Sanofi (SNY) to Buy Kadmon for $1.9B, Add cGVHD Drug Rezurock Posted byZacks Equity Research September 8, 2021 Leave a comment on Sanofi (SNY) to Buy Kadmon for $1.9B, Add cGVHD Drug Rezurock Sanofi (SNY) offers $1.9 billion to buy Kadmon Holdings to strengthen its transplant business.