Our Principals

Braintree Capital principals have a half century of combined experience in municipal bond sales, trading, finance, origination, credit analysis and management.

Arthur J. Wunder

Chief Investment Officer
(617) 342-8105

Artie Wunder began his career in the financial services industry in 1976.  During his 36 year career, he served in senior management positions in the municipal bond and fixed income divisions at Dillon Read, Tucker Anthony/RBC Dain Rauscher, and Advest/Merrill Lynch.

Artie co-founded Braintree Capital Partners and its private investment fund in 2008 and sold the registered investment advisor to a subsidiary of HJ Sims in 2011. He currently serves as the CIO of Braintree Capital and as an EVP at Sims.

A graduate of St. John’s University in New York, Artie holds Series 7, Series 63, Series 53 (Municipal Principal) and Series 24 (Securities Principal) licenses.

Gayl Mileszko

Chief Operating Officer
(617) 342-8105

Gayl Mileszko is the chief analyst at Braintree Capital Partners, the Boston-based municipal bond investment advisory firm which became a subsidiary of HJ Sims Capital Management Inc. in 2011. She previously served on the board of the Massachusetts Health and Educational Facilities Authority, as Secretary of the Massachusetts Department of Labor, and on the executive staff of former Massachusetts Governor Mitt Romney. Gayl was associated for twelve years with Tucker Anthony in its public finance banking and fixed income divisions, and served for five years in Washington as a member of the staff of the U.S. House Committee on Appropriations.

A co-founder of Braintree Capital Partners and its private investment fund, Gayl continues to serve as its chief operating officer. A member of the National Federation of Municipal Analysts and the Boston Municipal Analysts Forum, she holds a B.A. from Yale College in political science with an interdisciplinary concentration in international relations.

HJ Sims Locations

2150 Post Road, Suite 301
Fairfield, Connecticut 06824
Phone: (800) 457-1935
Fax: (203) 256-2377

2700 N. Military Trail, Suite 400
Boca Raton, FL 33431
Phone: (888) 457-1935
Fax: (561) 368-9401

100 Wood Avenue South, Suite 203
Iselin, New Jersey 08830
Phone: (800) 300-9040
Fax: (732) 590-0522

8500 Normandale Lake Blvd, Suite 540
Bloomington, MN 55437
Phone: (888) 803-3430
Fax: (952) 683-7543

48 Carr 165 Ste 215
Guaynabo, PR 00968-8032
Phone: (877) 418-5395
Fax: (939) 399-0160

11325 North Community House Road
Suite 170
Charlotte, NC 28277

Orlando, Florida
Phone: (407) 363-4493
Fax: (407) 363-2036

Austin, Texas
Phone: (512) 519-5000
Fax: (512) 519-5015

Rockville, Maryland
Phone: (301) 424-9135
Fax: (203) 418-9083

Philadelphia, Pennsylvania
Phone: (215) 854-6428
Fax: (626) 605-8573

Sims Mortgage Funding
Montvale, New Jersey
Phone: (201) 307-9383
Fax: (201) 307-9380

Talk to us today
Braintree Capital

175 Federal Street, 5th Floor
Boston, Massachusetts 02110-2211
Phone: (617) 342-8105