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

With a background that includes both government and in-house experience, Greg has extensive knowledge of a variety of banking and corporate issues, including regulatory issues and applications; interstate banking; cybersecurity; mergers and acquisitions; issues relating to anti-money laundering; and examination, supervisory and enforcement matters.

He has represented clients ranging from nationwide banking organizations to regional and community banks, along with other financial services companies. Greg is also experienced in drafting legislation and regulations.


Prior to joining Armstrong Teasdale, Greg was general counsel and executive vice president at a regional bank holding company. He was also previously a partner at two major nationwide law firms and served as chief counsel for the Missouri Division of Finance, the state bank regulatory authority in Missouri.


  • 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-present; Advisory Member, 2012-2016)
  • Conference of State Bank Supervisors

Charitable and Civic Involvement

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


  • In-House Counsel Award, Missouri Lawyers Media (2020)
  • The Best Lawyers in America® (2007-2019)
Contact Us
  • Worldwide
  • Boston, MA
  • Chicago, IL
  • Denver, CO
  • Dublin, Ireland
  • Edwardsville, IL
  • Jefferson City, MO
  • Kansas City, MO
  • Las Vegas, NV
  • London, England
  • Miami, FL
  • 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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Boston, Massachusetts
Chicago, IL
100 North Riverside Plaza
Suite 1500
Chicago, IL 60606-1520
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Chicago, Illinois
Denver, CO
4643 S. Ulster St.
Suite 800
Denver, CO 80237
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Denver, Colorado
Dublin, Ireland
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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Jefferson City, Missouri
Kansas City, MO
2345 Grand Blvd.
Suite 1500
Kansas City, MO 64108
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Kansas City, Missouri
Las Vegas, NV
7160 Rafael Rivera Way
Suite 320
Las Vegas, NV 89113
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Las Vegas, Nevada
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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Orange County, CA
19800 MacArthur Boulevard
Suite 300
Irvine, CA 92612
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Philadelphia, PA
2005 Market Street
29th Floor, One Commerce Square
Philadelphia, PA 19103
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Philadelphia, Pennsylvania
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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Salt Lake City, Utah
St. Louis, MO
7700 Forsyth Blvd.
Suite 1800
St. Louis, MO 63105
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St. Louis, Missouri
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