STOCK TITAN

Lilly completes acquisition of Centessa Pharmaceuticals to advance treatments for sleep-wake disorders

(Moderate)
(Neutral)

Eli Lilly (NYSE: LLY) has completed its acquisition of Centessa Pharmaceuticals, a clinical-stage company focused on orexin receptor 2 agonists for narcolepsy and other sleep-wake disorders. Lilly plans to advance Centessa's clinical portfolio to address unmet needs in conditions driven by disrupted sleep and wakefulness.

Loading...
Loading translation...

Positive

  • Acquisition adds clinical-stage orexin receptor 2 agonist portfolio to Lilly
  • Expands Lilly's pipeline in narcolepsy and other sleep-wake disorders
  • Completed transaction enables Lilly to control and prioritize development efforts

Negative

  • None.

News Market Reaction – LLY

+0.92%
+0.92% Session close to close

In the Jun 24 session, LLY gained 0.92%, reflecting a mild positive market reaction.

Data tracked by StockTitan Argus on the day of publication.

Market Context

This announcement confirms closing of Lilly’s Centessa acquisition, cementing its move into orexin-b...
Analysis

This announcement confirms closing of Lilly’s Centessa acquisition, cementing its move into orexin-based treatments for sleep-wake disorders. It extends a broader acquisition streak; key risks remain clinical data readouts and integration of Centessa’s programs.

Previous Acquisition Reports

5 past events · Latest: May 26 ()
Same Type 5 events
Date Event Sentiment 24h Move Catalyst
May 26 Infectious disease deals -0.0% Multiple vaccine-focused acquisitions to expand infectious disease prevention portfolio.
Apr 27 Hematology acquisition -1.8% Ajax buyout adding a Phase 1 Type II JAK2 inhibitor for myelofibrosis.
Apr 20 Gene therapy acquisition -0.8% Kelonia deal to broaden in vivo CAR-T and genetic medicine capabilities.
Mar 31 Centessa agreement +3.7% Initial Centessa acquisition announcement expanding sleep medicine and OX2R agonist pipeline.
Feb 09 Cell therapy acquisition -1.3% Orna acquisition to add in vivo CAR-T platform for autoimmune diseases.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Key Terms

orexin receptor 2 agonists, orexin system, narcolepsy, sleep-wake disorders
4 terms
orexin receptor 2 agonists medical
"Centessa is a clinical-stage company developing orexin receptor 2 agonists as a new class"
Drugs that activate the brain’s orexin receptor 2, which helps regulate wakefulness and sleep. Think of the receptor as a door and these drugs as keys that keep the door open to promote alertness; they are being developed for disorders like narcolepsy and certain forms of insomnia. Investors care because clinical trial results, regulatory approvals, safety data and patent protection determine commercial potential and stock-moving milestones.
orexin system medical
"The orexin system plays a fundamental role in human brain health, governing wakefulness"
A network of brain cells that communicate using orexin chemicals to regulate sleep, wakefulness, appetite and reward—think of it as a control system that helps switch the brain between ‘awake’ and ‘rest’ modes. It matters to investors because drugs that block or boost this system can treat sleep disorders, obesity or addiction; clinical success, approvals or safety issues can quickly alter a drug maker’s revenue prospects and stock value.
narcolepsy medical
"For people living with narcolepsy, that disruption is severe and life-altering."
A chronic neurological condition that causes sudden, uncontrollable episodes of deep sleep and extreme daytime drowsiness, like a phone that unexpectedly shuts off during the day. It matters to investors because it defines the market need for treatments, influences clinical trial results and regulatory decisions, and can drive revenue or risk for companies developing medications, devices, or diagnostics tied to sleep disorders.
sleep-wake disorders medical
"medicines for the treatment of narcolepsy and potentially other sleep-wake disorders."
Sleep-wake disorders are medical conditions in which a person’s normal pattern of sleeping and being awake is disrupted, causing excessive sleepiness, difficulty falling or staying asleep, or irregular sleep timing. For investors, they matter because they define the size and urgency of markets for drugs, devices and services—think of it like a city’s traffic signal system gone awry: fixing it can restore daily function for many people and create clear opportunities for regulatory approvals, treatment adoption and reimbursement planning.

AI-generated analysis. How Rhea-AI works. Not financial advice.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google
Add on Google

INDIANAPOLIS, June 24, 2026 /PRNewswire/ -- Eli Lilly and Company (NYSE: LLY) today announced the successful completion of its acquisition of Centessa Pharmaceuticals plc. Centessa is a clinical-stage company developing orexin receptor 2 agonists as a new class of medicines for the treatment of narcolepsy and potentially other sleep-wake disorders.

