| U.F.P.I. Industries TN | Manufacturing | 0 | — | D |
| u.form Detroit Inc. MI | Manufacturing | 0 | — | F |
| U.P. MACHINE & ENGINEERING MI | Manufacturing | 0 | — | A |
| U.P. Rehab Services, LLC MI | Healthcare & Social Assistance | 2 | $102,003 | — |
| U.S Airways IN | — | 0 | — | — |
| U.S Census Bureau AZ | — | 0 | — | — |
| U.S. Agency for Global Media DC | Administrative & Waste Services | 0 | — | A |
| U.S. American Concrete Mix Corp. FL | Construction | 0 | — | A |
| U.S. Army AL | Public Administration | 0 | — | A |
| U.S. Army MO | Public Administration | 0 | — | A |
| U.S. ARMY OK | Transportation & Warehousing | 0 | — | B |
| U.S. Army Dugway Proving Ground, ATEC UT | Professional & Technical Services | 0 | — | D |
| U.S. Auto Parts Network, Inc./Distribution CA | — | 0 | — | — |
| U.S. AUTO SALES, INC. GA | — | 0 | — | — |
| U.S. Aviation Services Corp-La Intntl Airport CA | — | 0 | — | — |
| U.S. Aviation Services Corp. VA | — | 0 | — | — |
| U.S. Axle, Inc. PA | Manufacturing | 0 | — | F |
| U.S. Bancorp Investments, Inc. MN | Finance & Insurance | 1 | $111,405 | — |
| U.S. Bank CA | — | 0 | — | — |
| U.S. Bank Lunken Operations Center OH | — | 0 | — | — |
| U.S. BANK NATIONAL ASSOCIATION MN | Finance & Insurance | 282 | $133,766 | — |
| U.S. Bank Trust Company National Association MN | Finance & Insurance | 2 | $98,456 | — |
| U.S. Bellows TX | Manufacturing | 0 | — | A |
| U.S. Best Repair Service, Inc CA | — | 0 | — | — |
| U.S. Borax Inc. CA | Mining & Extraction | 5 | $123,537 | — |
| U.S. Business Products, Inc. AL | Wholesale Trade | 0 | — | A |
| U.S. Cargo Systems NC | Manufacturing | 0 | — | F |
| U.S. Cellular MO | — | 0 | — | — |
| U.S. Cellular OK | — | 0 | — | — |
| U.S. Cellular Corporation IL | Information & Media | 4 | $128,870 | — |
| U.S. Cellular Corporation Amended IN | — | 0 | — | — |
| U.S. Construction Corp. FL | Construction | 1 | $117,000 | — |
| U.S. Cotton, LLC NM | — | 0 | — | — |
| U.S. Data Mining Group, Inc. FL | Information & Media | 1 | $2,599,090 | — |
| U.S. Department of Agriculture AZ | Agriculture & Forestry | 0 | — | B |
| U.S. Department of Labor MI | Healthcare & Social Assistance | 0 | — | A |
| U.S. Department of Veterans Affairs, Veterans Health Adminisatration CA | Healthcare & Social Assistance | 1 | $340,000 | — |
| U.S. Department of Veterans Affairs, Veterans Health Administration CA | Healthcare & Social Assistance | 2 | $245,000 | — |
| U.S. Department of Veterans Affairs, Veterans Health Administration NV | Healthcare & Social Assistance | 1 | $300,000 | — |
| U.S. Department of Veterans Affairs, Veterans Health Administration, VISN 21, VA Central California Health Care System CA | Healthcare & Social Assistance | 1 | $315,000 | — |
| U.S. Display Group CA | Manufacturing | 0 | — | F |
| U.S. Display Group TN | Manufacturing | 0 | — | A |
| U.S. ELECTRONICS, INC. IL | Professional & Technical Services | 8 | $93,886 | — |
| U.S. ELECTRONICS, INC. MN | Professional & Technical Services | 5 | $100,901 | — |
| U.S. Environmental Rental Corporation MA | Real Estate | 0 | — | A |
| U.S. Environmental Rental Corporation NJ | Real Estate | 0 | — | A |
| U.S. Facilities, Inc. NJ | Transportation & Warehousing | 0 | — | A |
| U.S. Facilities, Inc. PA | Administrative & Waste Services | 0 | — | D |
| U.S. Facilities, Inc. VA | Transportation & Warehousing | 0 | — | D |
| U.S. Financial Technology, LLC MD | Finance & Insurance | 1 | $131,913 | — |
