| $150,000–350,000 | METROPOLITAN TRUCK CENTER INC. | STOUGHTON, MA | Eastern Bank |
| $150,000–350,000 | METROWEST UROLOGIC ASSOCIATES P.C | NATICK, MA | Eastern Bank |
| $150,000–350,000 | MFRP CORPORATION | Salisbury, MA | Eastern Bank |
| $150,000–350,000 | MICHAEL ALBOR SALONS, INC. | Boston, MA | Eastern Bank |
| $150,000–350,000 | MICHAEL ALBOR SALONS, INC. | BOSTON, MA | Eastern Bank |
| $150,000–350,000 | MICHAEL ASSOCIATES, LTD. | QUINCY, MA | Eastern Bank |
| $2–5 million | MICHAEL J CONNOLLY & SON | Walpole, MA | Eastern Bank |
| $150,000–350,000 | MICHAEL J CONNOLLY & SONS, INC. | WALPOLE, MA | Eastern Bank |
| $1–2 million | MICHAEL VAN VALKENBURGH ASSOCIATES, INC. | Cambridge, MA | Eastern Bank |
| $150,000–350,000 | MICHAEL'S FUNCTION HALL INC. | Haverhill, MA | Eastern Bank |
| $150,000–350,000 | MICHAUD ROWE & RUSCAK INSURANCE AGENCY, INC. | NORTH ANDOVER, MA | Eastern Bank |
| $150,000–350,000 | MICHEL ASSOCIATES LTD | Quincy, MA | Eastern Bank |
| $150,000–350,000 | MICHEL LIRETTE, M.D., P.C. | NORTH ANDOVER, MA | Eastern Bank |
| $150,000–350,000 | MICHELS ANGELS CORPORATI | Chelmsford, MA | Eastern Bank |
| $150,000–350,000 | MICRO-LEADS, INC. | SOMERVILLE, MA | Eastern Bank |
| $150,000–350,000 | MICRO-PRECISION TECHNOLO | Salem, NH | Eastern Bank |
| $150,000–350,000 | MICRO-PRECISION TECHNOLOGIES, INC. | LAWRENCE, MA | Eastern Bank |
| $2–5 million | MICRODESK INC | Nashua, NH | Eastern Bank |
| $5–10 million | MICRODESK, INC | NASHUA, NH | Eastern Bank |
| $1–2 million | MICROWAVE ENGINEERING CO | North Andover, MA | Eastern Bank |
| $1–2 million | MICROWAVE ENGINEERING CORPORATION | NORTH ANDOVER, MA | Eastern Bank |
| $350,000–1 million | MILHARMER ASSOCIATES, INC. | RAYNHAM, MA | Eastern Bank |
| $350,000–1 million | MILLER DYER SPEARS INC. | Boston, MA | Eastern Bank |
| $350,000–1 million | MILLER DYER SPEARS, INC. | Boston, MA | Eastern Bank |
| $150,000–350,000 | MILLER ENGINEERING & TES | Manchester, NH | Eastern Bank |
| $350,000–1 million | MILLER ENGINEERING & TESTING, INC. | MANCHESTER, NH | Eastern Bank |
| $350,000–1 million | MINDSTREAM ANALYTICS, LLC | SAN FRANCISCO, CA | Eastern Bank |
| $150,000–350,000 | MINIMALLY INVASIVE SURGERY SURGERY CENTER OF NE, LLC | BEDFORD, NH | Eastern Bank |
| $150,000–350,000 | MINLI, INC. | QUINCY, MA | Eastern Bank |
| $350,000–1 million | MINUTEMAN VOLKSWAGEN INC | BEDFORD, MA | Eastern Bank |
| $150,000–350,000 | MIRACLE RESOURCE ALTERNATIVES CORPORATION | AUBURN, MA | Eastern Bank |
| $350,000–1 million | MISHAWUM ASSISTED LIVING ASSOCIATES, LLC | BRAINTREE, MA | Eastern Bank |
