Navratil Tomas — SEC Form 4 filings
SEC reporting owner CIK 1920053. 36 Form 4 filings on record with FilingPulse; latest filed 2026-09-18.
Transaction summary — filings shown
Covers all 36 filings on record, filed 2024-01-16 to 2026-09-18. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 25 legs across 9 filings — 29,653 shares, $4,373,775 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 47.
- Largest priced transaction: sale of 7,643 shares @ $180.25 ($1,377,651) in GLAUKOS Corp, filed 2026-09-01.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| GLAUKOS Corp (GKOS) | CHIEF DEVELOPMENT OFFICER | 36 | — | 25 legs · 29,653 sh · $4,373,775 | 47 |
Form 4 filings — Navratil Tomas
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-18 | 4 | GLAUKOS Corp (GKOS) | Sale (S): 103 @ $163.20 · Sale (S): 345 @ $164.60 · Sale (S): 191 @ $166.20 · Sale (S): 460 @ $167.32 · Sale (S): 120 @ $168.38 · Sale (S): 234 @ $170.95 · +1 more | EDGAR |
| 2026-09-01 | 4 | GLAUKOS Corp (GKOS) | Sale (S): 7,643 @ $180.25 · Sale (S): 6,091 @ $181.19 · Sale (S): 10 @ $182.50 | EDGAR |
| 2026-07-08 | 4 | GLAUKOS Corp (GKOS) | Sale (S): 716 @ $139.06 | EDGAR |
| 2026-06-29 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 483 @ $142.57 | EDGAR |
| 2026-06-18 | 4 | GLAUKOS Corp (GKOS) | Sale (S): 1,537 @ $130.68 | EDGAR |
| 2026-04-14 | 4 | GLAUKOS Corp (GKOS) | Sale (S): 1,237 @ $116.72 · Sale (S): 210 @ $117.45 · Sale (S): 614 @ $119.35 · Sale (S): 32 @ $120.23 | EDGAR |
| 2026-04-03 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 1,146 @ $109.60 · Tax withholding (F): 1,831 @ $109.60 | EDGAR |
| 2026-04-02 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 5,798 @ $109.60 | EDGAR |
| 2026-03-27 | 4 | GLAUKOS Corp (GKOS) | Grant/award (A): 4,622 @ $0 · Grant/award (A): 11,693 @ $0 · Grant/award (A): 3,692 @ $0 · Grant/award (A): 12,774 @ $0 | EDGAR |
| 2026-03-25 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 2,628 @ $106.84 · Tax withholding (F): 2,546 @ $105.23 | EDGAR |
| 2026-03-19 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 958 @ $98.94 · Sale (S): 460 @ $97.33 · Sale (S): 299 @ $98.21 · Sale (S): 272 @ $99.05 | EDGAR |
| 2026-03-17 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 1,074 @ $97.02 | EDGAR |
| 2026-03-09 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 361 @ $112.10 | EDGAR |
| 2026-02-26 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 396 @ $119.17 | EDGAR |
| 2025-12-31 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 510 @ $114.24 | EDGAR |
| 2025-12-15 | 4 | GLAUKOS Corp (GKOS) | Grant/award (A): 2,054 @ $0 | EDGAR |
| 2025-09-24 | 4 | GLAUKOS Corp (GKOS) | Sale (S): 23 @ $82.79 · Sale (S): 218 @ $83.76 · Sale (S): 276 @ $84.70 · Tax withholding (F): 483 @ $84.69 | EDGAR |
| 2025-09-22 | 4 | GLAUKOS Corp (GKOS) | Grant/award (A): 1,948 @ $0 · Tax withholding (F): 510 @ $83.47 | EDGAR |
| 2025-09-12 | 4 | GLAUKOS Corp (GKOS) | Sale (S): 3,194 @ $87.98 · Sale (S): 1,948 @ $88.61 | EDGAR |
| 2025-05-28 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 483 @ $96.97 | EDGAR |
| 2025-05-09 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 510 @ $88.24 | EDGAR |
| 2025-04-02 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 510 @ $98.42 · Tax withholding (F): 484 @ $97.09 | EDGAR |
| 2025-03-27 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 5,112 @ $107.61 · Tax withholding (F): 1,830 @ $96.60 | EDGAR |
| 2025-03-17 | 4 | GLAUKOS Corp (GKOS) | Grant/award (A): 1,948 @ $0 · Grant/award (A): 3,691 @ $0 · Grant/award (A): 12,422 @ $0 · Tax withholding (F): 958 @ $102.19 | EDGAR |
| 2025-02-19 | 4 | GLAUKOS Corp (GKOS) | Sale (S): 3,416 @ $147.14 | EDGAR |
| 2025-01-08 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 1,185 @ $149.68 | EDGAR |
| 2025-01-02 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 509 @ $145.14 · Tax withholding (F): 484 @ $138.93 · Grant/award (A): 2,054 @ $0 · Tax withholding (F): 255 @ $151.16 | EDGAR |
| 2024-10-16 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 510 @ $130.07 | EDGAR |
| 2024-09-23 | 4 | GLAUKOS Corp (GKOS) | Grant/award (A): 4,108 @ $0 | EDGAR |
| 2024-08-08 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 520 @ $120.73 | EDGAR |
| 2024-06-26 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 260 @ $93.57 · Tax withholding (F): 260 @ $92.69 | EDGAR |
| 2024-04-03 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 494 @ $93.10 | EDGAR |
| 2024-04-01 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 2,418 @ $88.08 · Tax withholding (F): 2,603 @ $88.72 | EDGAR |
| 2024-03-27 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 459 @ $87.16 | EDGAR |
| 2024-03-18 | 4 | GLAUKOS Corp (GKOS) | Grant/award (A): 1,950 @ $0 · Grant/award (A): 1,027 @ $0 · Grant/award (A): 11,075 @ $0 | EDGAR |
| 2024-01-16 | 4 | GLAUKOS Corp (GKOS) | Tax withholding (F): 1,209 @ $77.08 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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