Meet the ADR Notable Team!

We are a small but growing company proudly based in Columbus, Ohio, whose mission is to help those who help others resolve disputes.  Our first-of-its-kind cloud-based technology platform will help mediators before a session, during a session, and after a session whether your session is remote or in-person.  Try us out!

Gary Doernhoefer


Gary graduated from Grinnell College and holds a J.D. from the University of Chicago Law School.  Starting out as a litigation associate for Mayer, Brown, Gary soon moved to in-house practice for American Airlines focusing on major case litigation, antitrust and eventually government affairs.  In 2000, he became the initial General Counsel for the travel website Orbitz.  After the Orbitz public offering and subsequent sale in late 2004, Gary co-founded and served as General Counsel for Accertify, Inc., a credit card fraud prevention solution for internet merchants.  Accertify was acquired by American Express in 2010, after which Gary served three years as General Counsel for IATA, the global trade association for the airline industry.  Gary then served as Vice President and General Counsel for travel industry startup Journera, Inc. until shifting his focus to developing ADR Notable. The catalyst for ADR Notable was collaborative work with faculty at the Moritz College of Law at the Ohio State University, studying the potential benefits of greater use of ADR by the airline industry.

Matt Zenko

Chief Operating Officer

An attorney with experience in alternative dispute resolution and accounting, Matt Zenko serves as the Chief Operating Officer of ADR Notable.   Matt’s legal training focused on the areas of negotiation, mediation and arbitration and he has served as either a mediator or client advocate in a wide variety of legal cases.

Sydney Riddle

Marketing Associate

Sydney graduated from the Ohio State University with a degree in journalism and a minor in media production and analysis where she served as editor of the student-run newspaper The Lantern. She serves as a marketing associate and is well-versed in copywriting, editing, communications, and all things digital media.

Kimberlee Klesner


After twenty-five years in higher education administration at the Harvard Business School and Kenyon College, Kimberlee spent ten years designing maps and creating data visualizations for an international publishing company before joining ADR Notable, where she consults on market development and special projects.