"The orexin system plays a fundamental role in human brain health, governing wakefulness, alertness, and the stability of sleep in ways that, when disrupted, can be profoundly disabling," said Carole Ho, Lilly executive vice president and president, Lilly Neuroscience. "For people living with narcolepsy, that disruption is severe and life-altering. Orexin's reach extends further to diseases impacted by disrupted sleep, and so does the unmet need. Centessa has built a clinical portfolio with the depth to explore both, and Lilly intends to pursue that potential with urgency."

About Lilly
Lilly is a medicine company turning science into healing to make life better for people around the world. We've been pioneering life-changing discoveries for 150 years, and today our medicines help tens of millions of people across the globe. Harnessing the power of biotechnology, chemistry and genetic medicine, our scientists are urgently advancing new discoveries to solve some of the world's most significant health challenges: redefining diabetes care; treating obesity and curtailing its most devastating long-term effects; advancing the fight against Alzheimer's disease; providing solutions to some of the most debilitating immune system disorders; and transforming the most difficult-to-treat cancers into manageable diseases. With each step toward a healthier world, we're motivated by one thing: making life better for millions more people. That includes delivering innovative clinical trials that reflect the diversity of our world and working to ensure our medicines are accessible and affordable. To learn more, visit Lilly.com and Lilly.com/news, or follow us on Facebook, Instagram, and LinkedIn. F-LLY

Trademarks and Trade Names 
All trademarks or trade names referred to in this press release are the property of Lilly, or, to the extent trademarks or trade names belonging to other companies are referenced in this press release, the property of their respective owners. Solely for convenience, the trademarks and trade names in this press release are referred to without the ® and ™ symbols, but such references should not be construed as any indicator that the company or, to the extent applicable, their respective owners will not assert, to the fullest extent under applicable law, the company's or their rights thereto. We do not intend the use or display of other companies' trademarks and trade names to imply a relationship with, or endorsement or sponsorship of us by, any other companies.

Cautionary Statement Regarding Forward-Looking Statements
This press release contains forward-looking statements (as that term is defined in the Private Securities Litigation Reform Act of 1995) about the benefits of Lilly's acquisition of Centessa Pharmaceuticals, Lilly's neuroscience platform and development plans, Centessa's clinical-stage pipeline of programs targeting sleep disorders, including its lead program targeting orexin dysfunction, and reflects Lilly's current beliefs and expectations. However, as with any such undertaking, there are substantial risks and uncertainties in implementing the acquisition and in the process of drug research, development, and commercialization. Among other things, there can be no guarantee that Lilly will realize the expected benefits of the acquisition, that the acquisition will achieve the results discussed in this press release or that the acquisition will yield commercially successful products. For further discussion of these and other risks and uncertainties that could cause actual results to differ from Lilly's expectations, see Lilly's Form 10-K and Form 10-Q filings with the United States Securities and Exchange Commission. Except as required by law, Lilly undertakes no duty to update forward-looking statements to reflect events after the date of this press release.

Refer to:

Jessica Bardoulas; jessica.bardoulas@lilly.com (Media)


Michael Czapar; czapar_michael_c@lilly.com (Investors)

 

Eli Lilly and Company logo. (PRNewsFoto, Eli Lilly and Company)

 


Cision View original content to download multimedia:https://www.prnewswire.com/news-releases/lilly-completes-acquisition-of-centessa-pharmaceuticals-to-advance-treatments-for-sleep-wake-disorders-302808668.html

SOURCE Eli Lilly and Company

FAQ

What did Eli Lilly (NYSE: LLY) announce about Centessa Pharmaceuticals on June 24, 2026?

Eli Lilly announced it completed the acquisition of Centessa Pharmaceuticals. According to Lilly, Centessa adds a clinical portfolio of orexin receptor 2 agonists targeting narcolepsy and potentially other sleep-wake disorders.

How does the Centessa acquisition support Eli Lilly's narcolepsy strategy (LLY)?

The acquisition gives Lilly access to Centessa's orexin receptor 2 agonist programs for narcolepsy. According to Lilly, these investigational medicines aim to address severe, life-altering disruption of wakefulness and sleep stability.

What are orexin receptor 2 agonists in Eli Lilly's new Centessa portfolio?

Orexin receptor 2 agonists are investigational medicines targeting the orexin system that regulates wakefulness and sleep. According to Lilly, Centessa's candidates represent a new class of treatments for narcolepsy and other sleep-wake disorders.

Why is Eli Lilly interested in sleep-wake disorder treatments after acquiring Centessa (LLY)?

Lilly sees significant unmet need in diseases linked to disrupted sleep and wakefulness. According to Lilly, Centessa's portfolio provides depth to explore narcolepsy and additional sleep-wake disorders influenced by orexin pathway dysfunction.

What does the Centessa deal mean for Eli Lilly Neuroscience investors (LLY)?

The deal broadens Lilly Neuroscience's pipeline with clinical-stage sleep-wake programs. According to Lilly, it intends to pursue the potential of Centessa's orexin receptor 2 agonists with urgency to address disabling narcolepsy symptoms.