| Rjn Group, INC Employee Stock Ownership Pla | Professional, Scientific, and Technical Services | $3,330,770 | $3,369,074 | 176 | $21.7M |  Research |
| Per SE Group, Inc. | Administrative and Support and Waste Management | $2,811,600 | $2,846,120 | 159 | $25.0M | Research |
| Wheaton Eye Clinic, Ltd. | Health Care and Social Assistance | $2,722,500 | $2,752,590 | 211 | $49.4M | Research |
| Wheaton Eye Clinic Ltd. | Health Care and Social Assistance | $2,000,000 | $2,010,671 | 236 | $74.1M | Research |
| American Cable & Telephone LLC | Construction | $2,000,000 | $2,028,778 | 110 | $36.2M | Research |
| Good News Publishers | Information | $1,532,947 | $0 | 116 | $19.5M | Research |
| St Francis High School | Educational Services | $1,392,635 | $1,404,356 | 133 | N/A | Research |
| Huck Bouma P.c. | Professional, Scientific, and Technical Services | $1,386,300 | $1,394,310 | 94 | $22.8M | Research |
| Plant Services Group INC | Other Services (except Public Administration) | $1,304,600 | $1,311,993 | 56 | $12.0M | Research |
| Plant Services Group, Inc. | Administrative and Support and Waste Management | $1,220,600 | $1,319,748 | 29 | <$5M | Research |
| Meier Clinics Foundation | Retail Trade | $1,137,400 | $1,146,152 | 130 | N/A | Research |
| Caldwell Plumbing Co INC | Construction | $1,081,468 | $1,091,021 | 65 | $20.6M | Research |
| Rolling in the Dough, INC | Accommodation and Food Services | $948,600 | $961,647 | 138 | $24.5M | Research |
| Caldwell Plumbing Co Inc. | Construction | $907,722 | $917,581 | 18 | $5.7M | Research |
| Staffing Technical Services INC | Administrative and Support and Waste Management | $900,000 | $909,750 | 30 | <$5M | Research |
| College Church in Wheaton | Other Services (except Public Administration) | $826,800 | $0 | 118 | N/A | Research |
| Wheaton-Oaks Sport Center Inc. | Arts, Entertainment, and Recreation | $813,973 | $818,721 | 81 | $11.3M | Research |
| Wheaton Oaks Sport Center, Inc. | Arts, Entertainment, and Recreation | $813,900 | $822,378 | 81 | $11.3M | Research |
| Wheaton Village Nursing & Rehabilitation Center LLC | Health Care and Social Assistance | $785,800 | $793,981 | 103 | $17.5M | Research |
| Lj Paving INC | Construction | $772,865 | $779,284 | 27 | $9.2M | Research |
| Bartlett Learning Center | Educational Services | $766,700 | $771,322 | 132 | $15.8M | Research |
| Jdf Services, Inc. | Health Care and Social Assistance | $703,225 | $707,522 | 136 | $23.3M | Research |
| Collaborative Marketing Group, Inc. | Professional, Scientific, and Technical Services | $695,242 | $699,463 | 34 | <$5M | Research |
| Bng Cargo Inc. | Unknown | $666,570 | $0 | 50 | N/A | Research |
| St. Michael Parish | Other Services (except Public Administration) | $647,505 | $653,081 | 75 | N/A | Research |