• Ann Arbor
    201 S. Division Street
    Suite 400
    Ann Arbor, MI 48104
    T 734-761-3780
  • Detroit
    1901 St. Antoine Street
    6th Floor at Ford Field
    Detroit, MI 48226
    T 313-259-7777
  • Grand Rapids
    99 Monroe Avenue NW
    Suite 300
    Grand Rapids, MI 49503
    T 616-205-4330
  • Troy
    201 W. Big Beaver Road
    Suite 500
    Troy, MI 48084
    T 248-743-6000
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competitive drive

Herold 'Mac' Deason

Of Counsel,Detroit

T 313-393-7556F 313-393-7579313-393-7556

  • Northwestern University Law School, J.D.
  • Albion College, B.A.
  • Michigan

Mr. Deason concentrates his practice in corporate and business law including corporate governance, finance, organization, mergers and acquisitions, and commercial transactions. He is an expert in local government law and served as a director and as president of the Michigan Association of Municipal Attorneys.

Mr. Deason has extensive experience in aviation law. He counsels individuals and corporations in the acquisition of private aircraft and represents the owner of a major fixed base operator of executive and corporate aircraft and its management company. He has also advised numerous purchasers of fractional interests in executive aircraft.

Mr. Deason has extensive commercial and legal experience involving core manufacturing and service industries, including operational as well as merger and acquisition counseling in automotive, banking, cement, data processing, enterprise software, firearms, general aviation, health care, paper and specialty chemical industries.

Mr. Deason serves or has served on many privately held corporate, nonprofit and educational boards. He is a member of the Law Board at Northwestern Pritzker School of Law and a member of the External Advisory Committee to the Gerald R. Ford Institute for Public Policy and Service at Albion College. He is a former president of the Canada-U.S. Business Association, a former president of the American Heart Association — Grosse Pointe Division, and a former member of the audit committee of Bon Secours Hospital. He served on the boards of directors of Techform Products Limited and Kent-Gamebore Corporation.

In 2017, Northwestern Pritzer School of Law honored Mr. Deason with its Alumni Service Award. He has been listed in The Best Lawyers in America under Corporate Law for more than twenty consecutive years. He was listed as a 2015 Top Lawyer in Corporate Law by DBusiness magazine. He is AV Preeminent® Peer Rated by Martindale-Hubbell.

Honors, Awards, and Recognition
  • Alumni Service Award, Northwestern Pritzker School of Law, 2017
  • The Best Lawyers in America® 2003-2024, Corporate
  • DBusiness Magazine “Top Lawyers” 2009-2013, 2015, Corporate
  • Martindale-Hubbell® AV Preeminent® Peer Rated for Highest Level of Professional Excellence; Endorsed for High Ethical Standing
Civic, Cultural and Community Activities
  • Northwestern Pritzker School of Law, Law Board Member
  • Albion College Gerald R. Ford Institute for Public Policy and Service, Visiting Committee


Practices & Industries Education
  • Northwestern University Law School, J.D.
  • Albion College, B.A.
  • Michigan