Mark L. Stermitz is a Partner in the Missoula office and is co-chair of the firm’s Natural Resources and Environmental Litigation Practice Group. Mark is a highly experienced litigator and advisor with many years of experience in large cases or projects that involve environmental laws such as water quality, air quality, facility siting, endangered species, migratory birds, and site contamination. Mark has a deep background in natural resource related strategies or disputes involving many different federal or state agencies, and in eminent domain for public projects. He also maintains an active civil litigation practice. Mark has tried many cases from inception through a jury verdict, and appeal.

Before joining Crowley Fleck, Mark was with the prominent Los Angeles entertainment and litigation firm Glaser, Weil, Fink, Jacobs, Howard & Shapiro, LLP. His previous experience includes serving as a trial attorney with the Environment and Natural Resource Division of the U.S. Department of Justice in Washington, D.C. Mark also served as in-house counsel for the Port of Portland (Oregon), with responsibility for the legal aspects of environmental compliance, natural resource and land use management for the Port’s marine, aviation and business market lines. He is licensed to practice, and actively does, in Montana, North Dakota, California, and Oregon.

Practice Areas

Bar Admission

Montana, 1983
U.S. District Court, District of Montana, 1983
Oregon, 2002
U.S. District Court, District of Oregon, 2002
California, 2007
U.S. District Court, Central District of California, 2007
9th Circuit Court of Appeals, 2009
North Dakota
U.S. District Court, District of North Dakota


1983 – J.D., University of Montana School of Law
1980 – B.A., University of Montana

Prior Experience (Employment)

Mark Stermitz has thirty years of experience in courtrooms ranging from rural Montana to Washington, D.C. and Los Angeles. Mark’s experience includes service as a trial attorney in the Environment and Natural Resources Division of the U.S. Justice Department, and in-house counsel for environmental and land use matters with the Port of Portland, Oregon. Before returning to Montana to join Crowley Fleck, Mark was with the prominent Los Angeles firm Glaser, Weil, Fink, Jacobs & Shapiro.

Honors & Awards

Best Lawyers in America for Environmental Law and Natural Resources Law (2013- Present)
AV Preeminent Rating by Martindale-Hubbell
U.S. Attorney General’s Special Achievement Award
Montana Justice Foundation – Champion of Justice (2014)

Professional Affiliations

State Bar of Montana
Oregon State Bar Association
California State Bar Association
North Dakota State Bar Association
American Bar Association

Presentations & Publications

Author, Paris Climate Accord, Best Lawyers, September 1, 2017