Alex R. Thurman
CIK 1920061 · View on SEC EDGAR ↗
Insider
First SEC filing: April 5, 2022 · Latest: April 5, 2022
On this page
Insider at
Insider transactions
0 buys (P)
4 sells (S)
Net:
$-8,252,600
+ 30 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
30 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 7, 2026 | GKOS | S 10b5-1 | 20,000 | $180.13 | $3,602,600 | 43,906 Direct | -31.30% | Disposed | 2.6% (price as of 2026-08-21) |
| July 16, 2026 | GKOS | S 10b5-1 | 10,000 | $160.00 | $1,600,000 | 43,906 Direct | -18.55% | Disposed | 15.5% (price as of 2026-08-21) |
| July 9, 2026 | GKOS | S 10b5-1 | 10,000 | $155.00 | $1,550,000 | 43,681 Direct | -18.63% | Disposed | 19.2% (price as of 2026-08-21) |
| July 6, 2026 | GKOS | S 10b5-1 | 10,000 | $150.00 | $1,500,000 | 43,681 Direct | -18.63% | Disposed | 23.2% (price as of 2026-08-21) |
| May 10, 2024 | GKOS | S 10b5-1 | 316 | $110.43 | $34,896 | 51,684 Direct | -0.61% | Disposed | 67.4% (price as of 2026-08-21) |
| May 10, 2024 | GKOS | S 10b5-1 | 37 | $111.22 | $4,115 | 51,647 Direct | -0.07% | Disposed | 66.2% (price as of 2026-08-21) |
| May 6, 2024 | GKOS | S 10b5-1 | 90 | $110.26 | $9,923 | 52,000 Direct | -0.17% | Disposed | 67.6% (price as of 2026-08-21) |
| May 2, 2024 | GKOS | S 10b5-1 | 335 | $105.25 | $35,259 | 52,197 Direct | -0.64% | Disposed | 75.6% (price as of 2026-08-21) |
| May 2, 2024 | GKOS | S 10b5-1 | 65 | $106.58 | $6,928 | 52,132 Direct | -0.12% | Disposed | 73.4% (price as of 2026-08-21) |
| May 2, 2024 | GKOS | S 10b5-1 | 42 | $107.77 | $4,526 | 52,090 Direct | -0.08% | Disposed | 71.5% (price as of 2026-08-21) |
| April 8, 2024 | GKOS | S 10b5-1 | 145 | $101.24 | $14,680 | 53,759 Direct | -0.27% | Disposed | 82.5% (price as of 2026-08-21) |
| April 8, 2024 | GKOS | S 10b5-1 | 1,227 | $100.46 | $123,264 | 52,532 Direct | -2.28% | Disposed | 84.0% (price as of 2026-08-21) |
| April 5, 2024 | GKOS | S 10b5-1 | 18 | $95.55 | $1,720 | 54,148 Direct | -0.03% | Disposed | 93.4% (price as of 2026-08-21) |
| April 5, 2024 | GKOS | S 10b5-1 | 217 | $96.62 | $20,967 | 53,931 Direct | -0.40% | Disposed | 91.3% (price as of 2026-08-21) |
| April 5, 2024 | GKOS | S 10b5-1 | 27 | $97.40 | $2,630 | 53,904 Direct | -0.05% | Disposed | 89.7% (price as of 2026-08-21) |
| April 4, 2024 | GKOS | S 10b5-1 | 276 | $95.42 | $26,336 | 54,324 Direct | -0.51% | Disposed | 93.7% (price as of 2026-08-21) |
| April 4, 2024 | GKOS | S 10b5-1 | 158 | $95.16 | $15,035 | 54,166 Direct | -0.29% | Disposed | 94.2% (price as of 2026-08-21) |
| April 3, 2024 | GKOS | S 10b5-1 | 316 | $94.62 | $29,900 | 54,600 Direct | -0.58% | Disposed | 95.3% (price as of 2026-08-21) |
| April 2, 2024 | GKOS | S 10b5-1 | 44 | $88.76 | $3,905 | 55,346 Direct | -0.08% | Disposed | 108.2% (price as of 2026-08-21) |
| April 2, 2024 | GKOS | S 10b5-1 | 170 | $89.71 | $15,251 | 55,176 Direct | -0.31% | Disposed | 106.0% (price as of 2026-08-21) |
| April 2, 2024 | GKOS | S 10b5-1 | 178 | $90.76 | $16,155 | 54,998 Direct | -0.32% | Disposed | 103.6% (price as of 2026-08-21) |
| April 2, 2024 | GKOS | S 10b5-1 | 81 | $91.74 | $7,431 | 54,917 Direct | -0.15% | Disposed | 101.4% (price as of 2026-08-21) |
| April 2, 2024 | GKOS | S 10b5-1 | 1 | $92.74 | $93 | 54,916 Direct | 0.00% | Disposed | 99.3% (price as of 2026-08-21) |
