NYSE : GKOS
-$1.8 (-1.07%)
2.84%
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0.00
change: -475.0914 | last: 4.7509230.03M
| Filing Date | Reporting Person | Amount Beneficially Owned | % of Class |
|---|---|---|---|
| 2026-05-15 | JANUS HENDERSON GROUP PLC | 5.35M | 9.20% |
| 2026-04-29 | Vanguard Portfolio Management | 3.26M | 5.60% |
| 2026-04-29 | Vanguard Capital Management | 2.95M | 5.07% |
| 2026-03-26 | The Vanguard Group | - | 0.00% |
| 2026-02-17 | JANUS HENDERSON GROUP PLC | 3.02M | 5.30% |
| 2026-02-11 | PRIMECAP MANAGEMENT CO/CA/ | 3.38M | 5.88% |
| 2026-02-10 | Wellington Management Group LLP | 486.82K | 0.80% |
| 2025-08-12 | Wellington Management Group LLP | 3.24M | 5.70% |
| 2025-08-07 | FMR LLC | 2.56M | 4.50% |
| 2025-04-29 | BlackRock, Inc. | 8.16M | 14.40% |
| 2025-02-12 | Thomas W. Burns | 2.55M | 4.40% |
| 2025-02-12 | FMR LLC | 6.08M | 11.00% |
| 2023-12-11 | Abigail P. Johnson | 5M | 10.22% |
| 2023-12-11 | FMR LLC | 5M | 10.22% |
| 2023-01-31 | (1) BlackRock, Inc. | 7.78M | 16.30% |
| 2022-02-10 | The Vanguard Group - 23-1945930 | 5.12M | 10.91% |
| 2022-02-04 | Artisan Partners Limited Partnership | 1.98M | 4.20% |
| 2022-01-28 | (1) BlackRock, Inc. | 7.42M | 15.80% |
| 2022-01-10 | Wellington Group Holdings LLP | 4.92M | 10.50% |
| 2022-01-10 | Wellington Management Company LLP | 4.77M | 10.18% |
| 2022-01-10 | Wellington Investment Advisors Holdings LLP | 4.92M | 10.50% |
| 2022-01-10 | Wellington Management Group LLP | 4.92M | 10.50% |
| 2021-02-10 | Artisan Partners Limited Partnership | 2.37M | 5.30% |
| 2021-02-10 | Artisan Partners Asset Management Inc. | 2.37M | 5.30% |
| 2021-02-10 | Artisan Investments GP LLC | 2.37M | 5.30% |
| 2021-02-10 | Artisan Partners Holdings LP | 2.37M | 5.30% |
| 2020-04-09 | (1) BlackRock, Inc. | 5.84M | 13.40% |
| 2020-02-14 | Thomas W. Burns | 2.63M | 5.82% |
| 2020-02-14 | Alger Group Holdings, LLC | 2.24M | 5.16% |
| 2020-02-14 | Alger Associates, Inc. 13-3017981 | 223.54K | 5.16% |
| 2020-01-22 | Baillie Gifford & Co (Scottish partnership) | 3.58M | 11.00% |
| 2019-02-14 | Lord, Abbett & Co. LLC | 2.11M | 5.85% |
| 2019-02-13 | Abigail P. Johnson | 2.28M | 6.33% |
| 2019-02-13 | FMR LLC | 2.28M | 6.33% |
| 2019-01-10 | Brown Capital Management, LLC | 2.31M | 6.42% |
| 2018-02-14 | 52-0556948 | 2.47M | 7.10% |
| 2018-02-08 | Vanguard Group - 23-1945930 | 2.39M | 6.90% |
| 2018-02-01 | (1) BlackRock, Inc. | 1.96M | 5.70% |
| 2017-09-25 | Partners, L.P. | 1.49M | 4.33% |
| 2017-09-25 | Company, L.P. | 2.53M | 7.34% |
| 2017-09-25 | Deerfield Mgmt, L.P. | 2.53M | 7.34% |
| 2017-09-25 | Fund, L.P. | 1.04M | 3.01% |
| 2017-09-25 | James E. Flynn | 2.53M | 7.34% |
