3D Systems Corp said it would buy Israel-based Cimatron for $97 million this week. The 3D printer maker will pay $8.97 per Cimatron share. Cimatron provides 3D design software products and 3D Systems said the deal will close in the first quarter of 2015. Meanwhile, RenaissanceRe said this week it is buying fellow Bermuda-based reinsurer Platinum Underwriters for $1.9 billion to lift its U.S. business. Platinum shareholders will get $76 per share in stock and cash. Finally, BioMarin Pharmaceuticals said it would buy Dutch drug developer Prosensa this week for $840 million including milestone payments. BioMarin will offer $17.75 for every Prosensa share and make two payments of $80 million each following U.S. and European approvals for Prosensa's Duchenne muscular dystrophy drug.