Merck Buying Acceleron Pharma in $11.5B Deal

Acceleron is running late-stage studies of a potential treatment for patients with pulmonary arterial hypertension.

This May 1, 2018, file photo shows Merck corporate headquarters in Kenilworth, N.J. Merck is buying Acceleron Pharma in a deal worth about $11.5 billion. Merck said Thursday, Sept. 30, 2021, that it will pay $180 per share in cash for each Acceleron share.
This May 1, 2018, file photo shows Merck corporate headquarters in Kenilworth, N.J. Merck is buying Acceleron Pharma in a deal worth about $11.5 billion. Merck said Thursday, Sept. 30, 2021, that it will pay $180 per share in cash for each Acceleron share.
AP Photo/Seth Wenig, File

KENILWORTH, New Jersey (AP) โ€” Merck will spend about $11.5 billion to buy Acceleron Pharma and its potential treatment for high blood pressure in vessels that connect the lungs heart.

Merck will pay $180 per share in cash for Acceleron, the Kenilworth, New Jersey, company said Thursday.

Acceleron is running late-stage studies of a potential treatment for patients with pulmonary arterial hypertension, a potentially life-threatening blood vessel disorder.

The drug represents a โ€œpotential blockbusterโ€ and a way for for Merck to add a new source of revenue, Mizuho Securities USA analyst Mara Goldstein wrote.

Merck has long faced investor criticism that itโ€™s far too dependent for revenue from its drug Keytruda, which is now approved for treating a dozen types of cancer.

Keytruda brought in $4.2 billion for Merck in the second quarter, more than one-third of the company's total revenue.

Merck also is developing a potential COVID-19 treatment, and the company expects to have results from late-stage research into that drug by later this year.

Acceleron also makes Reblozyl, a treatment for anemia in some rare blood disorders. The company developed and sells that drug through a collaboration with another drugmaker, Bristol Myers Squibb Co., which also is the largest institutional shareholder in the Cambridge, Massachusetts, company, with more than an 11% stake.

Reblozyl has received approval from regulators in the United States, Europe, Canada and Australia.

The acquisition is expected to close in the fourth quarter.

Shares of Merck & Co. Inc. climbed 71 cents to $75.80 before markets opened Thursday, while Acceleron Pharma Inc. climbed about $1 to $176.35.

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