David Kirske plan to sell securities of X4 Pharmaceuticals, Inc. under Form 144

David Kirske filed Form 144 to notify SEC of plan to sell 16961 units of X4 Pharmaceuticals, Inc. securities around 2026-05-12, with aggregate market value of $72,820.41. The total outstanding units is 94319696.0. The amount planned to be sold represents 0.02% of total outstanding units;