as of 6/18/2026 6:07:48 AM

Katherine Anne Dierdorf

155 Calais Ct SE
Grand Rapids, Michigan 49546

(720) 865-2844

Not available

Date Admitted

May 10, 2012

Illinois Registration Status

Not authorized to practice law due to discipline and has not demonstrated required MCLE compliance – Last Registered Year: 2019

Malpractice Insurance

No malpractice report as attorney is disciplined

Public Record of Discipline and Pending Proceedings
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In re Dierdorf, Katherine Anne, 2020PR00054
Disposition Suspension with condition(s)
Effective Date of Disposition 12/04/2020
End Date of Disposition
Definition of Disposition A suspension with conditions reflects a determination that the lawyer has engaged in misconduct and that the misconduct warrants both an interruption of the lawyer's authority to practice law during the suspension period, and the imposition of conditions with which the lawyer must comply. The suspension may be for a fixed period of time or for a fixed period of time and until the lawyer complies with the conditions. The lawyer is not authorized to practice law during the period of the suspension.
Case Summary Ms. Dierdorf was licensed in Missouri in 2011 and in Illinois in 2012. The Supreme Court of Missouri suspended her with no application for reinstatement to be considered by the Court for a period of three years. While acting as an assistant circuit attorney in St. Louis, Ms. Dierdorf concealed information from her supervisors and the Federal Bureau of Investigation in the course of a criminal investigation. The Supreme Court of Illinois imposed reciprocal discipline and suspended her in Illinois for three years and until she is reinstated in Missouri. The suspension is effective on December 4, 2020.
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