| Peter Baker & Son Co. | Manufacturing | $5,146,040 | $5,205,362 | 219 | $217.2M |  Research |
| Karl Knauz Motors, INC | Retail Trade | $4,457,010 | $4,514,642 | 293 | $73.8M | Research |
| Mariani Enterprises, INC | Professional, Scientific, and Technical Services | $3,532,000 | $4,245,972 | 470 | $94.7M | Research |
| Hn Precision Company | Manufacturing | $2,052,700 | $2,077,503 | 133 | $34.8M | Research |
| Scott Byron & Company Inc. | Professional, Scientific, and Technical Services | $1,992,900 | $2,011,224 | 112 | $22.6M | Research |
| Lindemann Chimney Service, Inc. | Wholesale Trade | $1,188,238 | $1,197,116 | 82 | $25.1M | Research |
| Lake Forest Pediatric Associates, Ltd | Health Care and Social Assistance | $1,130,100 | $1,137,948 | 75 | $23.5M | Research |
| Homewerks Worldwide LLC | Wholesale Trade | $1,113,000 | $1,121,050 | 100 | $30.6M | Research |
| Profile Plastics Inc. | Manufacturing | $1,042,400 | $1,049,581 | 81 | $80.3M | Research |
| Profile Plastics, Inc. | Manufacturing | $1,042,400 | $1,049,349 | 81 | $80.3M | Research |
| Altounian Construction, Inc. | Construction | $1,000,000 | $1,015,194 | 85 | $25.8M | Research |
| Lake Forest Pediatric Associates, Ltd. | Health Care and Social Assistance | $992,200 | $1,000,193 | 79 | $24.8M | Research |
| Mariani Nursery, INC | Retail Trade | $786,200 | $795,139 | 76 | $15.7M | Research |
| Sai Management Group LLC | Professional, Scientific, and Technical Services | $748,300 | $7,445 | 4 | <$5M | Research |
| Anesthesia Management Partners INC | Professional, Scientific, and Technical Services | $612,850 | $621,089 | 103 | $14.4M | Research |
| Watershed Development Corporation | Retail Trade | $579,251 | $582,845 | 64 | $19.6M | Research |
| Howe Security, Inc. | Administrative and Support and Waste Management | $515,152 | $521,048 | 84 | $12.3M | Research |
| Lake Forest Sports Cars Ltd | Retail Trade | $514,500 | $517,344 | 37 | $9.3M | Research |
| Claridge Operations, LLC | Health Care and Social Assistance | $497,854 | $409,386 | 76 | $13.0M | Research |
| American Metal Fibers, Inc. | Manufacturing | $496,338 | $501,604 | 24 | $5.9M | Research |
| Robert Kinnucan Tree Experts &landscaping Company, Inc. | Administrative and Support and Waste Management | $483,900 | $489,317 | 37 | $8.0M | Research |
| Howe Security Inc. | Administrative and Support and Waste Management | $420,764 | $424,598 | 75 | $11.0M | Research |
| Claridge Operations LLC | Health Care and Social Assistance | $393,658 | $398,797 | 74 | $12.6M | Research |
| Tarman Inc. | Accommodation and Food Services | $391,037 | $395,644 | 45 | $8.0M | Research |
| Imperial Motors, Inc. | Retail Trade | $385,590 | $390,334 | 23 | $5.8M | Research |