| Hart's Family Center, Inc AR | Retail Trade | 0 | — | A |
| Hart-Hanks-Texarkana TX | — | 0 | — | — |
| Hartcorn Plumbing & Heating Inc NY | Construction | 0 | — | F |
| HARTCORN PLUMBING & HTG INC NY | Construction | 0 | — | F |
| Harte Enterprises Inc. CT | Management of Companies | 0 | — | A |
| Harte Hanks KS | — | 0 | — | — |
| Harte Hanks Direct Marketing/Fullerton, LLC CA | — | 0 | — | — |
| Harte Hanks Direct Marketing/Jacksonville, LLC FL | — | 0 | — | — |
| Harte Hanks Marketing, Inc. MD | — | 0 | — | — |
| Harte Infiniti Inc CT | Retail Trade | 0 | — | A |
| Harte Nissan Inc CT | Retail Trade | 0 | — | D |
| Harte Volkswagen of Meriden Inc CT | Retail Trade | 0 | — | B |
| Harte-Hanks TX | — | 0 | — | — |
| Harte-Hanks Shoppers, Inc., Brea Prepress CA | — | 0 | — | — |
| Hartel's Disposal MN | Administrative & Waste Services | 0 | — | F |
| Harter House Shell Knob LLC MO | Retail Trade | 0 | — | C |
| Harter House/Eastgate, Inc. MO | Retail Trade | 0 | — | B |
| Harter Secrest & Emery LLP NY | Professional & Technical Services | 1 | $75,670 | — |
| Harter's Fox Valley Disposal WI | Administrative & Waste Services | 0 | — | F |
| Harter's Quick Clean Up WI | Administrative & Waste Services | 0 | — | C |
| Harter's Trash and Recycling WI | Administrative & Waste Services | 0 | — | A |
| Harters Lakeside Disposal LLC WI | Administrative & Waste Services | 0 | — | F |
| Hartford Appeals CT | Public Administration | 0 | — | A |
| Hartford Bakery, Inc. IN | Manufacturing | 0 | — | F |
| Hartford fence Suppply FL | Wholesale Trade | 0 | — | F |
| Hartford Finishing Inc. WI | Manufacturing | 0 | — | F |
| Hartford Finishing Inc. East WI | Manufacturing | 0 | — | F |
| Hartford Fire Insurance Company CT | Finance & Insurance | 36 | $140,592 | — |
| Hartford Golf Club CT | Arts & Entertainment | 0 | — | B |
| HARTFORD HEALTH CARE CORP CT | Healthcare & Social Assistance | 0 | — | F |
| Hartford HealthCare Corporation CT | Healthcare & Social Assistance | 2 | $106,475 | F |
| Hartford HealthCare Medical Group, Inc. CT | Healthcare & Social Assistance | 19 | $604,042 | — |
| Hartford Hospital CT | Healthcare & Social Assistance | 3 | $180,851 | — |
| Hartford Hospital/HHC CT | Healthcare & Social Assistance | 0 | — | A |
| Hartford International University for Religion and Peace CT | Educational Services | 1 | $61,194 | — |
| Hartford Iron & Metal IN | Wholesale Trade | 0 | — | F |
| Hartford Jackson LLC CA | Manufacturing | 0 | — | A |
| Hartford Precision Products dba Waterbury Swiss Automatics CT | Manufacturing | 0 | — | A |
| Hartford Roman Catholic Diocesan Corporation CT | Other Services | 1 | $44,436 | — |
| Hartford South, LLC FL | Construction | 0 | — | F |
| Hartford Truck Equipment Inc CT | Manufacturing | 0 | — | F |
| Hartford Windsor Marriot Airport CT | — | 0 | — | — |
| Harting Inc. of North America IL | Manufacturing | 0 | — | F |
| Hartington Hotel Group NE | Accommodation & Food Services | 0 | — | A |
| Hartje Lumber, Inc. WI | Retail Trade | 0 | — | D |
| HARTLAGE FENCE COMPANY KY | Construction | 0 | — | A |
| Hartlage Management Co KY | Wholesale Trade | 0 | — | A |
| Hartland Building & Restoration Company CT | Construction | 0 | — | A |
| HARTLAND HILLS KY | Healthcare & Social Assistance | 0 | — | F |
| HARTLAND TRANSPORTATION, LLC TX | Transportation & Warehousing | 0 | — | A |
