Susan Mattivi Wittner

Vice President


  • New York


Susan Wittner serves as Vice President for Cornerstone Research. As the firm’s former Chief Marketing Officer, she works closely with clients and experts on marketing iniaitives. Ms. Wittner has over thirty years of experience in marketing, including brand strategy, corporate identity, advertising, events, public relations, thought leadership, and social media.

Prior to joining Cornerstone Research, Ms. Wittner held senior marketing roles at EisnerAmper LLP, Agfa Corporation, and Hoechst Celanese. She worked in brand management and business development at Georgia Pacific Corporation (previously James River Corporation) and was a management consultant for a strategic consulting firm. For more than a decade, Ms. Wittner served as an adjunct professor of sales and marketing at Manhattan College.

Professional Affiliations
Press Release

Chief Marketing Officer Named a 2022 Notable Leader in Advertising, Marketing & PR by Crain’s New York Business


International Women’s Day: Break the Bias