Additional funding includes $50 million tied to ZOLGENSMA sales milestones (by April 2027) and another $50 million upon mutual agreement. HCRx will receive quarterly interest payments from royalty revenue and warrants to purchase 268,096 shares at $14.92. REGENXBIO retains rights to other funding sources, including a potential Priority Review Voucher for RGX-121 and milestones from AbbVie and Nippon Shinyaku.