| 1 | INSULET CORP | €2.7B | -- | 75 | -- |
| 2 | mrcc solutions | €85.8M | 750 | 60 | C+ |
| 3 | Conformis - acquired by restor3d | €85.6M | 350 | 60 | C+ |
| 4 | NESSARA | €69.4M | 350 | 60 | C+ |
| 5 | Entegris | POCO Materials EDM Technical Support | €66.5M | 350 | 60 | C+ |
| 6 | Tenneo | €59.6M | 350 | 60 | C+ |
| 7 | Globe Life American Income Division: Fisher Organization | €45.9M | 125 | 60 | C+ |
| 8 | Shawsheen Valley Regional Vocational Technical School | €40.1M | 350 | 60 | C+ |
| 9 | Billerica Memorial High School | €40.1M | 350 | 60 | C+ |
| 10 | Epoxy Technology | €36.2M | 125 | 60 | C+ |
| 11 | Siegel Egg Co., LLC | €30.8M | 125 | 60 | C+ |
| 12 | ColdSnap® | €30.8M | 125 | 60 | C+ |
| 13 | BELMONT INSTRUMENT CORP | €30.6M | 125 | 60 | C+ |
| 14 | bruker chemical analysis b.v. | €28.2M | 125 | 60 | C+ |
| 15 | LookLoveSend, LLC | €27.4M | 125 | 60 | C+ |
| 16 | CR Machine Co., Inc. | €25.0M | 125 | 60 | C+ |
| 17 | Axsun Technologies, An Excelitas Brand | €23.7M | 125 | 60 | C+ |
| 18 | McCracken | €21.3M | 125 | 60 | C+ |
| 19 | SSG Pools & Spas, Inc. | €18.9M | 125 | 60 | C+ |
| 20 | Massachusetts Soil Beneficial Reuse Coalition | €18.9M | 125 | 60 | C+ |
| 21 | Cooperative Reserve Supply Inc | €17.8M | 30 | 60 | C+ |
| 22 | Aerodyne Research | €13.0M | 125 | 60 | C+ |
| 23 | Centium Consulting | €11.8M | 125 | 60 | C+ |
| 24 | Harvest Automation Inc. | €10.8M | 30 | 60 | C+ |
| 25 | Swagelok Cambridge | €10.8M | 30 | 60 | C+ |
| 26 | REAS TRANSPORTATION | €8.2M | 30 | 50 | C |
| 27 | EMERALD GREEN BUILDING SERVICES | €7.8M | 125 | 50 | C |
| 28 | USI - Ultra Services Inc. | €7.8M | 125 | 50 | C |
| 29 | Medford Wellington Service Company, Inc. | €7.8M | 125 | 50 | C |
| 30 | oconnor true value hardware and rental | €7.8M | 30 | 50 | C |
| 31 | Johnson O’hare | €7.4M | 30 | 50 | C |
| 32 | AST Products, Inc. | €7.3M | 30 | 50 | C |
| 33 | Access Vascular, Inc. | €7.3M | 30 | 50 | C |
| 34 | HydroCision Inc. | €7.3M | 30 | 50 | C |
| 35 | OmniGuide | €7.3M | 30 | 50 | C |
| 36 | RIKON Power Tools | €7.0M | 30 | 50 | C |
| 37 | Billerica Bionics Team 4909 | €6.6M | 30 | 50 | C |
| 38 | Edge Precision Manufacturing | €6.6M | 30 | 50 | C |
| 39 | Opal Inc | €6.3M | 30 | 50 | C |
| 40 | Boston Materials | €6.0M | 30 | 50 | C |
| 41 | TevTech, LLC | €6.0M | 30 | 50 | C |
| 42 | MARSHALLS AUTOBODY CARSTAR, INC. | €5.9M | 30 | 50 | C |
| 43 | General Motors North America, Inc. | €5.9M | 30 | 50 | C |
| 44 | NOONAN & MCDOWELL, INC. | €5.9M | 30 | 50 | C |
| 45 | ATE Systems | €5.7M | 30 | 50 | C |
| 46 | Accusemble Electronics, Inc. | €5.7M | 30 | 50 | C |
| 47 | Hayes Instrument Service | €5.7M | 30 | 50 | C |
| 48 | InterSense Inc | €5.7M | 30 | 50 | C |
| 49 | Power Conversion Consulting | €5.7M | 30 | 50 | C |
