Mark Stermitz is a partner in Crowley Fleck’s Missoula, Montana office. He is co-chair of the firm’s Natural Resource and Environmental Litigation Practice Group. Mark represents clients in projects and litigation covering the gamut of environmental laws including air and water quality, the ESA, NEPA, CERCLA and their state equivalents. He has many years of experience in permitting and transactions for large projects such as pipelines, transmission lines, mines and energy generation facilities, and recently in power plant decommissioning. Mark also represents clients in criminal proceedings relating to such matters.

Before joining Crowley Fleck, Mr. Stermitz was with the prominent Los Angeles entertainment and litigation firm Glaser Weil Fink Howard Avchen & Shapiro, handling energy, environmental and commercial litigation. His prior experience also includes serving as Assistant General Counsel for the Port of Portland, Oregon, with responsibility for environmental and land use matters for the Port’s marine, aviation and real estate operations. Mark was also a trial attorney in the Environment and Natural Resource Division of the U.S. Department of Justice, in Washington, D.C., litigating important federal environmental cases across the U.S.

Mark began his legal career in rural central Montana more than thirty years ago. Except for government service, he has always maintained a busy commercial litigation practice, and conducted many jury trials over the years. He is a Montana native and obtained his undergraduate and law degrees from the University of Montana.

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