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Tarsus to expand eye disease pipeline with up to $800 million Alkeus acquisition

By Thomson Reuters Aug 6, 2026 | 6:58 AM

By Puyaan Singh

Aug 6 (Reuters) – Eye drugmaker Tarsus Pharmaceuticals said on Thursday it would acquire privately held Alkeus Pharmaceuticals in a cash-and-stock deal worth up ​to $800 million, adding an experimental oral therapy for ‌a rare inherited retinal disorder with no approved U.S. treatment to its pipeline.

The deal includes an upfront payment of about $450 million, comprising $270 million in cash and $180 million in Tarsus common stock, the companies said.

• ‌Alkeus ​stockholders could receive up to $350 million ⁠more tied to regulatory ⁠approval and first commercial sale milestones, as well as low-single-digit percentage royalties on net sales of the drug, gildeuretinol.

• Tarsus shares were up 2% in early trading.

• ​Gildeuretinol, also known as ALK-001, could slow retinal damage and help preserve vision in patients with Stargardt disease, said ⁠Tarsus.

• Stargardt disease often begins ⁠in childhood or adolescence and progressively damages ​central vision, affecting patients’ ability to read, recognize faces and drive.

• ​More than 36,000 people in the United States ‌have been clinically diagnosed with the disease, Tarsus said.

• “We did some market research… showing structural benefit, functional benefit… a really nice safety profile. And we surveyed about 100 retinal ⁠docs… we really think this is a billion-dollar-plus opportunity,” said Chief Financial and Strategy Officer Jeff Farrow.

• “The price range we would ⁠consider… (is) around that $350,000 ‌price point,” said interim commercial chief Neera ⁠Clase.

• Initial data from Gildeuretinol’s ongoing late-stage ​trial ‌is expected in the second half of ​2029.

• The transaction ⁠is expected to close in 2026, subject to regulatory clearance and customary conditions.

• Separately, the company reported $173.9 million in second-quarter sales, beating Wall Street estimates of $169.7 million, according to data compiled by LSEG.

(Reporting by Puyaan Singh in Bengaluru; Editing ​by Jonathan Ananda)