Thurman Alex R.
Officer · GKOS
As of 2026-09-16, Thurman Alex R. has 40 Form 4 transactions on record across 1 company — 27 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Pattern in the record: open-market sales filed in March in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-08-07 | GKOS | Sale | 20,000 @ $180.13 | $3.6M | −31.3% of holding | 43,906 | Form 4 |
| 2026-07-16 | GKOS | Sale | 10,000 @ $160.00 | $1.6M | −18.6% of holding | 43,906 | Form 4 |
| 2026-07-09 | GKOS | Sale | 10,000 @ $155.00 | $1.6M | −18.6% of holding | 43,681 | Form 4 |
| 2026-07-06 | GKOS | Sale | 10,000 @ $150.00 | $1.5M | −18.6% of holding | 43,681 | Form 4 |
| 2026-04-30 | GKOS | Sale | 10,000 @ $140.00 | $1.4M | −18.6% of holding | 43,681 | Form 4 |
| 2026-03-25 | GKOS | Sale | 2,511 @ $106.46 | $267K | −5.6% of holding | 41,967 | Form 4 |
| 2026-03-24 | GKOS | Sale | 1,521 @ $105.24 | $160K | −3.2% of holding | 46,498 | Form 4 |
| 2026-03-17 | GKOS | Sale | 625 @ $99.15 | $62K | −1.3% of holding | 49,249 | Form 4 |
| 2025-11-25 | GKOS | Sale | 315 @ $105.00 | $33K | −0.6% of holding | 50,488 | Form 4 |
| 2025-03-25 | GKOS | Sale | 1,059 @ $106.56 | $113K | −1.9% of holding | 53,892 | Form 4 |
| 2025-03-25 | GKOS | Sale | 430 @ $107.44 | $46K | −0.8% of holding | 53,462 | Form 4 |
| 2025-03-25 | GKOS | Sale | 31 @ $108.14 | $3K | −0.1% of holding | 53,431 | Form 4 |
28 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-08-07 | GKOS | Option exercise | 20,000 | 63,906 | Form 4 |
| 2026-08-07 | GKOS | Option exercise | 20,000 | 0 | Form 4 |
| 2026-07-16 | GKOS | Option exercise | 10,000 | 53,906 | Form 4 |
| 2026-07-16 | GKOS | Option exercise | 10,000 | 10,000 | Form 4 |
| 2026-07-09 | GKOS | Option exercise | 10,000 | 53,681 | Form 4 |
| 2026-07-09 | GKOS | Option exercise | 10,000 | 10,000 | Form 4 |
| 2026-07-06 | GKOS | Option exercise | 10,000 | 20,000 | Form 4 |
| 2026-07-06 | GKOS | Option exercise | 10,000 | 53,681 | Form 4 |
| 2026-04-30 | GKOS | Option exercise | 10,000 | 30,000 | Form 4 |
| 2026-04-30 | GKOS | Option exercise | 10,000 | 53,681 | Form 4 |
| 2026-04-02 | GKOS | Withheld for tax | 1,589 | 43,681 | Form 4 |
| 2026-03-25 | GKOS | Award / grant | 20,515 | 20,515 | Form 4 |
| 2026-03-25 | GKOS | Award / grant | 3,303 | 45,270 | Form 4 |
| 2026-03-25 | GKOS | Award / grant | 8,228 | 45,738 | Form 4 |
| 2026-03-24 | GKOS | Withheld for tax | 2,020 | 44,478 | Form 4 |
| 2026-03-23 | GKOS | Withheld for tax | 1,230 | 48,019 | Form 4 |
| 2026-03-16 | GKOS | Withheld for tax | 614 | 49,874 | Form 4 |
| 2025-12-11 | GKOS | Award / grant | 3,660 | 37,510 | Form 4 |
| 2025-04-21 | GKOS | Withheld for tax | 2,484 | 50,636 | Form 4 |
| 2025-04-01 | GKOS | Withheld for tax | 311 | 53,120 | Form 4 |
| 2025-03-25 | GKOS | Withheld for tax | 3,252 | 56,543 | Form 4 |
| 2025-03-25 | GKOS | Withheld for tax | 1,592 | 54,951 | Form 4 |
| 2025-03-25 | GKOS | Award / grant | 19,601 | 19,601 | Form 4 |
| 2025-03-17 | GKOS | Withheld for tax | 489 | 59,795 | Form 4 |
| 2025-03-13 | GKOS | Award / grant | 19,849 | 19,849 | Form 4 |
| 2025-03-13 | GKOS | Award / grant | 3,303 | 55,274 | Form 4 |
| 2025-03-13 | GKOS | Award / grant | 5,010 | 60,284 | Form 4 |
| 2024-12-30 | GKOS | Award / grant | 3,660 | 33,852 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.