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Jackson Hole Trust Company provides a full range of trust services to U.S. and multinational families.

For decades, its owners and executive team have served as trustees and as directors and officers of foreign and domestic corporations and managed real estate, businesses and other investments. Jackson Hole Trust Company thoroughly understands the needs of its clients and serves them with integrity, professionalism and confidentiality. Jackson Hole Trust Company develops strong, personal relationships with its clients, enabling them to delegate, with complete assurance, the highest levels of responsibility.

Company Brochure (view PDF)

Jackson Hole Trust Company

185 W. Broadway, Suite 101
P.O. Box 1150
Jackson, Wyoming 83001

New Business & Inquiries About Our Services

Aaron Sones


Cowboy and cowgirl meeting with their horses

Mr. David P. Dahl


Mr. Dahl is a Nevada-based management consultant and former litigation attorney with extensive experience in bank, securities, and commodities regulation. He was a general partner in the litigation department of a national law firm, where he represented businesses ranging from Fortune 100 companies and a nationally recognized securities broker, to start ups. Mr. Dahl earned his Juris Doctor from Stanford Law School, where he served as Articles Editor and Senior Editor of the Stanford Journal of International Law. Mr. Dahl also acted as an extern-clerk to The Honorable Joseph T. Sneed, United States Court of Appeals, Ninth Circuit. Mr. Dahl received his Bachelor of Arts magna cum laude, with Distinction in History, from the University of Rochester, where he was elected to Phi Beta Kappa.

Ms. Julie A. Gilbert


Ms. Gilbert is an attorney who has served as President of Jackson Hole Trust Company (“JHTC”) since 2011. Ms. Gilbert has extensive experience assisting international families in connection with their U.S. real estate and businesses, and has decades of experience in corporate organization, financial reporting, budgeting, tax issues and assisting clients with the establishment of new business entities. Ms. Gilbert earned her Juris Doctor from the University of California at Davis and received her Bachelor of Arts summa cum laude from University of California at Los Angeles, where she was elected to Phi Beta Kappa.

Mr. Thomas P. Laffey


Mr. Laffey is a Missouri based arbitrator with the American Arbitration Association and business consultant. He is licensed to practice law in Missouri (active) and California (inactive). He graduated from the University of Notre Dame with a BBA degree with a major in finance and then from Stanford Law School with a JD. He practiced law in Los Angeles and his practice included handling litigation on behalf of business clients including Fortune 500 companies and substantial business work for clients in the aircraft manufacturing and airline business for which he also served as a member of their Boards of Directors. In 2008 Mr. Laffey became General Counsel and Vice President of Enterprise Holdings, Inc which owns and operates the Enterprise, National and Alamo car rental brands. He was responsible for the worldwide legal affairs of the business and retired from the position as General Counsel and Senior Vice President in 2016.

Mr. Thomas N. Long


Mr. Long is the senior partner of Long Reimer Winegar Beppler LLP. He received his B.A. degree in economics with high honors from the University of Wyoming and his law degree from Harvard Law School. He is a fellow of the American College of Trust and Estate Counsel (ACTEC) and has been active in assisting with the revision of Wyoming’s trust and business entity laws. He was one of the primary draftsmen of the Wyoming Business Corporation Act of 1991 and the 2009 revisions, the Wyoming Close Corporation Act, and the Wyoming Management Stability Act. He also was a primary participant in the drafting of the 2010 revision of the Wyoming Limited Liability Company Act, the 1995 revision to the Wyoming Uniform Limited Partnership Act, and was the primary draftsman of the Wyoming Statutory Trust Act, which created a type of business trust entity within Wyoming in 1995. His practice focuses on trust, estate, tax, and business/corporate law.

Mr. Robert S. Mautner



Mr. Mautner is an attorney who has served as Vice President and BSA Compliance Officer of Jackson Hole Trust Company since 2011. Mr. Mautner has extensive experience in corporate and transactional law with emphasis on representing privately held business with regard to business formation, structuring and organization, capital raising, mergers and acquisitions, and contract negotiations. He has served as a member of the NASD Board of Arbitrators and is a FINRA-certified and approved Arbitrator. Mr. Mautner formerly served as in-house counsel and securities counsel for Fidelity National Financial, Inc. Mr. Mautner is licensed to practice law in California and Arizona. He earned his Juris Doctor from University of California at Davis and received his Bachelor of Arts summa cum laude from University of Southern California, where he was elected to Phi Beta Kappa and Phi Kappa Phi Honors Societies.

Dr. Aaron H. Sones


Dr. Sones founded Physicians Management Group in 1992 and served as its CEO until he sold it to a private equity firm in 2007. Starting with one employee and one client, the company grew to over 350 employees and over 500 clients. Dr. Sones received his M.D. from UCLA School of Medicine and B.A. from University of California Davis.

Mr. Harrison M.G. Sones


Harrison Sones serves as Vice President and Director of Business Development of Jackson Hole Trust Company. He received his Bachelor of Arts magna cum laude from the University of California at Santa Barbara and was honored as a Regents Scholar.

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