| IBT Local Union 443 | Related tax-exempt org | Representation of union members | CT | 060400785 |
| TRI State Joint Fund | Related tax-exempt org | 3rd party administrator for affiliated entities | CT | 060850110 |
| Lafarge North America | Related taxable corporation/trust | — | MI | — |
| Blakeslee Arpaia & Chapman INC | Related taxable corporation/trust | — | CT | — |
| Heating OIL Partners | Related taxable corporation/trust | — | CT | — |
| Dichello's Distributors INC | Related taxable corporation/trust | — | CT | — |
| EDER Brothers INC | Related taxable corporation/trust | — | CT | — |
| Petro Heating OIL | Related taxable corporation/trust | — | RI | — |
| Bimbo Bakeries Sales INC | Related taxable corporation/trust | — | PA | — |
| G&G Beverage Distributors | Related taxable corporation/trust | — | CT | — |
| Brescome Barton INC | Related taxable corporation/trust | — | CT | — |
| New Haven Chemicals INC | Related taxable corporation/trust | — | CT | — |
| First Student | Related taxable corporation/trust | — | OH | — |
| Mulitprints INC | Related taxable corporation/trust | — | CT | — |
| Tilcon of CT INC | Related taxable corporation/trust | — | CT | — |
| YRC INC | Related taxable corporation/trust | — | KS | — |
| Metal Management CONN INC | Related taxable corporation/trust | — | CT | — |
| United Parcel Service | Related taxable corporation/trust | — | OH | — |
| Smedley Company INC | Related taxable corporation/trust | — | CT | — |
| O&G Industries INC | Related taxable corporation/trust | — | CT | — |
| Town of Guilford | Related taxable corporation/trust | — | CT | — |
| Stamford Wrecking | Related taxable corporation/trust | — | CT | — |
| L Suzio Construction CO | Related taxable corporation/trust | — | CT | — |
| Arkansas BEST Freight | Related taxable corporation/trust | — | CT | — |
| Town of Ansonia BOE | Related taxable corporation/trust | — | CT | — |