John Moore is a partner in the firm’s Financial and Real Estate Services practice group. His law practice primarily focuses on mergers and acquisitions and real estate transactions. John regularly assists clients of all sizes with commercial, finance and real estate transactions, mergers, acquisitions and restructurings, and general corporate governance and compliance.

John’s background in economics and tax lends well to the complex business transactions he supports today. John counsels clients through all stages of mergers and acquisitions as well as real estate transactions. He often serves as the lead counsel for companies acquiring other businesses, including forming and presenting an initial offer, performing due diligence, negotiating and preparing transactional documents, reviewing and addressing real estate matters, and closing transactions.

John also has experience navigating and advising on SEC and FINRA rules as well as internal policies and written supervisory procedures for broker-dealers and investment advisers. John previously passed and held his Series 7, 24 and 66 licenses.


Before joining Armstrong Teasdale, John served as compliance counsel for a large local broker-dealer advising internal business units on SEC, FINRA, and internal rules and policies. Prior to that, John was an associate at Armstrong Teasdale, advising and representing clients in loan restructurings and workouts, bankruptcy and commercial litigation matters, and documenting complex secured and unsecured financing transactions for institutional lenders and other financial institutions as well as borrowers. While in law school, John served as a legal intern at the United States Attorney’s Office for the Eastern District of Missouri and as a judicial extern for the Honorable Audrey G. Fleissig, United States District Court Judge for the Eastern District of Missouri.


  • Saint Louis University School of Law  (J.D., magna cum laude, 2015)
    • Woolsack Honor Society
    • Academic Excellence Awards (Highest Grade) in Advanced Legal Research and Family Law
    • Saint Louis University Law Journal (Editor)
    • St. Louis University Tax Club (Vice President)
  • Northwestern University  (B.A., Dean's List, 2010)
    • Economics and Political Science
    • Northwestern University Club Baseball Team


  • Missouri
  • Illinois

Professional Activities

  • The Missouri Bar
  • Illinois State Bar Association


  • The Best Lawyers in America® Ones to Watch, Real Estate Law (2024-present)

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