Merck CEO Kenneth Frazier to retire at the end of June
Rare black leader of a major US company, he oversaw development of cancer blockbuster Keytruda
Rare black leader of a major US company, he oversaw development of cancer blockbuster Keytruda
Drugmaker set to close $63bn acquisition of Irish-headquartered Allergan this month
Penalty only $400m if either group walks away after adverse law change
CEO warns that any attempt to block a takeover by Pfizer would be a “short-sighted intervention”
Pfizer expected to issue statement confirming offer rejection today
Pharma firm will expand in faster-growing areas of healthcare
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