| ATI Restoration, LLC. NJ | Construction | 0 | — | F |
| ATI Restoration, LLC. NV | Construction | 0 | — | F |
| ATI Restoration, LLC. OH | Administrative & Waste Services | 0 | — | F |
| ATI Restoration, LLC. OR | Administrative & Waste Services | 0 | — | F |
| ATI Restoration, LLC. PA | Construction | 0 | — | F |
| ATI Restoration, LLC. SC | Administrative & Waste Services | 0 | — | A |
| ATI Restoration, LLC. TN | Construction | 0 | — | F |
| ATI Restoration, LLC. UT | Administrative & Waste Services | 0 | — | A |
| ATI Restoration, LLC. VA | Administrative & Waste Services | 0 | — | A |
| ATI Restoration, LLC. WA | Construction | 0 | — | F |
| ATI Specialty Materials, LLC NC | Manufacturing | 0 | — | A |
| ATI Specialty Materials, LLC NY | Manufacturing | 0 | — | F |
| ATI Specialty Materials, LLC PA | Manufacturing | 0 | — | D |
| ATI Specialty Materials, LLC SC | Manufacturing | 0 | — | A |
| ATI Specialty Rolled Products NY | Manufacturing | 0 | — | A |
| ATI Tech and Logistics MD | Management of Companies | 0 | — | A |
| ATI Vandenberg Ambulance Inc IL | Healthcare & Social Assistance | 0 | — | F |
| ATI Windows Inc. CA | Manufacturing | 0 | — | F |
| ATIP CORPORATION OK | Retail Trade | 0 | — | C |
| Atira Hospitality, LLC IL | Accommodation & Food Services | 1 | $120,000 | — |
| ATIS Elevator Inspections, LLC MO | Professional & Technical Services | 0 | — | F |
| ATK ID | — | 0 | — | — |
| ATK (Eagle Industries Unlimited) MO | — | 0 | — | — |
| ATK AudioTek CA | — | 0 | — | — |
| ATK Construction Inc OR | Construction | 0 | — | A |
| ATK Energetic Systems VA | — | 0 | — | — |
| ATK Mission Systems Group Space Division NASA Langley Facility VA | — | 0 | — | — |
| ATK Space Systems CA | Manufacturing | 0 | — | F |
| Atkins & Stang Inc OH | Construction | 0 | — | A |
| Atkins and Pearce, Inc. KY | Manufacturing | 0 | — | C |
| Atkins and Stang, Inc. OH | Construction | 0 | — | A |
| Atkins Building Services & Products Inc AR | Administrative & Waste Services | 0 | — | A |
| Atkins Building Services & Products Inc MO | Administrative & Waste Services | 0 | — | A |
| Atkins Care Center, Inc. AR | Healthcare & Social Assistance | 0 | — | F |
| Atkins Care Center, Inc. dba Atkins Nursing and Rehabilitation Center AR | Healthcare & Social Assistance | 0 | — | F |
| Atkins Energy America TN | Administrative & Waste Services | 0 | — | A |
| ATKINS KROLL, INC. GU | Retail Trade | 2 | $67,153 | — |
| Atkins North America, Inc. FL | Professional & Technical Services | 6 | $93,433 | — |
| Atkins Nuclear Secured TN | Administrative & Waste Services | 0 | — | A |
| Atkins Nuclear Secured - Aiken SC | Administrative & Waste Services | 0 | — | A |
| Atkins Nuclear Secured - Albuquerque NM | Administrative & Waste Services | 0 | — | A |
| Atkins Nuclear Secured - Idaho Falls ID | Administrative & Waste Services | 0 | — | A |
| Atkins Nuclear Secured - Oak Ridge TN | Administrative & Waste Services | 0 | — | A |
| Atkins Nuclear Secured - Richland WA | Administrative & Waste Services | 0 | — | A |
| Atkins Nuclear Secured LLC - Rollup TN | Administrative & Waste Services | 0 | — | A |
| Atkins Sheep Ranch CA | Construction | 0 | — | F |
| Atkinson Farms II, Inc CA | Agriculture & Forestry | 0 | — | A |
| Atkinson Grain & Fertilizer, Inc. IL | Wholesale Trade | 0 | — | D |
| Atkinson Hay, Inc CA | Agriculture & Forestry | 0 | — | F |
| Atkinson Industries KS | Manufacturing | 0 | — | F |