| Feb. 8, 2024 | GKOS | S 10b5-1 | 369 | $95.65 | $35,295 | 54,216 Direct | -0.68% | Disposed | 93.2% (price as of 2026-08-21) |
| Feb. 8, 2024 | GKOS | S 10b5-1 | 181 | $96.06 | $17,387 | 54,035 Direct | -0.33% | Disposed | 92.4% (price as of 2026-08-21) |
| Feb. 7, 2024 | GKOS | S 10b5-1 | 33 | $95.00 | $3,135 | 54,585 Direct | -0.06% | Disposed | 94.5% (price as of 2026-08-21) |
| Jan. 18, 2024 | GKOS | S 10b5-1 | 483 | $90.42 | $43,673 | 54,718 Direct | -0.87% | Disposed | 104.4% (price as of 2026-08-21) |
| Jan. 18, 2024 | GKOS | S 10b5-1 | 100 | $91.11 | $9,111 | 54,618 Direct | -0.18% | Disposed | 102.8% (price as of 2026-08-21) |
| Dec. 21, 2023 | GKOS | S 10b5-1 | 583 | $85.14 | $49,637 | 55,242 Direct | -1.04% | Disposed | 117.1% (price as of 2026-08-21) |
| Dec. 15, 2023 | GKOS | S | 1,270 | $79.80 | $101,346 | 55,825 Direct | -2.22% | Disposed | 131.6% (price as of 2026-08-21) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Aug. 7, 2026 | GKOS | Stock Option (Right to Buy) | Common Stock (20,000) | $33.81 | Dec. 14, 2026 | 20,000 | Disposed |
| July 16, 2026 | GKOS | Stock Option (Right to Buy) | Common Stock (10,000) | $38.68 | Oct. 6, 2026 | 10,000 | Disposed |
| July 9, 2026 | GKOS | Stock Option (Right to Buy) | Common Stock (10,000) | $38.68 | Oct. 6, 2026 | 10,000 | Disposed |
| July 6, 2026 | GKOS | Stock Option (Right to Buy) | Common Stock (10,000) | $38.68 | Oct. 6, 2026 | 10,000 | Disposed |
| Sept. 19, 2024 | GKOS | Stock Option (Right to Buy) | Common Stock (7,320) | $55.18 | March 24, 2032 | 7,320 | Acquired |
| March 14, 2024 | GKOS | Stock Option (Right to Buy) | Common Stock (8,700) | $85.78 | March 14, 2034 | 8,700 | Acquired |
| March 14, 2024 | GKOS | Stock Option (Right to Buy) | Common Stock (1,830) | $55.18 | March 24, 2032 | 1,830 | Acquired |
| March 14, 2024 | GKOS | Stock Option (Right to Buy) | Common Stock (1,830) | $49.51 | April 3, 2033 | 8,906 | Acquired |
| March 14, 2024 | GKOS | Stock Option (Right to Buy) | Common Stock (8,591) | $85.78 | March 14, 2034 | 8,591 | Acquired |
| Dec. 8, 2023 | GKOS | Stock Option (Right to Buy) | Common Stock (1,830) | $55.18 | March 24, 2032 | 1,830 | Acquired |
| Sept. 14, 2023 | GKOS | Stock Option (Right to Buy) | Common Stock (3,659) | $55.18 | March 24, 2033 | 3,659 | Acquired |
| March 22, 2023 | GKOS | Stock Option (Right to Buy) | Common Stock (19,601) | $48.46 | March 22, 2033 | 19,601 | Acquired |
| March 22, 2023 | GKOS | Stock Option (Right to Buy) | Common Stock (6,403) | $55.18 | March 22, 2033 | 6,403 | Acquired |
| Dec. 15, 2022 | GKOS | Stock Option (Right to Buy) | Common Stock (9,148) | $55.18 | March 24, 2032 | 9,148 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 5 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| April 5, 2022 | GKOS | Common Stock | 46,271 | Direct |
| April 5, 2022 | GKOS | Stock Option (Right to Buy)→ Common Stock (40,000) | 40,000 | Direct |
| April 5, 2022 | GKOS | Stock Option (Right to Buy)→ Common Stock (20,000) | 20,000 | Direct |
| April 5, 2022 | GKOS | Stock Option (Right to Buy)→ Common Stock (15,000) | 15,000 | Direct |
| April 5, 2022 | GKOS | Stock Option (Right to Buy)→ Common Stock (6,675) | 6,675 | Direct |