Greg Omer has more than 25 years of experience in banking and corporate law.

With a background as general counsel for a $20 billion regional banking company and chief counsel for a state bank regulatory authority, Greg has extensive knowledge of a variety of banking law issues, including mergers and acquisitions, corporate governance, federal and state bank regulatory issues, cybersecurity, examination and enforcement action matters and anti-money laundering issues.

He has represented clients ranging from nationwide banking organizations to regional and community banks. He is a noted author and speaker on current bank industry and regulatory developments and has been recognized as an industry leader in roles including:

  • Chair - Missouri Bankers Association Legal Advisory Board
  • Chair - Missouri Bank Regulatory Reform Task Force
  • Chair - American Bar Association - State Banking Law Subcommittee
  • Chair - St. Louis Bank Counsel Roundtable

Greg has served as an expert witness in major bank industry litigation and has been quoted in Bloomberg BNA and cited in various law journals on cutting edge banking law topics.  He has also been a law school lecturer on the U.S. bank regulatory system.


Prior to joining Armstrong Teasdale, in addition to his in-house and bank regulatory experience, Greg was also previously a partner at two major nationwide law firms.


  • Duke University  (J.D., 1990)
  • University of Missouri-Columbia  (B.J., magna cum laude, 1987)


  • Missouri

Professional Activities

  • The Missouri Bar (1990-present)
  • American Bar Association
    • State Banking Law Developments Subcommittee (Chair, 2018-2021; Vice Chair, 2016-2018)
  • Missouri Bank Regulatory Reform Task Force (Chair, 2017-2019)
  • Missouri Bankers Association
    • Deposit Insurance Modernization Task Force (Member, 2023)
    • Legal Advisory Board (Chair, 2016-2017; Vice Chair, 2015-2016; Board Member, 2002-2010, 2015-present)
    • Government Relations/Regulatory Affairs Committee (Vice Chair, 2021-2023; Advisory Member, 2012-2016)
  • St. Louis Bank Counsel Roundtable (Chair/Leader, 2023-present)
  • Conference of State Bank Supervisors – legal conference speaker

Charitable and Civic Involvement

  • Bailey Youth Enrichment Foundation (Legal Advisor, 2010-2019)
  • Washington Youth Basketball Club (2004-2009, Founder/Coach)


  • In-House Counsel Award, Missouri Lawyers Media (2020)
  • The Best Lawyers in America® (2007-2019)
Contact Us
  • Worldwide
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  • Jefferson City, MO
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  • New York, NY
  • Orange County, CA
  • Philadelphia, PA
  • Princeton, NJ
  • Salt Lake City, UT
  • St. Louis, MO
  • Washington, D.C.
  • Wilmington, DE
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Boston, MA
800 Boylston St.
30th Floor
Boston, MA 02199
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Chicago, IL
100 North Riverside Plaza
Suite 1500
Chicago, IL 60606-1520
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Denver, CO
4643 S. Ulster St.
Suite 800
Denver, CO 80237
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Fitzwilliam Hall, Fitzwilliam Place
Dublin 2, Ireland
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Edwardsville, IL
115 N. Second St.
Edwardsville, IL 62025
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Edwardsville, Illinois
Jefferson City, MO
101 E. High St.
First Floor
Jefferson City, MO 65101
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Kansas City, MO
2345 Grand Blvd.
Suite 1500
Kansas City, MO 64108
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Las Vegas, NV
7160 Rafael Rivera Way
Suite 320
Las Vegas, NV 89113
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London, England
Royal College of Surgeons of England
38-43 Lincoln’s Inn Fields
London, WC2A 3PE
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Miami, FL
355 Alhambra Circle
Suite 1200
Coral Gables, FL 33134
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New York, NY
7 Times Square, 44th Floor
New York, NY 10036
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19800 MacArthur Boulevard
Suite 300
Irvine, CA 92612
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2005 Market Street
29th Floor, One Commerce Square
Philadelphia, PA 19103
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Princeton, NJ
100 Overlook Center
Second Floor
Princeton, NJ 08540
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Princeton, New Jersey
Salt Lake City, UT
222 South Main St.
Suite 1830
Salt Lake City, UT 84101
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St. Louis, MO
7700 Forsyth Blvd.
Suite 1800
St. Louis, MO 63105
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Washington, D.C.
1717 Pennsylvania Avenue NW
Suite 400
Washington, DC 20006
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Wilmington, DE
1007 North Market Street
Wilmington, DE 19801
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Wilmington, Delaware