Company Info

David Doctorow | CEO, Director

Over a thirty-year career, David has helped transform and grow some of the world’s best-known technology businesses in the travel, e-commerce, and real estate industries. Before joining Custom Ink, he served as CEO of Realtor.com, where he led the business to record revenue, profit, and consumer satisfaction. Earlier, he led significant growth in eBay’s customer acquisition & retention as head of Global Growth and helped Expedia double its sales and profit as Chief Marketing & Strategy Officer.

Marc Katz | Chairman of the Board

Marc co-founded Custom Ink in 2000 and served as CEO until August of 2024. Marc led Custom Ink from its beginnings as the first company that let people design custom t-shirts online to being the online leader in custom swag and apparel for companies, schools, organizations, groups, and other communities. Prior to founding Custom Ink, Marc worked as a financial analyst at a Wall Street firm. Marc earned his B.A. in Physics from Harvard University. While there, Marc led and supervised public service programs through the Phillips Brooks House Association.

Michael Kumin | Director

Michael is a Managing Partner at Great Hill Partners, a growth-focused private equity firm based in Boston with $5B in assets under management, where he is responsible for transaction origination, investment policy, fundraising, investor relations and the general management of the firm. His investment experience covers a broad range of industries, including consumer, internet, media, software, and business services and he currently serves on a number of public and private company Boards of Directors. Michael received his Bachelor of Arts with honors from the Woodrow Wilson School of Public & International Affairs at Princeton University.

Peter Garran | Director

Peter is a Partner at Great Hill Partners, a growth-focused private equity firm based in Boston with $5B in assets under management, where he is responsible for originating and evaluating investment opportunities in the media, Internet, software, and business and consumer services sectors. In addition to Custom Ink, Peter serves on the board of directors of Bombas, YogaWorks, Educaedu, PuppySpot and CliqStudios. Prior to joining Great Hill Partners, Peter was a vice president at J.P. Morgan, where he led J.P. Morgan’s East Coast Internet & Digital Media coverage effort. Peter earned a degree in history and literature from Harvard College, where he graduated cum laude.

Brian Isaac | Director

Dave Roberts | Director

Seth Palmer | Director

Seth Palmer is a Principal at HarbourVest Partners, an independent, global private markets investment firm with 36 years of experience, where he focuses on sourcing, reviewing, executing, and monitoring direct co-investments. Seth joined the Firm from BlackRock, where he was a director and founding member of BlackRock Private Markets. His previous experience also includes tenures at Weston Presidio and Banc of America Securities. Seth received a BA with high distinction in Economics and Political Science from the University of Michigan and an MBA from Harvard Business School.

Lisa Lewin | Director

Lisa Lewin is a strategist and operating executive with 25 years of experience leading and advising private, public, and nonprofit sector organizations. She is the CEO of General Assembly, a pioneer in education and career transformation offering dynamic courses in data, design, business, technology, and other high-demand skills. Prior, she held various roles at Pearson and McGraw-Hill, and founded Ethical Ventures, a New York City-based management consulting firm advising some of the world’s most ambitious social enterprises and mission-driven companies. Lisa serves on the boards of the Wikimedia Foundation, Bank Street College of Education, and the Leadership Now Project. She received a BS from Washington University in St. Louis and an MBA with honors from Harvard Business School.

Michael Bernstein | Director

Michael is the founder and manager of Partners Edge Funds, a boutique investment fund focused on private equity, growth equity and venture investments. Michael is also the Managing Partner of Woodland Management, Inc., a family investment office founded by Michael and his father. Prior to joining Woodland, Michael served as CEO of Polyconcept, a leading global supplier of promotional merchandise. He led the growth of Polyconcept from a small, family-owned business into a global leader with annual sales close to $1 billion. Michael holds a BA in philosophy from the University of Wisconsin and a JD from the University of Pittsburgh.