March 31, 2026

Eli Lilly announces $7-billion merger, with eye on wakefulness drugs

Eli Lilly announced plans for a $7-billion merger with Centessa, a biotech company specializing in wakefulness drugs aimed at treating Narcolepsy. - Lauren Chapman / Indiana Public Broadcasting

Eli Lilly announced plans for a $7-billion merger with Centessa, a biotech company specializing in wakefulness drugs aimed at treating Narcolepsy.

Lauren Chapman / Indiana Public Broadcasting

Eli Lilly announced Tuesday that it will acquire drug company Centessa for more than $7-billion. 

The company specializes in drugs to treat daytime sleepiness and other neurological disorders. 

Centessa is in the clinical stages of producing a new class of medicines to treat “impaired wakefulness” or narcolepsy.

A small portion of Americans suffer from narcolepsy, but the research could eventually be used to address sleepiness as a side effect of diseases like Alzheimer’s, which is a focus for Eli Lilly. 

The biotech company Centessa has headquarters in Boston and London and does not yet have drugs on the market. 

The deal nets Centessa $6.3 billion up front. If the U.S. ultimately approves Centessa’s drugs, Lilly will pay an additional $1.5 billion to the company. 

Centessa shareholders still have to approve the merger. That move is not expected until later in the year. 

A spokesperson with Eli Lilly declined to comment on this story. 

Contact Government Reporter Benjamin Thorp at bthorp@wfyi.org

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