Amgen is sued for concealing $10.7 billion tax bill from investors

Amgen is sued for concealing $10.7 billion tax bill from investors

Source: 
Reuters
snippet: 

Amgen Inc (AMGN.O) has been sued in a proposed class action accusing the drugmaker of waiting too long to tell investors it might owe the Internal Revenue Service $10.7 billion in taxes and penalties.