as of 6/18/2026 3:01:44 AM

Mark Thomas Mc Closkey

McCloskey PC
4472 Lindell Blvd The Nieman Mansion
Saint Louis, Missouri 63108-2404

(314) 721-4000

mtmpnm@gmail.com

Date Admitted

May 28, 1987

Illinois Registration Status

Active and authorized to practice law

Malpractice Insurance

In annual registration, the attorney reported that the attorney, or the attorney’s firm, maintains malpractice insurance.

Public Record of Discipline and Pending Proceedings
Case(s) below are identified by caption and Commission case number. If there is more than one case, the cases are listed from most recent to oldest. A case may have more than one disposition or more than one component to a disposition, in which case each disposition and component is also listed separately within that case record, again in an order from most recent to oldest.

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to access any documents regarding this lawyer that are in our database. Case Research contains most disciplinary opinions of the Supreme Court and most disciplinary orders and board reports issued since 1990. If Case Research does not contain the information you are seeking, please contact the Commission's Clerk's Office for assistance. Contact information for the Clerk's office is available under Clerk's Office Services.

In re Mc Closkey, Mark Thomas, 2022PR00058
(One of multiple dispositions on this case)
Disposition Suspension for a specified period of time and until further order of the Court. Suspension stayed in whole.
Effective Date of Disposition 09/21/2022
End Date of Disposition 09/21/2022
Definition of Disposition The Supreme Court may order that a suspension be stayed in whole, typically in connection with an order of probation. A stay defers the suspension as long as the lawyer complies with probationary conditions. If the lawyer successfully completes probation, the lawyer is not actually suspended during any portion of the stayed suspension. Under those circumstances, the stayed suspension does not affect the authority of the lawyer to practice law and the lawyer may practice law during the stayed suspension. If the Court determines that the lawyer has failed to comply with probationary conditions, the Court may vacate the stay and may require that the lawyer actually serve the full suspension.
Case Summary Mr. McCloskey was licensed in Illinois in 1987 and in Missouri in 1986. The Missouri Supreme Court indefinitely suspended him, with the suspension fully stayed by a one-year period of probation with conditions, and ordered that, should probation be revoked and the suspension take effect, no petition for reinstatement would be considered for a period of six months from the date the suspension became effective. He pled guilty to misdemeanor assault for waiving a semi-automatic rifle in the direction of protesting individuals outside of his home, purposefully placing at least one other person in apprehension of immediate physical injury. The Supreme Court of Illinois imposed reciprocal discipline and suspended him for six months and until further order of the Court, with the suspension stayed in its entirety by a one-year period of probation, nunc pro tunc to February 8, 2022, subject to the conditions imposed in Missouri and continuing until he successfully completes his Missouri probation.
In re Mc Closkey, Mark Thomas, 2022PR00058
(One of multiple dispositions on this case)
Disposition Probation
Effective Date of Disposition 02/08/2022
End Date of Disposition 02/09/2023 Probationary condition(s) satisfied.
Definition of Disposition Probation reflects a determination that the lawyer has engaged in misconduct, but also a finding that the lawyer may continue to practice law pursuant to specified conditions under ARDC supervision without posing a risk to the public, profession, or courts. As a result, the lawyer may continue to practice law during the period of probation, subject to the conditions imposed by the Court. Probation may be ordered for a specified period of time or for a specified period of time and until further order of the Court. Probation may be ordered in conjunction with a suspension, which may be stayed in whole or in part. A stay defers that portion of the suspension as long as the lawyer complies with probationary conditions. If the lawyer successfully completes probation, the lawyer is not actually suspended during any portion of the stayed suspension.
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