Mark Zweig, founding partner of Natick architecture and construction consulting firm ZweigWhite, has taken on the role of chief executive officer.

Zweig will be leading the company from its Fayetteville, Ark., office.

"I am really excited to be back involved with ZweigWhite in a meaningful way. We will return to the principles that allowed us to be named twice to the Inc. 500 List of Fastest Growing privately-held businesses and reestablish our leadership in providing management information and advice to help make our A/E/P and environmental firm clients more successful," he said.

Ed Friedrichs has joined the firm as chairman. He is the former chief executive officer of Gensler Architecture Design and Planning Worldwide.

Tracey Jeffers has joined the firm as head of the national business valuation practice. ZweigWhite has also acquired Jeffers’ firm, ValuPath Advisors Inc., a national valuation firm.

Wendy MacColl, has joined the firm as head of new product development and will serve as director of distance learning and market councils. She will be working on several new innovative products for the AEC community to be launched in the coming months.

MacColl is formerly the head of instructional design at the Sam M. Walton College of Business at the University of Arkansas.

Jeff Clark has joined ZweigWhite as head of M&A in its investment banking division. He has worked for several years with ZweigWhite’s parent company, Eli Global, as an M&A consultant, handling 19 engagements totaling more than $150 million in transaction value. Prior to working with Eli Global, Jeff provided strategic consulting services to Syska Hennessy in the AEC space and for several F500 companies.

W. Hobson Hogan has joined the firm as principal in its investment banking division. Hobson is a mergers and acquisitions professional with deep experience assisting AEC firms with strategy formulation and ownership transfer issues, according to a statement. Prior to joining ZweigWhite, Hobson was with FMI Capital Advisors Inc.