Born and raised in Texas, Don Haslam earned a degree in economics at the University of Chicago, where he was quarterback and pitcher on NCAA teams. He self-financed his education teaching SAT prep and trading financial futures on the floors of the Chicago Board of Trade and the Chicago Mercantile Exchange. On graduation, he joined several large banks as a bond, currency and derivatives trader, including NationsBank Texas, where he also managed a bond portfolio in excess of $50 million. He put himself through Tulsa University Law School while Vice President and foreign exchange trader at Liberty Bank & Trust in Tulsa, a $2 billion bank ultimately acquired by Bank of America.

Haslam began his legal career at Riggs, Abney, Neal, Turpen, Orbison and Lewis, one of Oklahoma’s largest law firms, where his work focused on business transactions for large corporate and government clients.

He established The Haslam Law Firm, PLLC in 2000 to refocus his practice in litigation. From 2007 to 2011, Haslam was the public defender in three SE Oklahoma counties, personally defending in excess of 500 felonies and 400 misdemeanors. He has served as Chancellor for the Diocese of the Southwestern States [the Anglican Church] and board member of Domestic Abuse Helpline for Men and Women, a national organization that assists people in abusive relationships and rejects the myth that these relationships more often afflict women than men.

Haslam is a trial lawyer admitted to practice in the Eastern, Western, Southern, and Northern District Federal Courts in Texas, the Eastern, Western, and Northern District Federal Courts in Oklahoma [there is no Southern District in Oklahoma], as well as the Oklahoma and Texas state court systems. He is also admitted to practice before the Supreme Court of the United States and the Fifth and Tenth Circuit Courts of Appeals.