SALT LAKE CITY--(BUSINESS WIRE)--Crocker Ventures, a privately held Utah-based investment firm focused on early-stage biotechnology and other life science investments, today announced that it has deployed $3.3 million in a $60 million F round for Merrimack Pharmaceuticals completed in June 2008. The most recent investment brings Crocker Ventures’ total investment in Merrimack to approximately $9 million.