David Siddall Partner Profile

David L. Siddall, JD, LL.M.


David Siddall is admitted to practice law in Arizona, Iowa and Texas, and has practiced for more than 25 years. As a founding partner of McQueen & Siddall, LLP, David uses his experience and skills to counsel families and business owners on estate planning, business compliance and succession planning, asset protection, probate & trust administration and other end-of-life decisions. He also uses his extensive corporate experience to provide “Outside” General Counsel services for small businesses that need a variety of continuing legal services without the need to hire multiple lawyers.

David grew up in the Midwest and has a strong work ethic. His drive for success started at the young age of 10 when he started a lawn mowing business, followed quickly by adding paper routes and other enterprises (including helping in the family business) which set the stage for completing his undergraduate and law degrees in 5 years (as opposed to the normal 7 or more years)—all the while working multiple part-time jobs to support his family. David’s work ethic, integrity, knowledge, experience and people skills have enabled him to rise quickly in the corporate legal ranks as a trusted legal advisor and counselor.

After spending 25 years as in-house legal counsel for large public companies, David retired from his Fortune 500 legal career to pursue his dream in the legal field of estate planning, Eldercare and Special Needs. He has gained the necessary education and skills by attending the University of Miami School of Law’s prestigious Heckerling Graduate Program in Estate Planning where he earned a Master of Laws in Estate Planning. While at Heckerling Program, David met his future law partner, Bill McQueen, and they decided to form a boutique law partnership focusing on the legacy needs of families, seniors and business owners.

David has had more than 25 years of corporate, governance, compliance and other business-related legal experience. He has served as a legal officer, chief governance officer, chief compliance officer and corporate secretary of two Fortune 500 energy companies. In those capacities, he was responsible for Securities and Exchange Commission, New York Stock Exchange, Sarbanes-Oxley, Dodd-Frank, whistleblower and many other regulatory compliance programs. He also had responsibility for overseeing the legal department, compliance, shareholder relations, human resources, equity administration, governance, antitrust, finance, exploration and production, intellectual property, litigation, regulatory and other matters. Mr. Siddall has advised members of boards of directors and members of the C-suite for over 20 years.


  • LL.M. in Estate Planning, University of Miami School of Law, Coral Gables, Florida, 2013
  • JD, University of Iowa College of Law, With Distinction, Iowa City, Iowa, 1987
  • BA in Business Administration, Graceland University, Magna Cum Laude, Lamoni, Iowa, 1985 


  • Arizona State Bar Association
  • American Bar Association
  • Iowa State Bar Association
  • American Corporate Counsel Association
  • Texas State Bar Association

Community Involvement (current and past) 

  • Court Appointed Special Advocate (CASA) for foster children in Maricopa County, Arizona
  • Board member and vice president of Houston Outreach Task, Inc. (a charitable community service organization)
  • Investment Committee Member, Community of Christ Church 
  • Volunteer, Volunteer Income Tax Assistance (“VITA”), Miami, Florida
  • Volunteer, Seasons Hospice, Miami, Florida 
  • Past Member of the Board of Directors, Houston Marathon Committee, Houston, Texas
  • Past Member of the Advisory Board for the University of Texas Center for Global Energy, International Arbitration and Environmental Law
  • Past Member of the Board of Directors of The Woodlands Bar Association, The Woodlands, Texas

Activities and Family

David enjoys running, cycling, hiking, traveling and spending time with family and friends, as well as being involved with church activities.  David is the youngest of seven children, married to Rachel Holley, has two great children (son and daughter) and their spouses and five wonderful grandchildren. 

David Siddall's Partner Profile


David L. Siddall, JD, LL.M.
15849 North 71st Street, Suite 120
Scottsdale, Arizona 85254
T: 480.999.0237  F: 866.287.1442

E-mail David L. Siddall


8.1David L. Siddall

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Florida Office:

100 2nd Ave S #200n
St. Petersburg, FL 33701
(727) 471-5868

Arizona Office:

15849 N 71st St #100
Scottsdale, AZ 85254
(480) 999-0237
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Legacy Protection Lawyers are licensed to practice in Arizona, Florida, Iowa, and Texas. | Legal Disclaimer