On Thursday, January 29, 2026, the Supreme Court of Missouri accepted the surrender of Attorney John J. Diehl Jr.’s license to practice law, effectively disbarring him. The order was issued en banc.
The case is entitled “In the Matter of John J. Diehl Jr.,” with case no. SC101274.
Diehl had previously filed a motion to voluntarily surrender his license. The disbarment follows his admission of misconduct in violation of the Court’s Rules of Professional Conduct. The Court’s decision was informed by the report and recommendation filed by the Chief Disciplinary Counsel.
The ruling mandates that Diehl comply with Rule 5.27, which outlines the procedures following a disbarment or suspension order. Specifically, he must deliver his license to practice law or submit an affidavit attesting to its loss.
Furthermore, Diehl is required to pay $2,000.00 to the Clerk of the Supreme Court, pursuant to Rule 5.19(k), to be credited to the Advisory Committee. The cost of the proceedings is also taxed to Diehl.
A copy of the original filing can be found here.
