Mario Sullivan

Johnson & Sullivan Ltd

Contact Details

Johnson & Sullivan Ltd


Mario A. Sullivan is a named partner at Johnson & Sullivan, Ltd. in Chicago, Illinois.  He counsels clients on a wide range of issues relating to real estate, landlord/tenant, creditor bankruptcy, employment, contract law, business formation, and estate planning.  Mr. Sullivan is a member of the Chicago Bar Association (CBA), the Illinois State Bar Association, and the American Bar Association (ABA).  In addition, he is a member of the National LGBT Bar Association (LGBT Bar) and Lesbian and Gay Bar Association of Chicago (LAGBAC). 


Mr. Sullivan serves as 2016-17 GPSolo Diversity Fellow; 2014-2017 Nominating Committee Representative for the ABA Young Lawyers Division (YLD); a 2015-2017 Center Member on the ABA Center for Racial and Ethnic Diversity; Co-Chair to the ABA Section for Civil Rights and Social Justice Bullyproof Committee; and a Board Member and Co-Chair of the Program Committee for the LAGBAC 


Mr. Sullivan is a former PILI Intern and member of the Public Interest Law Initiative (PILI) Alumni Network Leadership Council, and has previously served as: a Ex Officio Board Member to the LGBT Bar; a 2014-2015 YLD Liaison to ABA Judicial Division and American Bar Endowment; a 2014-2015 Council Member on the ABA Council on Racial and Ethnic Diversity in the Educational Pipeline Council; 2013-2014 YLD Chair, 2012-13 YLD Chair-Elect, 2011-2012 YLD Secretary-Treasurer, 2010-2011 YLD Conference, Program, and Products Director, 2009-2010 YLD Diversity Director, Committee member to the ABA YLD Diversity Team and Resolutions Team, and National Representative for the LGBT Bar to the YLD; Vice-president of LAGBAC; Planning Committee - Fundraising member for Equality Illinois 2005 Gala; Chair of the local host committee for the LGBT Bar’s Lavender Law – 2007; a and Chair and vice-Chair of the CBA Committee on the Legal Rights of Lesbians and Gay Men.


Mr. Sullivan was named as one of the LGBT Bar’s 2015 Best LGBT Lawyer under 40, received the Star of the Year from the YLD for the 2009-2010 and 2010-2011 bar year, received the YLD Star of the Quarter from the YLD 2008, and received the American Law Institute – ABA Scholarship and Leadership Award, 2005.


Mr. Sullivan graduated from the Illinois State University in 2000 and obtained his J.D. from The John Marshall Law School in 2005. 


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