| MSL Electric, Inc. CA | Construction | 0 | — | D |
| MSM Group, Inc. OH | Professional & Technical Services | 0 | — | A |
| MSM Sheet Metal & Steel Fabrication, Inc NV | Manufacturing | 0 | — | F |
| MSM Solutions, Inc. IL | Construction | 0 | — | F |
| MSN Corp d/b/a Budd Foods NH | Manufacturing | 0 | — | A |
| MSN Enterprises MI | Retail Trade | 0 | — | F |
| MSN pharmaceutical Incorporated NJ | Manufacturing | 0 | — | A |
| MSN Pharmaceuticals inc., NJ | Manufacturing | 0 | — | B |
| MSO of Kings County, LLC NY | — | 0 | — | — |
| MSP Aviation Inc IN | Manufacturing | 0 | — | A |
| MSP Aviation Inc dba MSP Manufacturing IN | Manufacturing | 0 | — | A |
| MSP Enterprises, LLC dba Sea Glass Hospitality Partners CA | — | 0 | — | — |
| MSP Industries LLC FL | Manufacturing | 0 | — | B |
| MSP Plumbing and Heating MN | Construction | 0 | — | A |
| MSP Tax and Accounting IA | Professional & Technical Services | 0 | — | A |
| MSPCA-Angell MA | Other Services | 0 | — | F |
| MSQ Partners NA, LLC NY | Professional & Technical Services | 1 | $198,450 | — |
| MSQUARE SYSTEMS INC VA | Professional & Technical Services | 3 | $97,833 | — |
| MSQUARE TECHNOLOGIES INC PA | Professional & Technical Services | 2 | $123,209 | — |
| MSR TECHNOLOGY GROUP LLC CA | Professional & Technical Services | 11 | $100,069 | — |
| MSR TECHNOLOGY GROUP LLC DE | Professional & Technical Services | 96 | $100,875 | — |
| MSR TECHNOLOGY GROUP LLC. NJ | Professional & Technical Services | 1 | $151,840 | — |
| MSRCOSMOS LLC CA | Professional & Technical Services | 12 | $99,346 | — |
| MSRE Management, L.L.C., dba Martin Selig Real Estate WA | — | 0 | — | — |
| MSRS dba VM International CA | Manufacturing | 0 | — | F |
| MSS Energy Holdings LLC FL | Utilities | 1 | $184,500 | — |
| MSS Solutions NC | Construction | 0 | — | B |
| MSS STEEL TUBES USA TN | Manufacturing | 0 | — | A |
| MSSC KY | Manufacturing | 0 | — | F |
| MSSC US, Inc. KY | Manufacturing | 0 | — | A |
| MSSC, LLC IL | Manufacturing | 0 | — | A |
| MSSC, LLC MO | Manufacturing | 0 | — | A |
| MST Concrete Products SC | Manufacturing | 0 | — | F |
| MST Manufacturing OK | Manufacturing | 0 | — | A |
| MSU Health Care Laboratories MI | Healthcare & Social Assistance | 0 | — | F |
| MSW Glass, Inc. dba Skyline Glass, Inc. CO | Construction | 0 | — | F |
| MSW Inc. MO | Manufacturing | 0 | — | C |
| MSW LLC IN | Transportation & Warehousing | 0 | — | A |
| MSX International RNS LLC MI | Administrative & Waste Services | 1 | $83,158 | A |
| MSX International RNS, LLC CA | Professional & Technical Services | 0 | — | A |
| MSYS INC DC | Professional & Technical Services | 4 | $97,146 | — |
| MT & ASSOCIATES, LLC FL | Professional & Technical Services | 2 | $110,000 | — |
| MT & M Gaming INC; dba Last Frontier Casino WA | Arts & Entertainment | 0 | — | D |
| Mt Airy Gardens Rehabilitation and Care Center LLC OH | Healthcare & Social Assistance | 0 | — | D |
| Mt Baker Products WA | Manufacturing | 0 | — | F |
| MT Builders AZ | Construction | 0 | — | F |
| Mt Hamill Elevator and Lumber Inc. IA | Retail Trade | 0 | — | C |
| Mt Hood Corporations, Inc. OR | Other Services | 0 | — | F |
| Mt Hope Fence Co Ltd. OH | Retail Trade | 0 | — | A |
| MT Investments Inc NV | Administrative & Waste Services | 0 | — | A |
