Bill Valentine, who helped solidify HOK‘s position as a global leader in sustainable, human-centered design through his role as principal, president and, later, chairman, died June 25 in Mill Valley, California. He was 88 years old. As a pivotal member of the firm, which won a 2026 NYCxDESIGN Award for Terminal B, LaGuardia Airport, Valentine built a decades-long career, championing an approach to architecture rooted in simplicity, sustainability, and public service.