X0609 4 2026-10-20 0001735438 MeiraGTx Holdings plc MGTX 0001742734 Giroux Richard false 655 THIRD AVENUE SUITE 1115 NEW YORK NY 10017 false true false false CFO & COO 1 Ordinary Shares 2026-10-20 4 S 0 56000 9.95 D 852530 D Ordinary Shares 5152 I By Spouse Ordinary Shares 85000 I By Aigle Healthcare Partners III LLC The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 18, 2025. The price reported reflects the weighted average sales price. The shares were sold in multiple transactions at prices ranging from $9.5188 to $10.12, inclusive. The reporting person undertakes to provide to the SEC staff, the issuer, or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price. /s/ Richard Giroux 2026-10-20