| 1 | Cintas Corporation | €1.6B | -- | 80 | A |
| 2 | Reliance Medical Products, Inc. | €95.8M | 125 | 60 | C+ |
| 3 | steelox systems inc. | €77.3M | 350 | 60 | C+ |
| 4 | Ashley Ward, Inc | €76.6M | 350 | 60 | C+ |
| 5 | Medical Coaches / Armor Mobile Systems | €76.6M | 350 | 60 | C+ |
| 6 | Benchmark Gensuite® | €59.6M | 350 | 60 | C+ |
| 7 | APEX INDUSTRIAL TECHNOLOGIES L | €59.6M | 350 | 60 | C+ |
| 8 | Sibcy House | €58.4M | 350 | 60 | C+ |
| 9 | Natorp's | €51.0M | 125 | 60 | C+ |
| 10 | D&G Equipment Inc. | €51.0M | 125 | 60 | C+ |
| 11 | FORTE, a Swisslog Company | €51.0M | 125 | 60 | C+ |
| 12 | Force-4 A Division of Stress Engineering | €43.9M | 350 | 60 | C+ |
| 13 | Mason Schools | €40.1M | 350 | 60 | C+ |
| 14 | Apex Supply Chain Technologies, LLC | €31.1M | 350 | 60 | C+ |
| 15 | Rhinestahl Advanced Manufacturing Group | €29.2M | 125 | 60 | C+ |
| 16 | Crane Fencing Solutions, Ltd. | €28.6M | 125 | 60 | C+ |
| 17 | cincinnati fan & ventilator co., inc. | €28.2M | 125 | 60 | C+ |
| 18 | SNAAC | €26.3M | 125 | 60 | C+ |
| 19 | BFR SYSTEMS Inc. | €25.0M | 125 | 60 | C+ |
| 20 | benchmark digital partners llc | €24.7M | 350 | 60 | C+ |
| 21 | global consolidated holdings, inc. | €23.8M | 125 | 60 | C+ |
| 22 | providence extension ministries inc | €23.8M | 125 | 60 | C+ |
| 23 | Spherical Insights LLP | €23.1M | 125 | 60 | C+ |
| 24 | Cintas LEAD | €21.8M | 350 | 60 | C+ |
| 25 | suburban pediatric associates | €20.9M | 125 | 60 | C+ |
| 26 | mason healthcare | €20.9M | 125 | 60 | C+ |
| 27 | Dwarpaal | €20.7M | 125 | 60 | C+ |
| 28 | INGHAM ISD | €19.2M | 350 | 60 | C+ |
| 29 | Cedar Village Retirement Community | €18.9M | 350 | 60 | C+ |
| 30 | geocentral/c.m. paula company | €17.0M | 125 | 60 | C+ |
| 31 | Boars Head Provision Company | €15.3M | 30 | 60 | C+ |
| 32 | MASON NUWAY, INC. | €13.8M | -- | 60 | C+ |
| 33 | neighborhood mortgage company | €12.4M | 30 | 60 | C+ |
| 34 | megan heher | €12.4M | 30 | 60 | C+ |
| 35 | becoming mom pregnancy spa and imaging center | €12.4M | 30 | 60 | C+ |
| 36 | Efficiency Production Inc | €12.2M | 30 | 60 | C+ |
| 37 | BAYSORE'S FLOWER SHOP, L.L.C. | €12.2M | 30 | 60 | C+ |
| 38 | Natorp’s Nursery Outlet | €12.2M | 30 | 60 | C+ |
| 39 | Nirvana Organics ( Nature's Paradise ) | €12.2M | 30 | 60 | C+ |
| 40 | 22/123 Inc. | €12.2M | 30 | 60 | C+ |
| 41 | Crestview Tack Shop | €12.2M | 30 | 60 | C+ |
| 42 | Lense Crafters | €12.2M | 30 | 60 | C+ |
| 43 | Kitsmiller Rv Inc | €12.2M | 30 | 60 | C+ |
| 44 | Direct Expediting | €12.2M | 30 | 60 | C+ |
| 45 | jansen’s sweet sinsations | €12.2M | 30 | 60 | C+ |
| 46 | Think360.ai | €11.8M | 125 | 60 | C+ |
| 47 | United Wisconsin Group | €11.0M | 30 | 60 | C+ |
| 48 | Isaacs Fluid Power Equipment Company | €10.8M | 30 | 60 | C+ |
