DBV Technologies SA said George Horner III resigned from the company's board for personal reasons.
Horner had been serving as a director of the company since 2010. The board has not yet appointed a new director and will make a decision later.
The company also appointed David Schilansky as deputy CEO and Charles Ruban as COO.
Susanna Mesa was promoted to the position of chief business officer, while Magali Richard was promoted to the position of chief strategy officer.
Meanwhile, Sébastien Robitaille was promoted to chief transformation officer.