John L. Brooks III has joined Boston-based life science investment bank Johnston Blakely & Co. LLC as senior advisor.

In this role, Brooks will participate with the firm on internal and client-related activities, including private equity placements and merger & acquisition advisory services, with a particular focus on medical device transactions.

"We are thrilled to welcome John Brooks to the Johnston Blakely family," said Johnston Blakely founder Benjamin Conway. "Not only does John bring to the firm and its clients a track record of success in both venture capital and the medical device industry, but his decision to join us is also a strong endorsement of Johnston Blakely and its capabilities."

John Brooks co-founded the venture capital firm Prism Venture Partners. During his 10-year tenure with Prism, the firm raised $1.25 billion across six venture funds.

His previous experience also includes senior management positions at Pfizer, both with Pfizer/Valleylab as general manager and with Pfizer/Strato. Brooks has held several vice president of finance and operations positions at successful venture-backed companies and spent more than 10 years in public accounting and consulting focused on supporting venture backed entrepreneurs.