Amgen Inc (AMGN.O) is set to buy biotech firm Horizon Therapeutics Plc (HZNP.O) at a valuation of about $26 billion in what would be its largest acquisition, Bloomberg News reported on Monday.
The U.S. biotechnology company has offered about $116.5 for each Horizon share, according to the report, citing a person familiar with the matter. The offer is at about a 20% premium to Horizon's closing price of $97.29 on Friday.
The report comes after French health group Sanofi (SASY.PA) said on Sunday that it no longer intends to make an offer for Horizon.
Last month, Horizon Therapeutics - which has a market capitalization of about $22 billion - had said it was in talks with Amgen Inc (AMGN.O), Sanofi and Johnson & Johnson's Janssen Global Services unit (JNJ.N), all three of whom have been active in deal-making this year.
Janssen also pulled out of the race last week, saying that it does not intend to make an offer for Horizon.
The Wall Street Journal first reported on Sunday that Amgen is in advanced talks to buy Horizon.