| $150,000–350,000 | MIYARES AND HARRINGTON LLP | Wellesley, MA | Eastern Bank |
| $150,000–350,000 | MJR MANAGEMENT INC | Boston, MA | Eastern Bank |
| $150,000–350,000 | MJR MANAGEMENT INC. | BOSTON, MA | Eastern Bank |
| $150,000–350,000 | MK3 CREATIVE LLC | Charlestown, MA | Eastern Bank |
| $150,000–350,000 | MK3 CREATIVE LLC | CHARLESTOWN, MA | Eastern Bank |
| $350,000–1 million | MODERN PASTRY INC | Boston, MA | Eastern Bank |
| $350,000–1 million | MODERN PASTRY, INC. | Boston, MA | Eastern Bank |
| $350,000–1 million | MODERN TESTING SERVICES | Norwood, MA | Eastern Bank |
| $350,000–1 million | MODERN TESTING SERVICES, LLC | NORWOOD, MA | Eastern Bank |
| $150,000–350,000 | MOKRO CORP. | DRACUT, MA | Eastern Bank |
| $150,000–350,000 | MONEY EXPERIENCE INC | Boston, MA | Eastern Bank |
| $150,000–350,000 | MONEY EXPERIENCE, INC. | CAMBRIDGE, MA | Eastern Bank |
| $150,000–350,000 | MONICA'S MERCATO INC. | Boston, MA | Eastern Bank |
| $150,000–350,000 | MONICA'S MERCATO, INC. | BOSTON, MA | Eastern Bank |
| $150,000–350,000 | MONICA'S TRATTORIA ON PRINCE INC | Boston, MA | Eastern Bank |
| $150,000–350,000 | MONICA'S TRATTORIA ON PRINCE, INC. | BOSTON, MA | Eastern Bank |
| $150,000–350,000 | MONICA'S, INC. | BOSTON, MA | Eastern Bank |
| $350,000–1 million | MONICAS INC | Boston, MA | Eastern Bank |
| $150,000–350,000 | MONKS MANUFACTURING CO., INC. | Wilmington, MA | Eastern Bank |
| $150,000–350,000 | MOONSHINE KITCHEN LLC | Boston, MA | Eastern Bank |
| $150,000–350,000 | MOONSHINE KITCHEN, LLC | SOUTH BOSTON, MA | Eastern Bank |
| $2–5 million | MORGAN MEMORIAL GOODWILL INDUSTRIES INC. | Boston, MA | Eastern Bank |
| $350,000–1 million | MORGAN, BROWN & JOY LLP | BOSTON, MA | Eastern Bank |
| $1–2 million | MORSE, BARNES-BROWN & PENDLETON, P.C. | Waltham, MA | Eastern Bank |
| $1–2 million | MORSECORP, INC. | CAMBRIDGE, MA | Eastern Bank |
| $350,000–1 million | MORTON DONUT INC | South Weymouth, MA | Eastern Bank |
| $350,000–1 million | MORTON DONUT INC. | SOUTH WEYMOUTH, MA | Eastern Bank |
| $150,000–350,000 | MOTHER ANNA'S INC. | Boston, MA | Eastern Bank |
| $150,000–350,000 | MOTHER ANNA'S, INC. | BOSTON, MA | Eastern Bank |
| $150,000–350,000 | MOTHER JUICE, INC. | Cambridge, MA | Eastern Bank |
| $150,000–350,000 | MOTHER JUICE, INC. | BOSTON, MA | Eastern Bank |
| $350,000–1 million | MOTHERS OUT FRONT, INC. | CAMBRIDGE, MA | Eastern Bank |
| $150,000–350,000 | MOTION ELEVATOR CORPORATION | DORCHESTER, MA | Eastern Bank |
| $150,000–350,000 | MOUNT PLEASANT HOME | JAMAICA PLAIN, MA | Eastern Bank |
| $150,000–350,000 | MOUNTAIN GAP SOLUTIONS | BOSTON, MA | Eastern Bank |
