mdisclosed Aug 13 · filed 2 days after the trade
  20. ▼ SELLJoseph E Gilliam President & COOGKOS GLAUKOS Corp$5.8Mdisclosed Aug 13 · filed 2 days after the trade
  21. ▼ SELLAlex R. Thurman SVP & Chief Financial OfficerGKOS GLAUKOS Corp$3.6Mdisclosed Aug 11 · filed 4 days after the trade
  22. ▼ SELLLeana Wen DirectorGKOS GLAUKOS Corp$88Kdisclosed Aug 3 · filed 3 days after the trade
  23. ▼ SELLAlex R. Thurman SVP & Chief Financial OfficerGKOS GLAUKOS Corp$1.6Mdisclosed Jul 21 · filed 5 days after the trade · late
  24. ▼ SELLAlex R. Thurman SVP & Chief Financial OfficerGKOS GLAUKOS Corp$1.6Mdisclosed Jul 13 · filed 4 days after the trade
  25. ▼ SELLAlex R. Thurman SVP & Chief Financial OfficerGKOS GLAUKOS Corp$1.5Mdisclosed Jul 8 · filed 2 days after the trade
See all 27 trades on GKOS →
People & votes

Which members of Congress traded GKOS, sponsored bills that touch it and voted on them — opens here.