| 2017-02-14 | William Blair Investment Management, LLC | 1.96M | 5.84% |
| 2017-02-14 | Meritech Capital Affiliates III L.P. (“MC AFF III”) | 37565.0 | 0.10% |
| 2017-02-14 | Meritech Capital Partners III L.P. (“MCP III”) | 2.06M | 6.10% |
| 2017-02-14 | Robert D. Ward (“Ward”) | 2.11M | 6.30% |
| 2017-02-14 | Paul S. Madera (“Madera”) | 2.14M | 6.40% |
| 2017-02-14 | Michael B. Gordon (“Gordon”) | 2.13M | 6.30% |
| 2017-02-14 | George H. Bischof (“Bischof”) | 2.1M | 6.30% |
| 2017-02-14 | Meritech Management Associates III L.L.C. (“MMA III”) | 2.1M | 6.30% |
| 2017-02-14 | Meritech Capital Associates III L.L.C. (“MCA III”) | 2.1M | 6.30% |
| 2017-01-31 | Montreux IV Associates, L.L.C. | - | 0.00% |
| 2017-01-31 | Montreux Equity Management IV, LLC | - | 0.00% |
| 2017-01-31 | Montreux Equity Partners IV, L.P. | - | 0.00% |
| 2016-02-22 | Montreux IV Associates, L.L.C. | 161.41K | 0.50% |
| 2016-02-22 | Montreux Equity Partners IV, L.P. | 3.12M | 9.71% |
| 2016-02-22 | Montreux Equity Management IV, LLC | 3.28M | 10.22% |
| 2016-02-16 | Meritech Capital Associates III L.L.C. (“MCA III”) | 3.03M | 9.40% |
| 2016-02-16 | 13G | 2.6M | 8.11% |
| 2016-02-16 | 13G | 2.6M | 8.11% |
| 2016-02-16 | 13G | 2.6M | 8.11% |
| 2016-02-16 | Meritech Capital Partners III L.P. (“MCP III”) | 2.97M | 9.20% |
| 2016-02-16 | Meritech Management Associates III L.L.C. (“MMA III”) | 3.03M | 9.40% |
| 2016-02-16 | Michael B. Gordon (“Gordon”) | 3.03M | 9.40% |
| 2016-02-16 | George H. Bischof (“Bischof”) | 3.03M | 9.40% |
| 2016-02-16 | 13G | 2.6M | 8.11% |
| 2016-02-16 | Meritech Capital Affiliates III L.P. (“MC AFF III”) | 54176.0 | 0.20% |
| 2016-02-16 | Robert D. Ward (“Ward”) | 3.03M | 9.40% |
| 2016-02-16 | Paul S. Madera (“Madera”) | 3.03M | 9.40% |
| 2016-02-16 | Thomas W. Burns | 2.85M | 8.40% |
| 2016-02-16 | 13G | 2.6M | 8.11% |
| 2016-02-16 | 13G | 2.6M | 8.11% |
| 2016-02-16 | 13G | 2.6M | 8.11% |
| 2016-02-16 | 13G | 2.6M | 8.11% |
| 2016-02-12 | OrbiMed Capital GP III LLC | 2.87M | 8.94% |
| 2016-02-12 | Page 7 of 14 Pages | 2.61M | 8.10% |
| 2016-02-12 | Page 2 of 14 Pages | 2.6M | 8.10% |
| 2016-02-12 | Samuel D. Isaly | 2.9M | 9.03% |
| 2016-02-12 | Page 6 of 14 Pages | 2.6M | 8.10% |
| 2016-02-12 | Page 10 of 14 Pages | 2.6M | 8.10% |
| 2016-02-12 | OrbiMed Advisors LLC | 2.9M | 9.03% |
| 2016-02-12 | Page 4 of 14 Pages | 2.6M | 8.10% |
| 2016-02-12 | Page 5 of 14 Pages | 2.6M | 8.10% |
| 2016-02-12 | Page 9 of 14 Pages | 2.6M | 8.10% |
| 2016-02-12 | Page 3 of 14 Pages | 2.6M | 8.10% |
| 2016-02-12 | Page 8 of 14 Pages | 2.6M | 8.10% |
| 2016-02-10 | Versant Ventures I, LLC | 3.14M | 9.80% |
| 2016-02-10 | DONALD B. MILDER | 3.14M | 9.80% |