| 50 | Mystic Motor Transportation Co., Inc. | €5.4M | 30 | 50 | C |
| 51 | Guaranteed Delivery Inc | €5.4M | 30 | 50 | C |
| 52 | Titan Averstar Group | €5.1M | 30 | 50 | C |
| 53 | Brian Looney | €5.1M | 30 | 50 | C |
| 54 | OasisWorks, Inc. | €5.1M | 30 | 50 | C |
| 55 | Blue Square Counseling | €5.0M | 30 | 50 | C |
| 56 | sheboom fitness | €5.0M | 30 | 50 | C |
| 57 | Hampton Inn Bedford / Burlington | €4.9M | 30 | 50 | C |
| 58 | Electrifying Sounds | €4.9M | 30 | 50 | C |
| 59 | charles r. todd contractors inc | €4.5M | 30 | 50 | C |
| 60 | sns morey | €4.5M | 30 | 50 | C |
| 61 | triple m contracting | €4.5M | 30 | 50 | C |
| 62 | Jc Floors | €4.5M | 30 | 50 | C |
| 63 | Boston Unique Indoor Comfort | €3.9M | 30 | 50 | C |
| 64 | PolyJoule, Inc. | €3.8M | 30 | 50 | C |
| 65 | bco inc. | €3.8M | 30 | 50 | C |
| 66 | american science & engineeri | €3.7M | 350 | 50 | C |
| 67 | Resonance Research | €3.1M | 30 | 50 | C |
| 68 | Vivisource Laboratories Inc | €3.1M | 30 | 50 | C |
| 69 | sc supercon srl | €3.1M | 30 | 50 | C |
| 70 | Wholesale Gutter & Supply | €3.0M | 5 | 50 | C |
| 71 | airfreight specials inc | €2.9M | 30 | 50 | C |
| 72 | Xcelero | €2.8M | 30 | 50 | C |
| 73 | Webcontentor - Web Development Services | €2.8M | 30 | 50 | C |
| 74 | Vhigna Corporate | €2.8M | 30 | 50 | C |
| 75 | colleen sgroi folk art | €2.8M | 30 | 50 | C |
| 76 | pawsitive thoughts | €2.8M | 30 | 50 | C |
| 77 | 335 motor sales | €2.8M | 30 | 50 | C |
| 78 | Wilevco LLC | €2.5M | 5 | 50 | C |
| 79 | Nutcracker Brands Inc | €2.5M | 5 | 50 | C |
| 80 | workplace essentials eco-friendly hygiene services | €2.3M | 125 | 50 | C |
| 81 | citron hygiene us | €2.3M | 125 | 50 | C |
| 82 | fusion technology group, inc. | €2.1M | 30 | 50 | C |
| 83 | sup consulting | €2.1M | 30 | 50 | C |
| 84 | harte-hanks data techologies, inc. | €2.1M | 30 | 50 | C |
| 85 | fusion technology group | €2.1M | 30 | 50 | C |
| 86 | Billerica Winwater Works | €2.1M | 5 | 50 | C |
| 87 | Sherbourn Technologies Inc | €2.0M | 5 | 50 | C |
| 88 | Harmon's Heavenly Honey | €2.0M | 5 | 50 | C |
| 89 | era key realty service billerica | €2.0M | 30 | 50 | C |
| 90 | middlesex crossing | €2.0M | 30 | 50 | C |
| 91 | Ruping Builders Inc | €2.0M | 5 | 50 | C |
| 92 | Giardina Construction | €2.0M | 5 | 50 | C |
| 93 | One Call Facility Services | €1.9M | 30 | 50 | C |
| 94 | Samson Brothers | €1.8M | 5 | 50 | C |
| 95 | The Part-Time Benefits Company & National Health & Wellness LLC | €1.8M | 5 | 50 | C |
| 96 | Billerica Crossings | €1.6M | 30 | 50 | C |
| 97 | Telepharmacy Solutions Inc | €1.6M | 30 | 50 | C |
| 98 | Mobile Medical Radiography | €1.6M | 30 | 50 | C |
| 99 | neighborhood diabetes | €1.6M | 125 | 50 | C |
| 100 | automotive technology & transmission llc | €1.5M | 5 | 50 | C |