Brian Hackler joined Cornerstone in November 2020 as lead of the firm’s flagship office in Oklahoma City. He spent over a decade working for Sen. Jim Inhofe (R-OK). The last five years he served as Sen. Inhofe’s his deputy chief of staff and state director.

Brian has experience working with clients across industries including defense and national security, the life sciences, venture capital, energy and agriculture.

Prior to his time in politics, Brian served in the United States Marine Corp from 2003 to 2007, where he played a key role in developing and carrying out daily strategic operations, including combat patrols, safeguarding government facilities and gathering intelligence. Brian was deployed to Iraq in 2004 and 2005.

Brian currently resides in Edmond, OK with his wife and four children. He received a Juris Doctorate from the Oklahoma City University School of Law and a Bachelor of Arts degree in philosophy from the University of Central Oklahoma.