| 2016-02-10 | ROSS A. JAFFE, M.D. | 3.14M | 9.80% |
| 2016-02-10 | SAMUEL D. COLELLA | 3.14M | 9.80% |
| 2016-02-10 | WILLIAM J. LINK | 3.14M | 9.80% |
| 2016-02-10 | Versant Affiliates Fund I-B, L.P. | 132.48K | 0.40% |
| 2016-02-10 | Versant Side Fund I, L.P. | 56696.0 | 0.20% |
| 2016-02-10 | Versant Affiliates Fund I-A, L.P. | 62217.0 | 0.20% |
| 2016-02-10 | BRIAN G. ATWOOD | 3.14M | 9.80% |
| 2016-02-10 | Versant Venture Capital I, L.P. | 2.88M | 9.00% |
| 2016-02-10 | BARBARA N. LUBASH | 3.14M | 9.80% |
| 2016-02-10 | REBECCA B. ROBERTSON | 3.14M | 9.80% |
| 2016-01-19 | DP IV Associates, L.P. | 14041.0 | 0.10% |
| 2016-01-19 | Domain Partners VIII, L.P. | 876.08K | 2.70% |
| 2016-01-19 | Domain Associates, LLC | 63200.0 | 0.20% |
| 2016-01-19 | DP VIII Associates, L.P. | 6501.0 | 0.10% |
| 2016-01-19 | Domain Partners IV, L.P. | 2.07M | 6.40% |
| Date | Stock Price | Shares Outstanding | Market Cap | Cash & Equivalents | Total Debt | Enterprise Value |
|---|---|---|---|---|---|---|
| 2025-12-31 | $112.91 | 57.19M | $6.46B | $90.81M | $139.64M | $6.51B |
| 2024-12-31 | $149.94 | 52.76M | $7.91B | $169.63M | $103.4M | $7.84B |
| 2023-12-31 | $79.49 | 48.43M | $3.85B | $93.47M | $383.74M | $4.14B |
| 2022-12-31 | $43.68 | 47.44M | $2.07B | $119.52M | $382.91M | $2.34B |
| 2021-12-31 | $44.44 | 46.42M | $2.06B | $100.71M | $383.38M | $2.35B |
| 2020-12-31 | $75.26 | 44.5M | $3.35B | $96.6M | $272M | $3.52B |
| 2019-12-31 | $54.47 | 37.36M | $2.03B | $62.43M | $72.63M | $2.04B |
| 2018-12-31 | $56.17 | 35M | $1.97B | $29.82M | -$ | $1.94B |
| 2017-12-31 | $25.65 | 34.38M | $881.87M | $24.51M | -$ | $857.36M |
| 2016-12-31 | $34.30 | 32.93M | $1.13B | $6.49M | -$ | $1.12B |
| Date | Stock Price | Shares Outstanding | Market Cap | Cash & Equivalents | Total Debt | Enterprise Value |
|---|---|---|---|---|---|---|
| 2026-06-30 | $139.76 | 58.42M | $8.16B | $114.48M | $102.84M | $8.15B |
| 2026-03-31 | $107.66 | 58.02M | $6.25B | $104.25M | $103.06M | $6.25B |
| 2025-12-31 | $112.91 | 57.51M | $6.49B | $90.81M | $139.64M | $6.54B |
| 2025-09-30 | $81.55 | 57.4M | $4.68B | $98.25M | $104.32M | $4.69B |
| 2025-06-30 | $103.29 | 57.2M | $5.91B | $100.81M | $105.02M | $5.91B |
| 2025-03-31 | $98.42 | 56.64M | $5.57B | $114.25M | $105.48M | $5.57B |
| 2024-12-31 | $149.94 | 55.58M | $8.33B | $169.63M | $103.4M | $8.27B |
| 2024-09-30 | $130.28 | 55.04M | $7.17B | $100.14M | $157.13M | $7.23B |
| 2024-06-30 | $117.42 | 50.72M | $5.95B | $68.08M | $156.61M | $6.04B |
| 2024-03-31 | $93.10 | 49.58M | $4.62B | $42.5M | $383.52M | $4.96B |
| 2023-12-31 | $79.49 | 48.88M | $3.89B | $93.47M | $385.05M | $4.18B |
| 2023-09-30 | $75.25 | 48.68M | $3.66B | $108.93M | $383.79M | $3.94B |