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Libby Koziarz

Libby Koziarz serves as Senior Vice President & Trust Officer. She joined FNBC Bank & Trust in 2010 and then the Wealth Management division in 2012. She is responsible for creating integrated wealth management solutions by working with clients, their attorneys, and accountants to form a team that will provide the client with the best possible estate planning and financial advice. She also puts an emphasis on assisting clients transitioning through key life events. 

Libby is a graduate of the University of Illinois at Urbana-Champaign, and a member of the Chicago Estate Planning Council.  She also serves on the board of directors for The LeaderShop, a La Grange nonprofit servicing local youth. 

Josh Mahrt

Joshua Mahrt serves as Executive Vice President and Senior Trust Officer. He joined FNBC Bank and Trust in 2015 as a Vice President and Trust Officer. Josh is the relationship manager for over 100 relationships with a current market value of over $100 million.  Josh services a variety of complex accounts including the settlement of federally taxable estates, advising high net worth individuals on investment and tax strategies, the administration of complex guardianship estates, and the management of a large multi-unit apartment complex. Josh specializes in trust administration, estate settlement, guardianship, and wealth management.

Before joining FNBC Bank and Trust, Josh worked as an attorney for the Cook County Public Guardian’s Office for over nine years. While there, he initially represented abused and neglected minors in child protection cases.  He subsequently transitioned to the Adult Guardianship Division where he spent over eight years administering guardianship estates, litigating contested guardianship matters, and overseeing special needs trusts. 

Josh is a member of the DuPage County Estate Planning Council and the Aging Care Connections, Adult Protective Services, Multidisciplinary Team.  Josh served on the board of Our Community of Illinois, a non-profit corporation that provides resources for minors in the Illinois foster care system.  Josh is a graduate of the University of Illinois at Urbana-Champaign and the John Marshall Law School.


Michael G. O’Reilly

Michael G. O’Reilly has served wealth management clients at FNBC Bank & Trust since 1999.

Michael is a member of the DuPage County Bar Association and the DuPage County Estate Planning Council, where he formally served as President and board member.  He earned his BBA in Finance from the University of Notre Dame (1980) and his JD from the University of Notre Dame Law School (1983). Additionally, he successfully completed the Certified Financial Planner program from the College of Financial Planning (1986).

Legal, investment and tax notice: This information is not intended to be and should not be treated as legal advice, investment advice or tax advice. You should under no circumstances rely upon this information as a substitute for obtaining specific legal or tax advice from your own legal or tax advisers.

FNBC Bank & Trust Wealth Management offers investment products that are not a deposit, not FDIC insured, not insured by any Federal Government Agency, not guaranteed by FNBC Bank & Trust, and may lose value.