Mark is a partner in Hahn Loeser’s Cleveland office and serves as co-chair of the firm’s Estate Planning, Wealth Transfer & Preservation Section. He is an OSBA Board Certified Specialist in Estate Planning, Trust and Probate Law.

At Hahn Loeser

In his work as an estate planning lawyer, Mark has worked extensively with corporate trustees, financial planners and consultants, insurance agents and accountants, and has expertise in the administration of trusts and estates in probate courts in all counties in Northeast Ohio, as well as in other states. Mark also has significant experience in family and succession planning for closely held businesses and has served as general counsel for numerous closely held and family businesses, with clients ranging from smaller, newly formed businesses to long-established, substantial entities. He also offers general representation.


Mark is a founding member and past chairman of the Estate Planning Advisory Council at Case Western Reserve University and a board member of the Lakeview Cemetery Association Foundation. He is also a member of the Planned Giving committee of the Rock and Roll Hall of Fame and has been a member of the Planned Giving Committee of the Cleveland Museum of Art since 2002. He has been a member of the Cleveland Skating Club since 1982, serving on the board of trustees from 1993-96 and a member of the Union Club since 2005.

At home

Mark lives in Shaker Heights, Ohio, with his wife and has four adult children and three grandchildren.



St. Joseph’s College, B.S., magna cum laude, 1970. Honors and activities: Blue Key National Honor Society


Case Western Reserve School of Law, J.D., 1973

Memberships & Affiliations

American Bar Association, Real Property, Probate & Trust Law Section: member


Ohio Bar Association: member. Member, Probate & Trust Law Committee; member, Corporation Law Committee


American College of Trust and Estates Council: member, 1990 to present; Business Planning Committee, 2001 to present


Attorneys for Family Held Enterprises President, 2006 to 2013; charter member; board of trustees, 2001 to 2013; Annual Conference, program chair, 2003-04; treasurer, 2004-06


Cleveland Metropolitan Bar Association, Estate Planning & Probate Section; Executive Committee, member, 1984-86; Estate Planning Institute, 1979-85; chairman, 1982; member, Joint Committee on Reform of Ohio Estate Tax


Tax Incentive Review Council, City of Cleveland: member, 1991 to 2005

Bar Admissions

Admitted to the Ohio Bar, 1973

Awards & Distinctions

The Best Lawyers in America, Trusts and Estates, 1993-2016


Ohio Super Lawyers, Estate Planning and Probate, 2004-17


AV® Preeminent Rated, Martindale-Hubbell


Society of Benchers, Case Western Reserve University School of Law