Don brings extensive experience in corporate and securities matters, representing a diverse range of public and private companies in a variety of domestic and international transactions, including stock sales, asset sales, spin-offs, and mergers. He counsels investors and issuers in private equity, venture-stage, and growth companies, especially with respect to corporate governance and securities law disclosure and filing requirements. Don also represents the family offices of many of the most prominent families in Texas in their investments, financings, operations, and multi-generational planning.

Don is listed in The Best Lawyers in America® and 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.”

Don is active in numerous civic and charitable organizations and 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.” He has received numerous honors for his service in his core areas of civic focus: human rights; social justice and community enhancement; public health; education; the environment; and the arts.

• Represented Southern Union Company in its $10 billion acquisition by Energy Transfer.
• Represented the Linn Energy special committee in the $4 billion acquisition of Berry Petroleum.
• Advised 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 U.S.
• Acted as counsel in public spin-off transactions for Kronos Worldwide and Belo Corp.
• Oversaw multi-generational structurings for public and private enterprises.

• Thomson Reuters Stand-out Lawyer (2023-2024)
• Texas Lawyer, Texas Trailblazer (2020)
• Dallas Bar Association, Justinian Award (2011)
• Chambers USA, Corporate/M&A Law in Texas (2009-2025)
• The Best Lawyers in America®, Corporate (2008-2026) and Mergers and Acquisitions Law (2014-2020, 2022-2026)
• D Magazine, Best Lawyers in Dallas, Corporate Law (2012-2015, 2018, 2021, 2023-2024)
• BTI Client Service All-Star, Corporate Law (2015)
• Super Lawyers® Texas: Mergers & Acquisitions (2003-2007, 2009-2020)
• Dallas Holocaust Museum, Hope for Humanity Award
• Anti-Defamation League of Dallas, Schoenbrun Jurisprudence Award
• Human Rights Initiative of North Texas, “Angel of Freedom” and “Distinguished Lifetime Service” Awards
• Legal Aid of Northwest, Texas Pro Bono Award
• Dallas Bar Association, Justinian Award
• SMU Meadows at the Meyerson
• Dallas Zoological Society, “Good Egg” Award
• TACA Silver Cup
• The Dallas Opera, Juanita and Henry S. Miller, Jr. Founders Award