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John P. Slay John P. Slay

John “Jack” P. Slay


Jack Slay began his legal career at Hall Estill upon graduating from the Loyola University Chicago School of Law and earning admission to the Oklahoma Bar in 2022. Practicing mainly in the firm's Banking & Financial Services and Corporate & Business Services groups, Jack has experience in a variety of financing transactions, especially commercial loan documentation. He also has experience in employment litigation, specifically disputing the validity and enforceability of non-compete agreements. 

During his time in law school, Jack served as President of the local chapters of both the Catholic Lawyers' Guild and the Federalist Society. Additionally, he participated in Loyola's Business Law Clinic, where he assisted Chicagoans seeking legal support for not-for-profit organizations. Through these experiences, Jack deepened his understanding of and commitment to the principles of charity, social justice, solidarity and subsidiarity and their proper application in business and law.