Loren Washburn is a skilled trial lawyer focusing his practice in the areas of securities litigation, white-collar criminal defense, civil and criminal tax controversy and civil regulatory defense. He also has extensive experience in commercial litigation including high stakes disputes where the future of the company is at stake.

Loren brings more than eight years of experience as a federal prosecutor to each client representation. A former trial attorney for the U.S. Department of Justice Tax Division and an Assistant U.S. Attorney with oversight of a white-collar crime unit, Loren has tried dozens of trials in federal and state courts, Tax Court, Securities and Exchange Commission (SEC) administrative proceedings, Financial Industry Regulatory Authority (FINRA) arbitrations and private arbitrations across the country. His impressive background and deep knowledge of government investigations aid him in representing clients in complex, high-profile matters involving investments, securities regulations, fair trade practices, tax law, tax enforcement, gaming enforcement and other varieties of complex commercial litigation. He has achieved positive outcomes for his clients in criminal, regulatory and civil cases, including prosecution declinations, post-indictment dismissals and favorable trial verdicts.

In addition to representing individuals and companies investigated by the government, Loren represents clients in commercial disputes, especially those with a high likelihood of going to trial. Loren has also taken on pro bono civil rights litigation representing female students against school districts and a high school activities association.


Prior to joining Armstrong Teasdale, Loren spent nearly a decade in private practice with Salt Lake City law firms. He began his career with a clerkship under the Hon. Stephen H. Anderson in the U.S. Court of Appeals for the Tenth Circuit. After his clerkship, Loren became a trial attorney for the U.S. Department of Justice Tax Division’s Northern Criminal Enforcement Section. After two years of prosecuting cases largely within the Eastern United States, Loren moved to Utah, where he served as an Assistant U.S. Attorney and deputy chief of white-collar crime in the United States Attorney’s Office for the District of Utah. While with the Department of Justice, he was on the faculty of courses on the federal rules of evidence, as well as substantive white-collar crime.


  • Harvard Law School  (J.D., cum laude, 2002)
  • Brigham Young University  (B.A., 1998)


  • Utah
  • California
  • Nevada
  • Massachusetts


  • Mountain States Super Lawyers®, Criminal Defense (2018 - present; Rising Star, 2015)
  • Utah Business Legal Elite, Criminal Defense Law (2017)
  • Martindale-Hubbell®, Peer Reviewed


  • Czech
  • Slovak
Contact Us
  • Worldwide
  • Boston, MA
  • Denver, CO
  • Dublin, Ireland
  • 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
abstract image of world map
Boston, MA
800 Boylston St.
30th Floor
Boston, MA 02199
Google Maps
Boston, Massachusetts
Denver, CO
4643 S. Ulster St.
Suite 800
Denver, CO 80237
Google Maps
Denver, Colorado
Dublin, Ireland
Fitzwilliam Hall, Fitzwilliam Place
Dublin 2, Ireland
Google Maps
Edwardsville, IL
115 N. Second St.
Edwardsville, IL 62025
Google Maps
Edwardsville, Illinois
Jefferson City, MO
101 E. High St.
First Floor
Jefferson City, MO 65101
Google Maps
Jefferson City, Missouri
Kansas City, MO
2345 Grand Blvd.
Suite 1500
Kansas City, MO 64108
Google Maps
Kansas City, Missouri
Las Vegas, NV
3770 Howard Hughes Parkway
Suite 200
Las Vegas, NV 89169
Google Maps
Las Vegas, Nevada
London, England
Royal College of Surgeons of England
38-43 Lincoln’s Inn Fields
London, WC2A 3PE
Google Maps
Miami, FL
355 Alhambra Circle
Suite 1250
Coral Gables, FL 33134
Google Maps
Photo of Miami, Florida
New York, NY
7 Times Square, 44th Floor
New York, NY 10036
Google Maps
New York City skyline
Philadelphia, PA
2005 Market Street
29th Floor, One Commerce Square
Philadelphia, PA 19103
Google Maps
Philadelphia, Pennsylvania
Princeton, NJ
100 Overlook Center
Second Floor
Princeton, NJ 08540
Google Maps
Princeton, New Jersey
Salt Lake City, UT
201 South Main Street
Suite 750
Salt Lake City, UT 84111
Google Maps
Salt Lake City, Utah
St. Louis, MO
7700 Forsyth Blvd.
Suite 1800
St. Louis, MO 63105
Google Maps
St. Louis, Missouri
Wilmington, DE
1007 North Market Street
Wilmington, DE 19801
Google Maps
Wilmington, Delaware