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After more than 30 years in a complex civil litigation practice, Glenn E. Tremper, Esq. is now exclusively providing neutral mediation and arbitration services.  Glenn has particular experience and skills in the litigation of construction defects and disputes, complex commercial litigation, insurance coverage and claims handling, family farm and ranch disputes, corporate and partnership breakups, and personal Injury.  Regardless of the nature of a dispute, Glenn is trained and equipped to help the parties find ways to more constructively discuss and negotiate a resolution of their differences. 

In his legal practice, Glenn has represented homeowners, owner associations and other parties in construction negligence claims throughout Montana.  Over the last 12 years, he has successfully concluded complex negligence claims involving over 65 structures and 105 living units.  He previously represented general contractors, subcontractors, suppliers and project owners on a variety of construction-related contractual disputes.  He has served as a project owner’s representative in the design, construction and maintenance of several large commercial and religious buildings.

Glenn has also represented clients in numerous complex commercial disputes, insurance coverage and claims-handling disputes, commercial redevelopment and leasing, estate litigation, corporate and partnership breakups, securities litigation and personal injury litigation.  

He has served as a mediator on dozens of litigated cases since 2015, and has represented one or more parties in over 70 separate mediations over the past 12 years.   Since November of 2019, he is no longer taking on litigated matters in order to offer neutral and impartial dispute resolution services.

Glenn Tremper

Glenn E. Tremper


1984 - 1987 - University of Montana School of Law, Missoula, Montana, J.D. (High Honors)

1980 - 1984 - Carroll College, Helena, Montana, B.A. Philosophy, B.A. Theology (Maxima Cum Laude)

1976 - 1980 - Bozeman Senior High School, Bozeman, Montana.

Relevant Training

June 22 - 24, 2017 - Mediation of Complex Construction Disputes (18 hours), Straus Institute for Dispute Resolution, Pepperdine Law School, Malibu, California.

August 3 - 8, 2015 - Mediating the Litigated Case (42 hours), Straus Institute for Dispute Resolution, Pepperdine Law School, Malibu, California.

June 23, 2015 - Kick-Starting an Arbitration: Determining an Arbitrator’s Authority and Disclosures (1.5 hours), ABA Center for Professional Development (Live Webinar)

May 5, 2015 - Debunking the Myths and Misperceptions of Construction Arbitration (1.5 hours), American Arbitration Association (Recorded Webinar)

April 27, 2015 - The Dynamics of Multi-Party Mediation for Large, Complex Construction Disputes (1.6 hours), American Arbitration Association (Recorded Webinar)

April 23, 2015 - Best Use of Med-Arb: The Advantages (1.6 hours), American Arbitration Association (Recorded Webinar).

May, 2013, 2016 & 2018 - Three-time Attendee at West Coast Casualty Construction Defect Conference, Anahiem, California. 

Relevant Presentations

January 18 - 19, 2019 - “Being In Conflict: The Softer (but Harder) Side of Resolving Disputes,” 2019 CLE & Ski, State Bar of Montana CLE Institute, Big Sky, Montana.

October 26, 2018 - “On the Hook: General Contractors, Subcontractors and Joint and Several Liability in Montana (How do you Solve a Problem like Metro Aviation?),” 2018 Construction Law Section CLE, State Bar of Montana CLE Institute, Bozeman, Montana.

May 19, 2016 - “Defective Construction Litigation,” Cascade County Bar Association Meeting, Great Falls, Montana. 

October 9, 2015 - “Establishing the Standard of Care in the Wild West of Montana Using the Building Codes and Other Standards” (with Kellie G. Sironi), 2015 Construction Law Section CLE, State Bar of Montana CLE Institute, Bozeman, Montana.

June 13, 2014 - Facilitator, “New Lawyer’s Workshop,” State Bar of Montana CLE Institute, Helena, Montana. 

April 20, 2012 - “Anatomy of a Residential Construction Defect Case,” Spring Seminar, Montana Trial Lawyers Association, Great Falls, Montana.

Relevant Recognition and Affiliations

AV-Preeminent Rating, Martindale-Hubbell

Admitted to practice in Montana and California (inactive).

Admitted to U.S. District Court for Districts of Montana & Colorado

Admitted to U.S. Court of Appeals, Ninth Circuit and Federal Circuit

Admitted to U.S. Supreme Court


2007 - Present: Law Office of Glenn E. Tremper, PLLC, Great Falls, Montana.   

1993 - 2007: Church, Harris, Johnson & Williams, P.C., Great Falls, Montana.   

1992 - 1993: Pillsbury, Levinson & Mills, P.C., San Francisco, California.  

1989 - 1992: Steinhart & Falconer, P.C., San Francisco, California.   

1988 - 1989:  Church, Harris, Johnson & Williams, P.C.  

1987 - 1988: Law Clerk to Chief Judge James R. Browning, U.S. Court of Appeals for the Ninth Circuit, San Francisco, California. 


Glenn is a fourth-generation Montanan, born on May 1, 1962, in Missoula, Montana, as the youngest in a family of six children.  For the past 30 years, he has been married to Peggy O’Leary, a CPA, and they have two adult children.  Since 2001, he has served as an officer and director of Tremper Shopping Center, Inc., a family-owned neighborhood retail center in Missoula.  He has served, or currently serves, as chair of the Building Committee of Holy Spirit Catholic Parish, the Memorial Garden Committee and the Advisory Board to the Monastery of St. Clare in Great Falls.  He is a past president of Great Falls Habitat for Humanity, and served as a trustee of the State Bar of Montana Group Benefits Trust.  He is a member of the American Bar Association, Montana Bar Association, Cascade County Bar Association, American Association for Justice, and Montana Trial Lawyers Association.  Glenn enjoys travel, skiing, sailing, boating, hiking, and San Francisco Giants baseball. 

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Glenn E. Tremper, PLLC

This web site is designed for general information only. The information presented at this site should not be construed to be formal legal advice nor the formation of a lawyer/client relationship. All services are provided by Glenn E. Tremper, PLLC, a Montana Professional Limited Liability Corporation.

(406) 761-9400

Glenn E. Tremper, PLLC
300 River Drive North, Suite 5
Great Falls, Montana 59403-2263

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