HOK (firm)

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HOK Group, Inc.

Company type	Private
Industry	Architecture, engineering, urban planning
Founded	1955; 69 years ago (1955)
Founders	George Hellmuth Gyo Obata George Kassabaum
Headquarters	St. Louis, Missouri , United States
Number of locations	26 offices
Area served	International
Key people	Eli Hoisington Susan Klumpp Williams (Co-CEOs) Carl Galioto (President)
Services	Architecture, Consulting, Engineering, Experience Design, Interiors, Landscape Architecture, Lighting Design, On-Site Space Management, Planning + Urban Design, Sustainable Design
Number of employees	1,600[1]
Website	www.hok.com

HOK, formerly Hellmuth, Obata + Kassabaum is an American design, architecture, engineering, and urban planning firm. Founded in 1955 it is now registered as HOK Group, Inc.