X0609 4 2026-04-28 0001730430 Kiniksa Pharmaceuticals International, plc KNSA 0001384243 Quart Barry D true C/O KINIKSA PHARMACEUTICALS INT'L 105 PICCADILLY, SECOND FLOOR LONDON X0 W1J 7NJ UNITED KINGDOM true false false false 1 Class A Ordinary Share 2026-04-28 4 M 0 13099 14.33 A 25645 D Class A Ordinary Share 2026-04-28 4 S 0 13099 50.10 D 12546 D Share Option 14.33 2026-04-28 4 M 0 13099 0 D 2031-06-28 Class A Ordinary Shares 13099 13237 D This transaction was effected pursuant to a 10b5-1 plan executed by the reporting person on September 11, 2025. This transaction was executed in multiple trades through a broker-dealer at prices ranging between $50.00 and $50.725. The price reported in this column reflects a weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price. The option is fully vested and exercisable. /s/ Douglas Barry, Attorney-in-Fact 2026-04-29