MeiraGTx Holdings plc
MGTX- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001735438
In the last 90 days, MeiraGTx Holdings plc insiders filed 0 open-market purchases and 3 sales; 158 institutions reported holding it in 13F filings for Q2 2026, worth $1.07B in total; no superinvestor holds it.
Holders of 5% or more of MGTX
Holders whose latest Schedule 13D or 13G filing reports 5% or more of MeiraGTx Holdings plc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Prosight Management, LP | 13G/A | 5.40%4.36M shares | – | May 14, 20251 filing | May 14, 2025 | SEC |
| Adage Capital Management, L.P. | 13G/A | 5.20%4.18M shares | – | Nov 13, 20251 filing | Nov 13, 2025 | SEC |
| Adena Estate Inc. | 13G | 5.10%3.27M shares | New | Feb 9, 20241 filing | Feb 9, 2024 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
3 Schedule 13D and 13G filings on MeiraGTx Holdings plc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Nov 13, 20259:05 AM ET | Adage Capital Management, L.P.and 2 others | 13G/A | 5.20%4.18M shares | – | Sep 30, 2025 | SEC |
| May 14, 20258:30 AM ET | Prosight Management, LPand 4 others | 13G/A | 5.40%4.36M shares | – | Mar 31, 2025 | SEC |
| Feb 9, 202410:10 AM ET | Adena Estate Inc. | 13G | 5.10%3.27M shares | New | Dec 31, 2023 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell MeiraGTx Holdings plc shares.
No Form 144 notices for MeiraGTx Holdings plc are on file.