Harbour Biomed Holdings Ltd. licensed exclusive U.S. rights to B7H4 x 4-1BB bispecific immune activator HBM-7008 to Cullinan Oncology Inc. in a deal worth up to $625 million. China-based Harbour will obtain a $25 million up-front payment and is eligible to receive up to $600 million in development, regulatory and sales-based milestones, as well as tiered royalties of up to 20% on U.S. commercial sales.