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Presently, Zachary Koff is Chief Operating Officer for Shake Shack, Inc. In his past career Mr. Koff was Principal at Bravo Brio Restaurant Group, Inc. Mr. Koff received an undergraduate degree from Cornell University School of Hotel Administration.

Jonathan A.
Koff is currently a Partner at Chapman & Cutler LLP.
He graduated from DePaul University in 1985 with a graduate degree and from the University of Illinois in 1982 with an undergraduate degree.

Michael David Koff served as an Independent Non-Executive Director at Solid Gold Resources Corp.
from 2012 to 2013.

Mr. David B.
Koff is Senior Partner at InterMedia Advisors LLC.
Mr. Koff was previously employed as Senior Vice President by Liberty Media International, Inc. He also served on the board at Crown Media Holdings, Inc. and UnitedGlobalCom, Inc. Mr. Koff received a BA degree from Columbia University and a JD degree from the University of California-Los Angeles.

Nadine Koff is the founder and current President of RealTime Medical, Inc. which is founded in 2008.