CEO: Arthur Taylor.
Financial information: Raised $50 million.
No. of local employees: About 25.
Investors: Warburg Pincus, The Vertical Group, Delphi Ventures, Hamilton BioVentures, De Novo Ventures.
Year founded: 1997 as Acculaser, became PhotoThera in 2002.
Company description: Biotechnology company developing transcranial infrared laser therapy for people who have suffered an ischemic stroke.