Professional Biography

David S. Matheson Partner

  • Portland

    D +1.503.727.2008

    F +1.503.346.2008


    1120 NW Couch Street, 10th Floor

    Portland, OR 97209-4128




David is a corporate attorney who brings value to clients by providing strategic and practical advice and helping them understand legal risks in light of business objectives and decisions. David combines a focus on exceptional client service with strong business acumen, excellent analytical skills, and broad international and domestic experience. He regularly advises clients on complex strategic transactions, best corporate governance practices, raising capital through public and private equity and debt offerings, recapitalizing and acquiring and disposing of businesses and assets, establishing joint ventures, and general corporate matters.

As a trusted advisor to both domestic and foreign public companies, David provides guidance on U.S. Securities and Exchange Commission (SEC), New York Stock Exchange (NYSE), and Nasdaq compliance issues and on his clients' most sensitive disclosure and reporting obligations. Boards of directors, board committees, and senior management engage David to assist them in fulfilling their fiduciary duties, both generally and in change of control and conflict of interest situations.

Legal ranking services recognize David as a leading attorney in corporate, capital markets, securities, and M&A matters. Chambers USA has described David as “renowned for his experience and knowledge of capital markets and public companies.” Clients quoted in the Chambers guide characterize David as “an excellent adviser to the board and to management,” with “his greatest strength [being] an ability to navigate thorny issues.” Others highlight his “careful, detailed and smart” approach and his ability to “get to the heart of a matter efficiently.”

chambers 2021 and best lawyers 2021 award badges

Ranked by Chambers & Best Lawyers

Named “Lawyer of the Year” by The Best Lawyers USA, 2020
Ranked by Chambers USA 17 years in a row

Professional Recognition

  • Named the Best Lawyers “Securities Regulation Law Portland Lawyer of the Year,” 2016, 2019; “Corporate Law Portland Lawyer of the Year,” 2018; "Securities/Capital Markets Law Portland Lawyer of the Year," 2020
  • Listed in Best Lawyers in America 2012 - 2022: Corporate Law; Mergers and Acquisitions Law; Securities / Capital Markets Law; Securities Regulation
  • Ranked by Chambers USA, as “America’s Leading Business Lawyers," 2005 - 2020
  • Listed in Oregon Law & Politics, "Oregon Super Lawyers," 2006 - 2021
  • Listed in Legal 500 United States, "Mergers, Acquisitions and Buyouts," 2008 - 2009
  • Peer Review Rated AV in Martindale-Hubbell

    (AV®, BV® and CV® are registered certification marks of Reed Elsevier Properties Inc., used in accordance with the Martindale-Hubbell certification procedures, standards and policies.)

Professional Leadership

  • Oregon State Bar Association, Executive Committee of Corporate Counsel Section, 2018 – present; Treasurer, 2020
  • Oregon State Bar Association, Executive Committee of Business Law Section, 2012 – 2016; Chair, 2015
  • Oregon State Bar Association, Executive Committee of Securities Regulation Section, 2005 – 2011; Chair, 2010
  • Oregon Entrepreneurs Network, Board of Directors, 2005 – 2006.

Related Employment

  • Shearman & Sterling LLP, Los Angeles, CA, Associate, 1991 - 1995






Bar and Court Admissions

  • Oregon


  • UCLA School of Law, J.D., 1991, Executive Editor, Federal Communications Law Journal
  • University of California, Los Angeles, M.B.A., 1991
  • Stanford University, A.B., with distinction, 1987


  • Spanish