Kabir Shahani, who left his position as CEO of Seattle-based marketing tech startup Amperity without public explanation last week, is also no longer on the company’s board, according to people with knowledge of the situation. In a phone call responding to GeekWire’s inquiry over the weekend, Shahani said he left the company voluntarily for personal reasons. Amperity executives including new CEO Barry Padgett have not answered or acknowledged messages over the past week seeking comment on the reasons for Shahani’s departure.