X0206 3 2018-06-08 0 0001735438 MeiraGTx Holdings plc MGTX 0001216955 MARCUS JOEL S 430 E. 29TH STREET, 10TH FLOOR NEW YORK NY 10016 1 0 0 0 Ordinary Shares 1649393 I See footnote Ordinary Shares 79922 I By Third Amended and Restated Joel and Barbara Marcus Family Trust Stock Option 7.72 2026-03-04 Ordinary Shares 12883 D Stock Option 5.63 2028-01-10 Ordinary Shares 15459 D Represents securities held of record by Alexandria Equities No. 7 ("Alexandria"). ARE-QRS Corp. is the general partner of Alexandria Real Estate Equities L.P., which is the managing member of ARE-Special Services, LLC, which is the managing member of Alexandria. ARE-QRS Corp. has full voting and investment power with respect to the shares owned by Alexandria. The reporting person is the Executive Chairman of ARE-QRS Corp. and may therefore be deemed to have voting and investment power with respect to the shares owned by Alexandria. Each of the reporting person, ARE-QRS Corp., Alexandria Real Estate Equities L.P., and ARE-Special Services, LLC disclaims beneficial ownership of such shares except to the extent of any pecuniary interest therein. The option fully vested with respect to half of the total grant on March 4, 2016 and as to the remainder of the grant on March 4, 2017. The option will vest and become exercisable on January 10, 2019. Exhibit 24 - Power of Attorney. /s/ Richard Giroux, Attorney-in-Fact for Joel S. Marcus 2018-06-08