# Brian Trelstad Senior Common Room Senior Lecturer at Harvard Business School ![Photo of Prof Trelstad](/sites/g/files/omnuum9706/files/styles/hwp_4_5__480x600/public/winthrop-house/files/headshot.png?itok=ZaBZAq3K) email Brian Trelstad is a senior lecturer at Harvard Business School, teaching social entrepreneurship and impact investing, and is the faculty chair of the Harvard Advanced Leadership Initiative. He has spent nearly twenty years in the field of impact investing at Bridges Fund Management and Acumen Fund. He has an MBA from Stanford and a Masters in City Planning from UC-Berkeley. And back in the day he helped Winthrop House (AB Social Studies ’91) take the Strauss Cup with his step back three. - ## Role [Senior Common Room](/role/senior-common-room)