FinancingsAriad Pharmaceuticals Inc. raised $224 million in a public stock offering.Cell Therapeutics Inc. is raising $20 million in a registered direct offering of stock and warrants.Cerulean Pharma Inc. closed a $15 million Series D financing.Ember Therapeutics raised $34 million in Series A financing for obesity and diabetes drugs.ImmusanT Inc. raised $20 million in a Series A round for celiac disease vaccine Nexvax2.