MeiraGTx Holdings PLC (MGTX)
Who owns MeiraGTx Holdings PLC (MGTX)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 56.4% of the shares are freely tradable; institutional investors hold 60.9%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Sanofi | 13.17 | 12,197,737 | +0.0 | 03/31/2026 |
| Perceptive Advisors LLC | 11.15 | 10,326,103 | +0.0 | 03/31/2026 |
| Rubric Capital Management LP | 7.56 | 7,000,000 | +13.4 | 03/31/2026 |
| Johnson & Johnson | 7.17 | 6,641,064 | +0.0 | 03/31/2026 |
| Adage Capital Partners Gp LLC | 4.32 | 4,000,000 | +0.0 | 03/31/2026 |
| Millennium Management LLC | 3.74 | 3,465,699 | +9.1 | 03/31/2026 |
| BlackRock Inc | 3.42 | 3,168,148 | +3.2 | 03/31/2026 |
| Prosight Management, LP | 2.84 | 2,629,971 | -18.1 | 03/31/2026 |
| 683 Capital Management LLC | 2.65 | 2,450,000 | -4.3 | 03/31/2026 |
| Opaleye Management Inc | 2.29 | 2,123,259 | +443.2 | 03/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 21. Jul 2026 | Giroux Richard | CFO & COO | Sell | 56,000 | 12.51 | 700,560 |
| 21. Apr 2026 | Richard Giroux | CFO | Sell | 56,000 | 10.22 | 572,320 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.