Day Pitney Boston Partner Ann Hetherwick Cahill Elected as an ACTEC Fellow

Day Pitney LLP is proud to announce that Boston Partner Ann Hetherwick “Hether” Cahill has been elected as a Fellow of The American College of Trust and Estate Counsel (ACTEC), one of the most prestigious honors in the trusts and estates field. With Cahill’s election, the firm now counts 16 attorneys among this distinguished group, recognized for their exceptional service, scholarship, and commitment to the profession. Her election was confirmed at the 2025 ACTEC Fall Meeting by the Board of Regents.

ACTEC is a national, nonprofit association of approximately 2,400 lawyers and law professors from throughout the United States and abroad. ACTEC members (Fellows) are peer-elected on the basis of professional reputation and expertise in the preparation of wills and trusts, estate planning, probate, trust administration, and related practice areas. The College’s mission includes the improvement and reform of probate, trust, and tax laws and procedures and professional practice standards. ACTEC frequently offers technical comments with regard to legislation and regulations, but does not take positions on matters of policy or political objectives. For more information on the organization, click here.

In her practice, Cahill represents beneficiaries and fiduciaries in a broad range of fiduciary, probate, and trust disputes. Her work spans probate, trust, equity, guardianship, and conservatorship litigation, and she also serves as trustee of private trusts and personal representative of estates. She advises clients at every stage of the process, often helping to resolve matters through mediation and avoid litigation when possible. Cahill’s experience includes trustee removal actions, will contests, trust modifications and terminations, accounting disputes, equity matters involving real estate, omitted spouse or child claims, declaratory judgment actions, and guardianship and conservatorship proceedings, including those involving financial exploitation or expanded authority for estate planning.

Recognized for her excellence across trusts and estates, family law, and private wealth disputes, Cahill has been featured in several leading legal rankings. Her honors include recognition in The Best Lawyers in America in 2026 for Family Law (click here for Best Lawyers in America methodology), the 2025 Chambers High Net Worth Guide Private Wealth Disputes in Massachusetts (click here for Chambers High Net Worth Guide methodology), Best Lawyers: Ones to Watch in 2024 and 2025 for Family Law and Litigation – Trusts and Estates (click here for Best Lawyers methodology), and consistent recognition on the Massachusetts Super Lawyers® list from 2020 to 2025 for Estate and Trust Litigation (click here for Super Lawyers methodology).

Cahill earned her B.A. from Skidmore College and her J.D. from Suffolk University Law School. She is admitted to practice in Massachusetts.

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