0001582313 2026-08-06 2026-08-06 false 0001582313 8-K 2026-08-06 XENON PHARMACEUTICALS INC. Z4 001-36687 98-0661854 3650 Gilmore Way Burnaby BC CA V5G 4W8 (604) 484-3300 Not Applicable false false false false Common Shares, without par value XENE NASDAQ false