John O’Brien counsels clients in connection with all aspects of lending transactions, mergers and acquisitions and general corporate matters.

He devotes his practice principally to the representation of banks and commercial finance companies. He handles lending transactions, including asset-based and cash flow loans, syndicated credit facilities, loan participations, subordinated debt arrangements, tax credit financings, mezzanine financings, loan workouts, restructuring and foreclosures.

In addition, John advises clients with respect to buying and selling businesses, corporate governance matters, contract negotiation and dispute resolution.


  • Saint Louis University School of Law  (J.D., cum laude, 1993)
  • Rockhurst University  (B.S.B.A., 1987)


  • Missouri, 1993
  • Illinois, 1994

Professional Activities

  • The Missouri Bar
  • Illinois State Bar Association

Charitable and Civic Involvement

  • Tower Grove Park (Member - Building and Grounds Committee; Director – Tower Grove Park Foundation)
  • St. Stephen Athletic Association (Past President)


  • The Best Lawyers in America®; Banking and Finance Law (2013-present)
  • AV® Peer Review Rated, Martindale-Hubbell


John's experience prior to joining the firm included supervisory positions in the banking and finance industry.

Contact Us
  • Worldwide
  • Boston, MA
  • Denver, CO
  • Edwardsville, IL
  • Jefferson City, MO
  • Kansas City, MO
  • Las Vegas, NV
  • London, England
  • Miami, FL
  • New York, NY
  • Philadelphia, PA
  • Princeton, NJ
  • Salt Lake City, UT
  • St. Louis, MO
  • Wilmington, DE
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Boston, MA
800 Boylston St.
30th Floor
Boston, MA 02199
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Boston, Massachusetts
Denver, CO
4643 S. Ulster St.
Suite 800
Denver, CO 80237
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Denver, Colorado
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
3770 Howard Hughes Parkway
Suite 200
Las Vegas, NV 89169
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Las Vegas, Nevada
London, England
200 Strand
London, WC2R 1DJ
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Miami, FL
3250 Mary Street
Suite 102
Coconut Grove, FL 33133
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New York, NY
7 Times Square, 44th Floor
New York, NY 10036
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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
201 South Main Street
Suite 750
Salt Lake City, UT 84111
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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
Wilmington, DE
300 Delaware Avenue
Suite 210
Wilmington, DE 19801
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Wilmington, Delaware