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Pfizer Completes Acquisition of Biohaven Pharmaceuticals

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Pfizer Completes Acquisition of Biohaven Pharmaceuticals | Pharmtech Focus

Pfizer Inc. (NYSE: PFE) announced today the completion of its acquisition of Biohaven Pharmaceutical Holding Company Ltd., the maker of NURTEC® ODT (rimegepant), an innovative migraine therapy approved for both acute treatment and prevention of episodic migraine in adults.

The acquisition brings to Pfizer a portfolio of promising calcitonin gene-related peptide (CGRP) receptor antagonists including:

  • Rimegepant:
    • Approved in the United States under the trade name NURTEC® ODT, in adults for both the acute treatment of migraine with or without aura and the preventive treatment of episodic migraine
    • Approved in the European Union under the trade name VYDURA® for both the acute treatment of migraine with or without aura in adults and the preventive treatment of episodic migraine in adults who have at least 4 migraine attacks per month
  • Zavegepant:
    • New Drug Application (NDA) for intranasal spray for the acute treatment of migraine under U.S. Food and Drug Administration (FDA) review, with a Prescription Drug User Fee Act (PDUFA) goal date in 1Q 2023
  • A portfolio of pre-clinical CGRP assets

“We are proud to build on Pfizer’s legacy of delivering breakthrough medicines for patients living with complex pain disorders,” said Aamir Malik, Executive Vice President, Chief Business Innovation Officer, Pfizer. “The success of NURTEC® ODT coupled with Biohaven’s CGRP pipeline will strengthen Pfizer’s innovative Internal Medicine pipeline through 2030, and beyond. Combined with Pfizer’s global reach, this acquisition increases our potential to bring new treatment options to patients with migraine – a disease which affects over 1 billion people worldwide.”i

Pfizer acquired all of the outstanding shares of Biohaven not already owned by Pfizer for $148.50 per share in cash, for a total transaction consideration of approximately $11.6 billion. As a result of the acquisition, Biohaven became a wholly-owned subsidiary of Pfizer.

Effective immediately prior to the closing of the acquisition, Biohaven completed the spin-off of Biohaven Ltd. (NYSE: BHVN), distributing Biohaven Ltd.’s shares to Biohaven’s shareholders. Biohaven Ltd., a new company that retained Biohaven’s non-CGRP development stage pipeline compounds, holds the Kv7 ion channel activators, glutamate modulation, and myostatin inhibition platforms, preclinical product candidates, and certain corporate infrastructure assets excluded from the Pfizer acquisition. Pfizer, a Biohaven shareholder, received a pro rata portion of Biohaven Ltd.’s shares in the distribution and owns approximately 3% of Biohaven Ltd. Biohaven Ltd. will continue to trade on the New York Stock Exchange under the ticker “BHVN”.

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