MGTX · NASDAQ · Biotechnology

MeiraGTx

Develops locally delivered AAV gene therapies and manufactures its own viral vectors.

$13.82
After-hours close0.00 (0.00%)
At close$13.82(−2.26%)

Breakdown13F · Form 4

Institutions 86.48%Insiders 15.19%

Institutions and insiders are filed separately and overlap, so together they can pass the whole company. No split is drawn from them.

Shares outstanding 92.61M · Float 70.14M · 75.7% free float

Top shareholders13F · 13D/G · Form 4

HolderShares% outstandingFormFiled
Sanofi12.20M13.17%13FJul 28, 2026
Perceptive Advisors LLC10.79M11.65%13FAug 14, 2026
Rubric Capital Management LP9.10M9.83%13FAug 14, 2026
Johnson & Johnson6.64M7.17%13FAug 6, 2026
BlackRock, Inc.4.76M5.14%13FAug 7, 2026

Institutions13F, as of Jun 30, 2026

160 holders · 80.09M shares · 39 new positions · 119 increased · 23 reduced · 15 closed

HolderShares% outstandingChg q/qFiled
Sanofi12.20M13.17%0Jul 28, 2026
Perceptive Advisors LLC10.79M11.65%+460.6KAug 14, 2026
Rubric Capital Management LP9.10M9.83%+2.10MAug 14, 2026
Johnson & Johnson6.64M7.17%0Aug 6, 2026
BlackRock, Inc.4.76M5.14%+1.59MAug 7, 2026
Adage Capital Partners GP, L.L.C.4.40M4.75%+400.0KAug 14, 2026
Opaleye Management Inc.3.55M3.83%+1.43MAug 14, 2026
Millennium Management LLC2.97M3.21%−493.9KAug 14, 2026

Beneficial owners13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Perceptive Advisors LLCincl. Joseph Edelman, Perceptive Life Sciences Master Fund, Ltd.12.60%11.74M13DApr 24, 2026
Rubric Capital Management LP7.90%6.18M13GFeb 13, 2026

InsidersForm 4

InsiderRoleShares% outstandingFiled
Perceptive Advisors LLCdirector, 10 percent owner: 10.79M11.65%Apr 23, 2026
Alexandria Forbesdirector, officer: PRESIDENT & CEO1.33M1.43%Aug 18, 2026
Richard Girouxofficer: CFO & COO908.5K0.98%Jul 21, 2026
Stuart Naylorofficer: CHIEF SCI OFCR, OPHTHALMOLOGY640.8K0.69%Jul 7, 2026
Keith R. Harrisdirector200.0K0.22%Jun 10, 2026
Robert K. Zeldinofficer: CHIEF MEDICAL OFFICER146.2K0.16%Apr 28, 2026
Robert J. Wollinofficer: GENERAL COUNSEL AND SECRETARY57.4K0.06%Feb 23, 2026

2 ten-percent owners hold 17.51M shares by Form 4 — the 13D/G table above shows those stakes, the figure above counts officers and directors only · 7 people have not refiled in the last 18 months (6.91M shares), so they are not in the figure above

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Aug 18, 2026
Alexandria Forbesdirector, officer: PRESIDENT & CEO
Sale62,000$13.861,325,695
Jul 21, 2026
Richard Girouxofficer: CFO & COO
Sale56,000$12.51908,530
Jul 7, 2026
Stuart Naylorofficer: CHIEF SCI OFCR, OPHTHALMOLOGY
Sale · 2 lots27,659$14.80640,846
May 19, 2026
Alexandria Forbesdirector, officer: PRESIDENT & CEO
Sale62,000$9.171,387,695
Apr 21, 2026
Richard Girouxofficer: CFO & COO
Sale56,000$10.22971,530
Apr 7, 2026
Stuart Naylorofficer: CHIEF DEV. OFFICER
Sale27,661$9.36668,505
Mar 24, 2026
Alexandria Forbesdirector, officer: PRESIDENT & CEO
Sale62,000$7.411,449,695
Oct 21, 2025
Richard Girouxofficer: CFO & COO
Sale24,000$8.87829,494
Oct 7, 2025
Alexandria Forbesdirector, officer: PRESIDENT & CEO
Sale47,500$8.391,313,983

CongressHouse and Senate disclosures

Not reported.