X0708 D LIVE 0002068848 X1 Biotech Inc. 935 GREAT PLAIN AVENUE #140 NEEDHAM MA MASSACHUSETTS 02492 617-834-4833 DELAWARE None None Corporation true Leo Kim 935 Great Plain Avenue Needham MA MASSACHUSETTS 02492 Director Dean Eliott 935 Great Plain Avenue Needham MA MASSACHUSETTS 02492 Director Joseph Arboleda-Velasquez 935 Great Plain Avenue Needham MA MASSACHUSETTS 02492 Director Neal Chen 935 Great Plain Avenue Needham MA MASSACHUSETTS 02492 Director Lawrence Kaufman 935 Great Plain Avenue Needham MA MASSACHUSETTS 02492 Executive Officer Michael Aceti 935 Great Plain Avenue Needham MA MASSACHUSETTS 02492 Executive Officer Other Technology Decline to Disclose 06b false 2026-05-20 false true true false 0 2000000 40000 1960000 false 2 0 0 0 false X1 Biotech Inc. /s/ Lawrence Kaufman Lawrence Kaufman President and CEO 2026-06-12