Arboretum Ventures has begun raising a $215 million fourth fund, according to a filing with the SEC.
The new fund will be a substantial step up from the Ann Arbor, Mich.-based firm’s $140 million third fund, raised in 2011, according to Thomson Reuters. The early-stage firm’s 2007 second fund closed at $73 million.
The new fund is being run by Managing Directors Jan Garfinkle, Timothy Petersen and Paul McCreadie.
The document can be found here.