Here's a classic biotech story: a company develops a technology, licenses it out, and then waits for the royalty checks to roll in. For Xencor Inc. (XNCR), the checks for one of its licensed products just stopped coming from one very important market.
On Wednesday, Xencor said it is revising its revenue outlook for royalties tied to Ultomiris. The company announced that its licensee, Alexion Pharmaceuticals, has stated it does not owe additional royalties for Ultomiris (ravulizumab-cwvz) sales in the United States.
For those keeping score, Alexion is now part of AstraZeneca Plc (AZN), which completed its acquisition of the company in July 2021 for approximately $39 billion. So, this isn't a dispute with a small player.
Company Seeks Resolution
"Xencor has reasonably assumed that the multiple licensees of our XmAb Fc domains and technologies remit payments in accordance with the terms of their respective agreements," said Bassil Dahiyat, Ph.D., president and chief executive officer of Xencor. "One licensee has expressed disagreement regarding payments for net sales of Ultomiris in the United States, and we plan to work toward a resolution in this matter. Importantly, we have not observed a change in payments related to ex-U.S. sales."
In other words: We thought everyone was paying up correctly. One big partner now says it doesn't owe us for U.S. sales, but we're going to try to sort this out. And, for now, the money from sales everywhere else is still coming in.
Prior Royalty Expectations
This isn't just a minor accounting quibble. Xencor previously said that following the issuance of a specific U.S. patent, it expected to receive an estimated $100 million to $120 million in aggregate through 2028 in low single-digit royalties on U.S. net sales of Ultomiris. That's a significant chunk of future revenue that is now in question.