| $150,000–350,000 | MOUNTAIN VIEW DONUTS LLC | LINCOLN, MA | Eastern Bank |
| $1–2 million | MPK ENTERPRISES INC. | Watertown, MA | Eastern Bank |
| $1–2 million | MPK ENTERPRISES INC. | Woburn, MA | Eastern Bank |
| $150,000–350,000 | MPN PROPERTIES LLC | Boston, MA | Eastern Bank |
| $150,000–350,000 | MTA BENEFITS, INC. | QUINCY, MA | Eastern Bank |
| $150,000–350,000 | MTM INSURANCE ASSOCIATES LLC | NORTH ANDOVER, MA | Eastern Bank |
| $350,000–1 million | MULLINS WAY LLC | Boston, MA | Eastern Bank |
| $350,000–1 million | MULLINS WAY LLC | BOSTON, MA | Eastern Bank |
| $150,000–350,000 | MULTICULTURAL AIDS COALITION INC | ROXBURY, MA | Eastern Bank |
| $350,000–1 million | MURPHY HESSE TOOMEY & LE | Quincy, MA | Eastern Bank |
| $350,000–1 million | MURPHY HESSE TOOMEY & LEHANE LLP | QUINCY, MA | Eastern Bank |
| $150,000–350,000 | MURRAY MASONRY & MORE C | Peabody, MA | Eastern Bank |
| $150,000–350,000 | MURRAY MASONRY & MORE, CORPORATION | PEABODY, MA | Eastern Bank |
| $150,000–350,000 | MW&W INC | BOSTON, MA | Eastern Bank |
| $350,000–1 million | MW&W INC. | Boston, MA | Eastern Bank |
| $150,000–350,000 | MY LITTLE BEST FRIENDS EARLY LEARNING CENTER LLC | MALDEN, MA | Eastern Bank |
| $2–5 million | MYSTIC VALLEY ELDER SERVICES | MALDEN, MA | Eastern Bank |
| $150,000–350,000 | N L G ENTERPRISES, INC. | PEABODY, MA | Eastern Bank |
| $150,000–350,000 | NADEAU SENIOR CARE SERVICES LLC | Madbury, NH | Eastern Bank |
| $350,000–1 million | NAGEL, CUTRELL, WENDELL ADN ASSOC | FRAMINGHAM, MA | Eastern Bank |
| $1–2 million | NAI ENTERPRISES INC | WELLESLEY HILLS, MA | Eastern Bank |
| $150,000–350,000 | NANCY LANDRY PLLC | Somerville, MA | Eastern Bank |
| $150,000–350,000 | NANKIN DENTAL ASSOCIATES | Quincy, MA | Eastern Bank |
| $150,000–350,000 | NANKIN DENTAL ASSOCIATES | QUINCY, MA | Eastern Bank |
| $150,000–350,000 | NAPPY CRANE SERVICE INC | Groveland, MA | Eastern Bank |
| $150,000–350,000 | NAPPY CRANE SERVICE, INC. | GROVELAND, MA | Eastern Bank |
| $1–2 million | NARDONE ELECTRICAL CORPORATION | WOBURN, MA | Eastern Bank |
| $350,000–1 million | NASHUA CENTER | NASHUA, NH | Eastern Bank |
| $350,000–1 million | NASHUA CENTER FOR THE MU | Nashua, NH | Eastern Bank |
| $150,000–350,000 | NASHUA SOUP KITCHEN & SHELTER, INC. | NASHUA, NH | Eastern Bank |
| $150,000–350,000 | NATHANSON & GOLDBERG, A PROFESSIONAL CORPORATION | BOSTON, MA | Eastern Bank |
| $350,000–1 million | NATIONAL BRAIN TUMOR SOCIETY | Newton, MA | Eastern Bank |
| $350,000–1 million | NATIONAL BRAIN TUMOR SOCIETY, INC. | NEWTON, MA | Eastern Bank |