Margaret Mary V. Preston is on the board of McCormick & Co., Inc., Otis Elevator Co. and Otis Worldwide Corp. In the past she was Managing Director at Bank of America Corp., Global Chief Financial Officer at Deutsche Bank Trust Corp., Executive Vice President at Mercantile-Safe Deposit & Trust Co., Director-Womens Leadership Council at United Way of New York City, Treasurer of Alex Brown, Inc., Managing Director-Private Wealth Management at US Trust, Managing Director-Private Wealth Management at TD Bank USA, Inc. and Managing Director-North Region Leader at TD Bank, NA.

Margaret Mary V. Preston received an undergraduate degree from Trinity College and an undergraduate degree from Harvard Business School.