Sandra Kelder

Business Development Representative

Sandra Kelder is a Corporate Communications and Business Development Strategist at Marathon Strategies, where she designs and implements strategic, comprehensive corporate communications and public relations programs that help clients achieve their business objectives. She works closely with leadership teams to craft tailored communications strategies, enhance executive visibility, manage stakeholder engagement, and protect enterprise reputation during periods of transformation, transactions, and crisis.  

A global communications leader with more than two decades of experience, Sandra specializes in strategic corporate communications, executive communications, and stakeholder alignment. She has guided organizations across healthcare, financial services, technology, and media through mergers, acquisitions, reorganizations, and enterprise transformations. Sandra is known for positioning communications as a strategic lever that aligns executives, employees, investors, and external audiences during high-stakes situations.  

Throughout her career, Sandra has led communications at the center of high-profile transactions and organizational change. At Thomson Reuters, she supported communications during the landmark Thomson-Reuters merger. As a senior advisor to Celgene and Bristol Myers Squibb, she helped shape executive and corporate messaging during transformational acquisitions. Most recently, as Global Director of Corporate Communications and Public Relations at Alight Solutions, she led global corporate and executive communications during reorganizations, business unit restructurings, and divestitures, while overseeing crisis management and investor engagement.  

Sandra holds a B.S. in International Business and Canadian Studies from SUNY Plattsburgh, with advanced international studies at McGill University and Carleton University. She resides in the New York metropolitan area.