Shannon Armstrong
Markowitz Herbold Glade & Mehlhaf PC
3000 PacWest Center
1211 SW 5th Ave.

Shannon Armstrong


    Shannon Armstrong is a trial lawyer concentrating on resolving complex business disputes. Shannon approaches litigation with a keen understanding of her client's business goals and applies her formidable legal, analytical, and interpersonal skills to successfully navigate legal disputes on behalf of her clients. She earns praise for her professionalism, responsiveness, and clear communication style in representing plaintiffs and defendants in commercial litigation.

    Shannon represents some of the firm’s most sophisticated clients in litigation ranging from breach of contract actions to commercial real estate disputes. She has experience in state and federal courts, arbitrations and mediations, and in all stages of the litigation process, including trial.

    Shannon has developed several unique niches within her practice. She has particular experience litigating disputes among shareholders in closely-held corporations, and has specific skill in early resolution of these challenging cases. Additionally, she has developed expertise in litigation involving continuing care retirement communities (CCRCs) and has represented residents of these communities in ground-breaking litigation.

    Prior to joining Markowitz Herbold, Shannon practiced complex litigation at a Portland law firm where she represented corporations and individuals in criminal and regulatory proceedings. Shannon effectively negotiated settlements on behalf of her clients, including difficult-to-achieve pre-indictment resolutions. She advocated for clients in cases involving a range of criminal allegations, including voting and election fraud, environmental offenses, mortgage fraud and Foreign Corrupt Practices Act violations.

    Shannon is a native Oregonian. She began her career as a law clerk for the Honorable Melvin Brunetti at the Ninth Circuit Court of Appeals in Reno, Nevada, then returned to Portland where she clerked for the Honorable Ancer L. Haggerty at the United States District Court for the District of Oregon.

    Experience and Affiliations

    • Rising Star, Oregon Super Lawyers magazine, 2013
    • Oregon State Bar, Legal Ethics Committee; Chair, 2014; Secretary, 2013; Member, 2010 to present
    • Federal Bar Association, Oregon Chapter; Chair, Haggerty Scholars Program Committee, 2013 to present; Chair, Membership Committee, 2013 to 2014; Board Member, 2013 to present
    • Multnomah Bar Association, CLE Committee; Co-Chair, 2014-2015; Member, 2012 - 2015
    • American Heart Association, Go Red for Women; Executive Leadership Team; Open Your Heart Committee
    • Member, National Continuing Care Residents Association
    • Member, Oregon Women Lawyers


    • University of California, Berkeley School of Law (Boalt Hall) — J.D., 2005
    • University of Oregon — B.A. with honors in political science, magna cum laude

    Admitted to Practice

    • Oregon
    • Washington
    • U.S. District Court, District of Oregon
    • Ninth Circuit Court of Appeals

    Legal Rights & Responsibilities in California Continuing Care Retirement Communities

    March 21, 2013
    McGeorge School of Law, Sacramento, CA
    MHGM Attorney Shannon Armstrong is a featured speaker at this day-long conference and will discuss the firm's recent case Rogue Valley Manor v. Pacific Retirement Services.