Xencor settles Ultomiris U.S. royalty dispute with Alexion for $105M

Xencor Inc

Xencor to receive $105M in two equal payments: $52.5M in Aug 2026 and $52.5M in July 2027.
Alexion has no further obligation to pay U.S. royalties on Ultomiris; ex-U.S. royalties unchanged.
Cash runway extended through 2028 based on current operating plans.
Dispute began in March 2026 when Alexion claimed no further U.S. royalties were owed.
CEO Bassil Dahiyat says resolution provides immediate capital and reflects expected U.S. royalty value.

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