X4 Pharmaceuticals Inc. has announced the pricing of an underwritten public offering, raising approximately $135 million through the issuance of 45,860,000 shares of common stock at $2.90 per share and pre-funded warrants to purchase up to 700,000 shares at $2.899 per warrant. The pre-funded warrants are exercisable immediately at an exercise price of $0.001 per share. The company has also granted underwriters a 30-day option to purchase up to an additional 6,984,000 shares. X4 intends to use the proceeds to fund the Phase 3 development of mavorixafor for chronic neutropenic disorders, as well as for general corporate purposes. Leerink Partners, Stifel, and Guggenheim Securities are acting as joint bookrunning managers for the offering.