| Diversified Utility Services INC | Construction | $10,000,000 | $10,121,095 | 426 | $132.0M |  Research |
| H.f. Cox Inc. | Transportation and Warehousing | $7,988,000 | $8,092,610 | 324 | $86.5M | Research |
| Golden Empire Mortgage, Inc. | Finance and Insurance | $6,415,482 | $6,541,682 | 489 | $251.2M | Research |
| E&b Natural Resources Management Corporation | Mining, Quarrying, and Oil and Gas Extraction | $5,527,940 | $5,591,511 | 296 | $18.0M | Research |
| Hall Ambulance Service INC | Health Care and Social Assistance | $5,458,200 | $5,524,305 | 458 | $106.1M | Research |
| Heart Hospital of Bk, LLC | Health Care and Social Assistance | $5,326,380 | $5,385,773 | 417 | $82.7M | Research |
| A-C Electric Company | Construction | $5,193,000 | $5,245,499 | 341 | $112.2M | Research |
| Innovative Engineering Systems, Inc. | Professional, Scientific, and Technical Services | $3,910,167 | $3,955,677 | 227 | $28.0M | Research |
| Braun Electric Company, Inc. | Construction | $3,796,967 | $3,882,269 | 357 | $117.5M | Research |
| Sturgeon & Son Grading & Paving, Inc. | Construction | $3,766,928 | $3,806,558 | 314 | $97.3M | Research |
| Motor City Sales & Service | Retail Trade | $3,690,763 | $3,740,076 | 226 | $57.0M | Research |
| Mp Environmental Services, Inc. | Transportation and Warehousing | $3,613,000 | $3,654,997 | 226 | $51.5M | Research |
| Haberfelde Ford | Retail Trade | $3,451,800 | $3,492,087 | 288 | $72.6M | Research |
| Robert Heely Construction, LP | Construction | $3,378,900 | $3,418,614 | 318 | $98.6M | Research |
| Grant Construction, Inc. | Construction | $3,297,700 | $2,846,389 | 267 | $81.1M | Research |
| Kern Oil & Refining Co. | Manufacturing | $3,244,900 | $3,281,794 | 154 | $152.7M | Research |
| Rlh Fire Protection, INC | Construction | $3,198,745 | $3,234,501 | 234 | $79.7M | Research |
| Centric Health | Health Care and Social Assistance | $3,157,000 | $3,212,269 | 326 | $102.3M | Research |
| Kirschenman Enterprises Sales LP | Professional, Scientific, and Technical Services | $3,125,595 | $3,159,677 | 500 | $51.8M | Research |
| Excalibur Well Services | Mining, Quarrying, and Oil and Gas Extraction | $3,104,200 | $3,144,342 | 157 | $9.5M | Research |
| Mmi Services Inc. | Mining, Quarrying, and Oil and Gas Extraction | $2,989,575 | $3,023,789 | 122 | $7.4M | Research |
| Buttonwillow Warehouse Company INC | Wholesale Trade | $2,858,820 | $2,890,541 | 214 | $55.1M | Research |
| Valley Ag, Inc. | Agriculture, Forestry, Fishing and Hunting | $2,825,168 | $2,851,330 | 490 | $24.6M | Research |
| Townsend Industries, INC | Manufacturing | $2,806,432 | $2,837,225 | 287 | $80.1M | Research |
| San Joaquin Refining Co., INC | Manufacturing | $2,798,920 | $2,835,344 | 142 | $140.8M | Research |