
Tammy Johnson, EMBA, PMP
CEO, President, and Chair of the Board
Employee Owner Since 1991
Tammy Johnson leads Merrick with a vision for strategic growth, operational excellence, and a steadfast commitment to our legacy of employee ownership. In her more than three decades at Merrick, she has played an integral role in our company’s growth, from her early days as a structural engineer to spearheading major business initiatives. As CEO, President, and Chair of the Board, Tammy guides the long-term direction of Merrick, helping ensure alignment between leadership, strategy, and governance. Her work centers on thoughtfully expanding our markets and capabilities while staying rooted in our purpose, vision, and values. Tammy is dedicated to building a strong, sustainable future for Merrick—one that balances technical excellence with meaningful career opportunities for our employee owners.