| 49 | VTechinfoInc | €10.7M | 125 | 60 | C+ |
| 50 | GNR | €9.4M | 30 | 50 | C |
| 51 | sreepad | €8.8M | 125 | 50 | C |
| 52 | Americhem Sales Company | €8.7M | 30 | 50 | C |
| 53 | Keller Williams Pinnacle Group Realty- Cincinnati, OH | €8.2M | 125 | 50 | C |
| 54 | Fairborn Services | €7.8M | 125 | 50 | C |
| 55 | Engage2Elevate | €7.6M | 350 | 50 | C |
| 56 | abnamro mortgage group | €7.5M | 125 | 50 | C |
| 57 | Frutta Bowls - Mason OH | €7.4M | 30 | 50 | C |
| 58 | Wild Flower Cafe | €7.4M | 30 | 50 | C |
| 59 | Legacy Ortho, Arthrex Distributor | €7.3M | 30 | 50 | C |
| 60 | Genetesis | €7.3M | 30 | 50 | C |
| 61 | Navetta Design | €7.2M | 30 | 50 | C |
| 62 | RPMI Packaging, Inc. | €7.0M | 30 | 50 | C |
| 63 | MASON ISD | €6.9M | 125 | 50 | C |
| 64 | accutex edm- a division of absolute machine tools, inc. | €6.8M | 30 | 50 | C |
| 65 | BrightStar Senior Living of Mason | €6.7M | 125 | 50 | C |
| 66 | Mason Assisted Living and Memory Care | €6.7M | 125 | 50 | C |
| 67 | ASSURERX HEALTH INC | €6.7M | 125 | 50 | C |
| 68 | Unicare Insurance Co | €6.7M | 125 | 50 | C |
| 69 | old glory guns & ammo llc | €6.6M | 30 | 50 | C |
| 70 | virtual firearm tactics | €6.6M | 30 | 50 | C |
| 71 | erna sands | €6.6M | 30 | 50 | C |
| 72 | Dapple Baby | €6.6M | 30 | 50 | C |
| 73 | Sara Glove Company | €6.4M | 5 | 50 | C |
| 74 | Gym Nation LLC | €6.3M | 30 | 50 | C |
| 75 | Incentive Works Inc | €6.3M | 30 | 50 | C |
| 76 | JetStream Lending | €6.3M | 30 | 50 | C |
| 77 | TEC Engineering, Inc. | €6.0M | 30 | 50 | C |
| 78 | Link-age Solutions | €6.0M | 36 | 50 | C |
| 79 | GLOBAL SPECIALTY MACHINES LLC | €6.0M | 30 | 50 | C |
| 80 | DE INTERNATIONAL GROUP LLC | €6.0M | 30 | 50 | C |
| 81 | AR Filtrazioni Mist Collectors USA & UK | €6.0M | 30 | 50 | C |
| 82 | ice ‘n ez | €6.0M | 30 | 50 | C |
| 83 | adado auto sales | €6.0M | 30 | 50 | C |
| 84 | MASON AUTO BODY REPAIR INC. | €5.7M | 30 | 50 | C |
| 85 | ParkMaestro | €5.7M | 30 | 50 | C |
| 86 | Mason Dance Center, Inc | €5.6M | 30 | 50 | C |
| 87 | M&M American Inc | €5.4M | 30 | 50 | C |
| 88 | Brixx Wood Fired Pizza - Mason, OH | €5.1M | 125 | 50 | C |
| 89 | Seven Media Design | €5.1M | 30 | 50 | C |
| 90 | Loglevel LLC | €5.1M | 30 | 50 | C |
| 91 | Level 6 Cybersecurity | €5.1M | 30 | 50 | C |
| 92 | Castusoft | €5.1M | 30 | 50 | C |
| 93 | ELECTRONIC COMMERCE LINK, INC. | €5.1M | 30 | 50 | C |
| 94 | ATHENA, powered by iTSpeeX, LLC. The Voice of Manufacturing. | €5.1M | 30 | 50 | C |
| 95 | SSAB Hardtech Inc | €5.1M | 30 | 50 | C |
| 96 | Six Digma | €5.1M | 30 | 50 | C |
| 97 | SalesWon (a Flowolf Product) | €5.1M | 30 | 50 | C |
| 98 | american family chiropractic center, inc. | €5.0M | 30 | 50 | C |
| 99 | Run Jump N Play | €5.0M | 30 | 50 | C |
| 100 | becoming mom® spa + ultrasound | €5.0M | 30 | 50 | C |