Geoffrey M. Mason advises high net worth individuals and families on sophisticated estate planning and trust administration matters, helping clients develop and implement tax-efficient estate and gift planning strategies tailored to their personal, family and financial objectives. His clients include private equity principals, venture capital investors, corporate executives and entrepreneurs. Geoff’s practice focuses on designing and implementing wealth transfer structures that preserve and transfer family wealth efficiently across generations. In addition to traditional estate planning, he advises on trust administration and fiduciary matters, working closely with trustees and beneficiaries on investment, tax and trust governance issues. He also serves as trustee of numerous family trusts, giving him practical experience with the day-to-day administration and oversight of long-term fiduciary arrangements. Recognition Best Lawyers in America (2023-2027) Boston Magazine “Top Lawyers” (2021) Chambers High Net Worth (2021-2026) Publications and Presentations “Marital Estate Planning After Tax Reform,” co-presenter, Massachusetts Continuing Legal Education, Inc., July 2019 and July 2018 “2017 Tax Reform/Charitable Planning Update,” co-presenter, State Street Global Advisors Charitable Asset Management 2018 Gift Planning Conference, April 10, 2018 Education & Credentials New York University School of Law, JD (2005) cum laude, Robert McKay Scholar Colby College, BA (2000) with honors Admissions Massachusetts