Xencor settles Ultomiris U.S. royalty dispute with Alexion for USD 105 million - XNCR News | RalliesXencor settles Ultomiris U.S. royalty dispute with Alexion for USD 105 million
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XNCR• Settlement resolves U.S. Ultomiris royalty dispute
- Xencor settled a dispute with Alexion over U.S. royalties on Ultomiris, securing USD 105 million in two equal payments.
- First USD 52.5 million payment expected in August 2026; second USD 52.5 million due one year after the settlement is executed.
- Alexion will owe no further royalties on U.S. Ultomiris sales; ex-U.S. royalties continue under existing license terms.
- Dispute followed Alexion’s March 2026 position that no additional U.S. royalties were owed, ending future U.S. payments.
- Xencor reinstated its operating runway outlook through 2028 following the settlement.
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