Robotics startup led by iRobot’s co-founder raises just under $4M

Tertill Corp., a local startup making gardening robots, is raising new funds, CEO Helen Greiner told the Business Journal. Greiner, who co-founded Bedford-based iRobot Corp. (Nasdaq: IRBT) in 1990, was chairman and president of Bedford-based company from its startup phase through the company’s IPO in 2005.