| Atlas Support, Inc. CA | Information & Media | 1 | $180,960 | - |
| Atlas Technical Consultants, LLC TX | Professional & Technical Services | 5 | $187,500 | - |
| Atlas United Corp AL | Construction | 9 | $45,000 | - |
| Atlas Venture Life Science Advisors, LLC MA | - | 1 | $285,000 | - |
| Atlas Vineyard Management, LLC OR | Agriculture & Forestry | 0 | - | A |
| Atlas Vineyard Managment, LLC CA | Agriculture & Forestry | 0 | - | D |
| Atlas Welding and Fabrication, DE | Construction | 0 | - | F |
| Atlasnova Inc. CA | - | 2 | $139,570 | - |
| Atlassian TX | Professional & Technical Services | 0 | - | A |
| Atlassian US, Inc. CA | Professional & Technical Services | 286 | $200,000 | - |
| Atlassian US, Inc. WA | - | 0 | - | - |
| Atlee Gleaton Eye Care ME | Healthcare & Social Assistance | 1 | $100,000 | - |
| Atlink Communications Inc TX | Professional & Technical Services | 1 | $80,330 | - |
| Atlm LLC NY | Arts & Entertainment | 1 | $70,000 | - |
| ATMANICA Technologies LLC TX | Professional & Technical Services | 5 | $107,250 | - |
| Atmecs Global INC. CA | Professional & Technical Services | 3 | $91,456 | - |
| Atmel Corporation CA | - | 0 | - | - |
| Atmo Biosciences Inc CA | Manufacturing | 2 | $124,446 | - |
| Atmos Energy CO | Utilities | 0 | - | F |
| Atmos Energy KS | Utilities | 0 | - | F |
| Atmos Energy KY | Utilities | 0 | - | F |
| Atmos Energy LA | Utilities | 0 | - | F |
| Atmos Energy TN | Utilities | 0 | - | F |
| Atmos Energy TX | Utilities | 0 | - | F |
| Atmosic Technologies, Inc. CA | Manufacturing | 1 | $157,680 | - |
| Atmosphere Design Group, LLC NY | Professional & Technical Services | 1 | $80,000 | - |
| AtmosZero, Inc. CO | Professional & Technical Services | 1 | $123,600 | - |
| Atmus Filtration Inc. TN | - | 15 | $115,232 | - |
| ATN Hoelzel LP TN | Professional & Technical Services | 1 | $85,000 | - |
| ATN International Telecom Group LLC MA | Information & Media | 1 | $125,091 | - |
| Atoco, Inc. CA | Professional & Technical Services | 1 | $76,586 | - |
| Atoka Technologies Inc TX | Professional & Technical Services | 6 | $131,100 | - |
| Atolye LLC TX | - | 1 | $68,000 | - |
| Atom Computing, Inc. CA | Professional & Technical Services | 1 | $194,000 | - |
| Atom Power, Inc. NC | Manufacturing | 2 | $111,000 | - |
| Atom Tech, Inc. CA | - | 2 | $215,000 | - |
| Atomic Billing NY | Information & Media | 1 | $170,000 | - |
| Atomic Data LLC. MN | Professional & Technical Services | 1 | $81,016 | - |
| Atomic Machines, Inc. CA | Professional & Technical Services | 6 | $156,577 | - |
| Atomic Semi Inc. CA | Manufacturing | 3 | $148,440 | - |
| Atomic Transport LLC TN | Administrative & Waste Services | 0 | - | F |
| AtomicPE, LLC ME | - | 1 | $150,000 | - |
| AtomicVest Inc. NY | Finance & Insurance | 2 | $190,000 | - |
| Atomix Data, Inc. NJ | - | 1 | $161,637 | - |
| Atommap Corporation NY | Professional & Technical Services | 2 | $150,000 | - |
| Atomo Coffee, Inc. WA | Manufacturing | 1 | $130,000 | - |
| atopile Inc. CA | Professional & Technical Services | 2 | $180,000 | - |
| Atorus Research Inc. NJ | - | 1 | $158,974 | - |
| Atos IT Solutions & Services, Inc. MO | - | 0 | - | - |
| Atos IT Solutions & Svcs Inc ND | - | 0 | - | - |
