| Amber Investment Corporation AK | Other Services | 0 | — | A |
| Amber Mechanical Contractors Inc IL | Construction | 0 | — | D |
| Amber NaturalZ, Inc. UT | Manufacturing | 0 | — | F |
| Amber Ridge Apartments NC | Real Estate | 0 | — | A |
| Amber Semiconductor, Inc. CA | Manufacturing | 1 | $190,000 | — |
| Amber Stone Mental Health Services LLC CT | Healthcare & Social Assistance | 1 | $93,600 | — |
| Amber Water Pros, LLC NY | Construction | 0 | — | F |
| Amber Waves Inc. ND | Manufacturing | 0 | — | A |
| Amber Well Drilling, LLC NY | Construction | 0 | — | F |
| Amberdata Inc. FL | Information & Media | 2 | $136,719 | — |
| Amberwood Care Centre IL | Healthcare & Social Assistance | 0 | — | F |
| Amberwood Estates MO | Healthcare & Social Assistance | 0 | — | F |
| Ambi Robotics, Inc. CA | Professional & Technical Services | 1 | $215,000 | — |
| Ambia Engery, LLC UT | Construction | 0 | — | A |
| Ambiance U.S.A., Inc. CA | Manufacturing | 0 | — | A |
| Ambience Healthcare, Inc. CA | Professional & Technical Services | 3 | $196,220 | — |
| Ambient AI, Inc. CA | Information & Media | 3 | $147,774 | — |
| Ambient Comfort NJ | Construction | 0 | — | F |
| Ambient Electric, Inc. CA | Construction | 0 | — | A |
| Ambient Photonics CA | Manufacturing | 0 | — | A |
| Ambient Temperature Corporation MA | Construction | 0 | — | F |
| AMBIENTE OPCO, LLC TX | Wholesale Trade | 0 | — | F |
| Ambiente Sedona LLC AZ | Accommodation & Food Services | 0 | — | F |
| Ambio, Inc. GA | Professional & Technical Services | 3 | $116,333 | — |
| AmbioPharm, Inc. SC | Manufacturing | 2 | $68,328 | C |
| Ambipar Response Florida, LLC, dba IntraCoastal Environmental LLC FL | Administrative & Waste Services | 0 | — | F |
| Ambipar Response OSE, LLC AL | Administrative & Waste Services | 0 | — | D |
| AMBIQ MICRO, INC. TX | Manufacturing | 5 | $171,000 | — |
| Ambit Construction & Design, Inc., CA | Construction | 0 | — | A |
| Ambit Energy - Call Center & Sales Support Office TX | — | 0 | — | — |
| Ambit Management LLC TX | — | 0 | — | — |
| Ambit RD Inc NJ | Professional & Technical Services | 2 | $136,250 | — |
| Ambit Spray Foam LLC TX | Manufacturing | 2 | $75,000 | — |
| Ambitions California, Inc CA | Healthcare & Social Assistance | 0 | — | F |
| Ambitrans Ambulance FL | Healthcare & Social Assistance | 0 | — | D |
| Amble Electric, LLC MI | Construction | 0 | — | F |
| Ambler Extended Care Center PA | Healthcare & Social Assistance | 0 | — | F |
| Ambling Property Investments LLC GA | Real Estate | 0 | — | F |
| Amborella LLC TX | Management of Companies | 1 | $71,000 | — |
| Ambow Education Inc. CA | Educational Services | 1 | $76,960 | — |
| Ambox Operations Co PA | Transportation & Warehousing | 0 | — | C |
| Amboy Contractors, LLC OH | Construction | 0 | — | F |
| Ambri MA | Manufacturing | 0 | — | B |
| Ambriant at Austin Village NC | Healthcare & Social Assistance | 0 | — | A |
| Ambriant at Avondale SC | Healthcare & Social Assistance | 0 | — | A |
| Ambright Tech LLC TX | Professional & Technical Services | 1 | $120,000 | — |
| Ambrit Industries CA | Manufacturing | 0 | — | F |
| Ambros Inc GU | Wholesale Trade | 0 | — | B |
| Ambrose Construction TX | Construction | 0 | — | A |
| Ambrose Sales KS | Wholesale Trade | 0 | — | B |