 NEW YORK--BUSINESS WIRE--Halper Sadeh LLP, a global investor rights law firm, is investigating whether the sale of Kadmon Holdings, Inc. NASDAQ: KDMN to Sanofi for 9.50 per share in cash is fair to Kadmon shareholders. Halper Sadeh encourages Kadmon shareholders to click here to learn more about their legal rights and options or contact Daniel Sadeh or Zachary Halper at 212 763-0060 or or The investigation concerns whether Kadmon and its boa 