| C&s Lease Service, Lc | Mining, Quarrying, and Oil and Gas Extraction | $5,394,830 | $5,457,499 | 434 | $26.3M |  Research |
| Estis Compression LLC | Real Estate and Rental and Leasing | $2,884,341 | $2,917,671 | 129 | $58.3M | Research |
| C&s Lease Service Lc | Mining, Quarrying, and Oil and Gas Extraction | $2,000,000 | $2,014,247 | 217 | $13.2M | Research |
| Premier Pressure Pumping, LLC | Mining, Quarrying, and Oil and Gas Extraction | $1,549,220 | $1,147,342 | 68 | <$5M | Research |
| Pinnacle Frac Transport, LLC | Transportation and Warehousing | $1,482,962 | $1,492,354 | 252 | $38.1M | Research |
| Pro Flo Water Transfer, Inc. | Manufacturing | $1,104,850 | $1,112,461 | 58 | $15.2M | Research |
| Benchmark Industrial Services INC | Construction | $1,078,400 | $1,083,582 | 70 | $23.9M | Research |
| Benchmark Industrial Services, INC | Agriculture, Forestry, Fishing and Hunting | $1,078,200 | $1,085,478 | 85 | <$5M | Research |
| Maverick Well Service LLC | Mining, Quarrying, and Oil and Gas Extraction | $1,067,042 | $1,071,903 | 77 | <$5M | Research |
| Dialog Wireline Services, LLC | Mining, Quarrying, and Oil and Gas Extraction | $1,065,300 | $1,077,763 | 43 | <$5M | Research |
| Dialog Wireline Services LLC | Mining, Quarrying, and Oil and Gas Extraction | $980,000 | $986,202 | 28 | <$5M | Research |
| Mustang Gas Compression, LLC | Real Estate and Rental and Leasing | $971,271 | $975,965 | 50 | $22.6M | Research |
| Mustang Gas Compression, LLC | Manufacturing | $971,271 | $977,018 | 50 | $13.1M | Research |
| Axis Transport LLC | Finance and Insurance | $800,951 | $804,769 | 38 | $19.5M | Research |
| Merritt Preferred Components, Inc. | Manufacturing | $785,600 | $789,926 | 47 | $12.3M | Research |
| Axis Transport, LLC | Transportation and Warehousing | $732,900 | $737,860 | 41 | $9.3M | Research |
| Dtp Leasing, LLC | Manufacturing | $698,260 | $701,662 | 59 | $14.4M | Research |
| Woolley Tool, Inc. | Mining, Quarrying, and Oil and Gas Extraction | $691,300 | $696,021 | 41 | <$5M | Research |
| Woolley Tool Inc. | Mining, Quarrying, and Oil and Gas Extraction | $691,300 | $694,949 | 30 | <$5M | Research |
| P & W Sales, Inc. | Mining, Quarrying, and Oil and Gas Extraction | $682,500 | $687,296 | 36 | <$5M | Research |
| P & W Sales Inc. | Wholesale Trade | $682,500 | $687,789 | 36 | $11.0M | Research |
| Tim Ables Trucking Company, LLC | Transportation and Warehousing | $662,230 | $670,939 | 48 | $7.3M | Research |
| The E3 Company, LLC | Mining, Quarrying, and Oil and Gas Extraction | $655,500 | $630,743 | 41 | <$5M | Research |
| East Texas Salt Water Disposal Company | Mining, Quarrying, and Oil and Gas Extraction | $637,290 | $640,795 | 38 | <$5M | Research |
| East Texas Salt Water Disposal Company | Mining, Quarrying, and Oil and Gas Extraction | $634,712 | $640,903 | 38 | <$5M | Research |