Don Glendenning

Don M. Glendenning




Don Glendenning has extensive experience in a broad range of corporate and securities matters, representing numerous public and private companies, as well as many of the state's leading family offices.

  • He is listed in The Best Lawyers in America and in Chambers USA, which has referred to him as "brilliant and one of the most client-service oriented lawyers out there," and as “a superlative lawyer who can empathize not only with his client, but with other parties in the situation, and often crafts solutions that satisfy everyone.”
  • Significant recent transactions have included representation of Southern Union Company in its $10 billion acquisition by Energy Transfer, representation of the Linn Energy special committee in the $4 billion acquisition of Berry Petroleum, and representation of Tenet Healthcare and Conifer Health Solutions in partnering with Catholic Health Initiatives for Conifer's revenue cycle management services, impacting scores of hospitals throughout the United States.
  • Don also represents the family offices of many of the most prominent families in Texas in their investments, financings, operations and multi-generational planning.
  • In addition to being a former Co-Chair of the Corporate and Transactional Department, he is the Firm's Partner in Charge of Corporate Responsibility and Charitable Giving, Co-Chair of the Firm's Diversity and Inclusion Committee, and the former Manager Partner of the Dallas office, a role he filled for two decades.
  • Active in numerous civic and charitable organizations, he is a recipient of the Justinian Award from the Dallas Bar Association, which recognizes an attorney who has "actively demonstrated a long-standing dedication to volunteer service in the Dallas community," as well as of a number of honors for his service in his five core areas of civic focus: Human Rights, Social Justice and Community Enhancement; Public Health; Education; the Environment; and the Arts.

Representative Experience

  • Represent public and private companies in merger and acquisition transactions, including asset sales, stock sales, spin-offs and mergers
  • Represent investors and issuers in private equity, venture-stage and growth companies
  • Advise issuers and investors concerning corporate governance and securities law disclosure and filing requirements
  • Represent special committees and acquirers in going-private transactions
  • Represent issuers in domestic and European bond offerings and technology and manufacturing clients in international joint ventures in Asia and Latin America

Professional History

  • Associate (1979 – 1986) and Partner (1986 to present), Locke Lord LLP (and predecessor firms)
  • Firm's Partner in Charge of Corporate Responsibility and Charitable Giving
  • Former Managing Partner, Dallas
  • Former Co-Chair, Corporate and Transactional Department

Professional Affiliations and Recognitions

  • Recipient, 2011 Justinian Award from the Dallas Bar Association
  • Named, Best Lawyers in Dallas by D Magazine (2012-2015, 2018)
  • Named, The Best Lawyers in America, Corporate Law (2008-2020)
  • Named, 2015 BTI Client Service All-Star (Corporate) 
  • Listed, Chambers USA, America's Leading Lawyers for Business, Corporate Law, Mergers and Acquisitions Law
  • Named, Texas Super Lawyer in Texas Monthly Magazine
  • Listed, Who's Who in the World, Who's Who in America, and Who's Who in American Law
  • Member, Dallas, Texas and American Bar Associations and Dallas and Texas Bar Foundations

Community Leadership

Human Rights, Social Justice and Community Enhancement

  • Inaugural President, and current member of Advisory Board, Human Rights Initiative of North Texas
  • Former Director, Dallas Holocaust Museum
  • Former Chairman and current member of Advisory Board, Thanks-Giving Foundation
  • Former Director, Dallas Chamber of Commerce
  • Former Member, United Way Tocqueville Cabinet and current Member, Tocqueville Society
  • Major Donor, Human Rights Campaign

Public Health

  • Co-Chair of the successful $150 Million Campaign for the New Parkland Hospital
  • Former Director, the Parkland Foundation
  • Chair, Campaign for the UTSW Medical District


  • Director, the SMU Tower Center Board
  • Chair, The Forum of the Tower Center
  • Advisor, UTD McDermott Scholars Alumni Association
  • Advisory Board Member, KIPP DFW
  • Past President, Rice University DFW Alumni
  • Former Director, KERA

The Environment

  • President, Scenic Dallas and Scenic Texas
  • Director, The Trinity Park Conservancy
  • Director, Texas Trees Foundation
  • Co-Chair, Major Gifts Campaign, Dallas Zoological Society
  • Past Chairman, Dallas Zoological Society
  • Former Director, Arbor Day Foundation
  • Former Director, National Tree Trust

The Arts

  • Co-Chair, The Founders Circle, The Arts Community Alliance (“TACA”)
  • Director, The Dallas Theater Center
  • Advisor, National Center for Arts Research
  • Member, Dallas Opera Inner Circle
  • Former Director, SMU Meadows School of the Arts Executive Board
  • Former Director, TACA


Human Rights, Social Justice and Community Enhancement

  • Recipient, Dallas Holocaust Museum Hope for Humanity Award
  • Recipient, Anti-Defamation League of Dallas Schoenbrun Jurisprudence Award
  • Recipient, Human Rights Initiative of North Texas "Angel of Freedom" and "Distinguished Lifetime Service" Awards
  • Recipient, Legal Aid of Northwest Texas Pro Bono Award
  • Recipient, Dallas Bar Association Justinian Award


  • Honoree, SMU Meadows at the Meyerson

The Environment

  • Recipient, Dallas Zoological Society "Good Egg" Award

The Arts

  • Recipient, TACA Silver Cup
  • Recipient, with wife Carol, of the Juanita and Henry S. Miller, Jr. Founders Award of The Dallas Opera