Entra Pharma Raises $4.2M

Xconomy Boston — 

Entra Pharmaceuticals, a Waltham, MA-based drug delivery startup, raised $4.2 million in the first tranche of a Series A venture financing, according to PE Hub, which cited a regulatory filing. The round could be expanded to $12.5 million by the end of November if Entra reaches certain milestones. Flybridge Capital Partners and North Bridge Venture Partners are backing the company.