Zenas BioPharma and Royalty Pharma Enter into Obexelimab Funding Agreement for up to $300 Million | Tue, 09/02/2025 - 07:05

Funding Rounds

Summary

Zenas BioPharma and Royalty Pharma announced a funding agreement worth up to $300 million tied to obexelimab. Royalty Pharma will pay $75 million upfront, with additional payments linked to Phase 3 trial success and FDA approvals. Zenas plans to use the capital to advance obexelimab in IgG4-Related Disease and other autoimmune indications and to support a potential U.S. launch. The deal gives Zenas more runway through early 2027 and exchanges future sales royalties for development funding.

$ Funding

$
Amount $300.0M Total raised
Date September 2, 2025 Announcement date
Investors Royalty Pharma Lead investors
Company zenasbio.com Funded company

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