John D. Macomber is a Senior Lecturer in the Finance unit at Harvard Business School. His professional background includes leadership of real estate, construction, construction services, and information technology businesses. At HBS, Mr. Macomber is engaged in the Business and Environment Initiative and Social Enterprise Initiative. He teaches Finance, Real Estate, Urbanization, and Entrepreneurship courses in the elective curriculum and in Executive Education. He is the former Chairman and CEO of the George B H Macomber Company, a large regional general contractor; and remains a principal in several real estate partnerships. John serves or has served on the boards of Young Presidents Organization International (YPO), Boston Private Bank, Mount Auburn Hospital, and Vela Systems. Mr. Macomber is a graduate of Dartmouth College (Mathematics in the Social Sciences) and Harvard Business School.