Clayton H. Gregersen

Clayton H. Gregersen: Attorney with Crowley Fleck PLLP
  • Associate at Crowley Fleck PLLP
  • 500 Transwestern II, 490 North 31st Street, Billings, MT 59103
    View Clayton H. Gregersen's office location
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Clayton Gregersen is an Associate in the Energy, Environmental and Natural Resources Department in the firm's Billings office. His primary areas of practice include oil and gas, environmental and natural resource law and related litigation. Clayton graduated at the top of his class from the University of Wyoming College of Law. While in law school, he was a Rocky Mountain Mineral Law Foundation Scholar, served as an extern for the Honorable Justice William U. Hill of the Wyoming Supreme Court, worked with the Wyoming Attorney General's Water and Natural Resource Division and served on the Wyoming Law Review.

Originally from Big Horn, Wyoming, Clayton enjoys golfing, snowboarding, hiking, hunting and most outdoor activities.

Honors & Awards

Rocky Mountain Mineral Law Foundation Scholar, 2014
Partnered with Justice Kate M. Fox of the Wyoming Supreme Court in the first annual Spence Law Firm Historical Trial

Areas of Practice (14)

  • Business Organizations
  • Litigation
  • Oil and Gas
  • Environmental
  • Environmental Law
  • Clean Air Act, Clean Water Act, and State Equivalents
  • Comprehensive Environmental Response
  • Compensation and Liability Act (CERCLA or Superfund)
  • Resource Conservation and Recovery Act (RCRA)
  • Solid or Hazardous Waste
  • Environmental Due Diligence
  • Tort Litigation
  • Negligence
  • Personal Injury

Education & Credentials

Contact Information:
(406) 252-3441  Phone
Mailing Address:
P.O. Box 2529, Billings, MT 59103
University Attended:
University of Wyoming, B.A., Criminal Justice, 2011
Law School Attended:
University of Wyoming College of Law, J.D., with Honor, 2015
Year of First Admission:
2015, Montana; 2016, Wyoming; 2015, U.S. District Court, District of Montana

Professional Affiliations

State Bar of Montana
State Bar of Wyoming


Peer Reviews

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*Peer Reviews provided before April 15, 2008 are not displayed.


Lex Mundi

Billings, Montana

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