John III
The Brennan Group, Inc.
jack@brennangroup.org
617-305-4120
1 Walnut Street, 3rd Floor,, 3rd Floor, Boston, MA, 02108, 
Subjects: All Subjects
Links: Website, LinkedIn
1) BXP, Inc.
2) Cummings School of Veterinary Medicine at Tufts University
3) Depositors Insurance Fund
4) Mass Regional Rail, LLC
5) Massachusetts Charter Public School Association, Inc
6) MBTA Retirement Fund
7) The Hanover Insurance Group, Inc.
8) The Savings Bank Mutual Life Insurance Company
9) The Uniform Law Commission
10) Trustees of Boston College
11) UniBank For Savings
John A. Brennan, Jr., President and FounderAs an attorney and former Massachusetts Senior Legislator, Mr. Brennan, brings a wealth of policy experience, political insights, and personal relationships to TBG. On a daily basis, Mr. Brennan provides senior strategic advice and counsel to TBG clients, ranging from Fortune 50 corporations to non-profit hospitals and universities. Mr. Brennan specializes in legislative and regulatory affairs, business strategies, real estate zoning and development issues. Mr. Brennan has counseled regional, national, and international clients in such industries as health care, banking, insurance, high technology, and biotechnology. As President of The Brennan Group, Mr. Brennan has advised clients on such issues as city and state land use permits, mergers and acquisitions, and licensing before regulatory bodies. Mr. Brennan fosters and maintains his clients' relationships with government leaders, and serves as a client representative before regulatory agencies and public authorities.
Last Updated: February 03, 2026