NEW HAVEN, Conn., and NEW YORK, January 5, 2022 /PRNewswire/ -- Biohaven Pharmaceutical Holding Company Ltd. (NYSE: BHVN) and Pfizer Inc. (NYSE: PFE), today announced that the parties have completed the collaboration transaction between the two companies. The transaction agreements, including Pfizer’s commercialization of rimegepant and zavegepant outside of the U.S., have become effective following the receipt of required regulatory approvals and the satisfaction of other customary conditions, and BHVN shares have been issued to Pfizer. Biohaven will continue to lead research and development globally and retain rights to the U.S. market.