| ATU TECH Properties LLC | Disregarded entity | Holds property on behalf of ATU training | MD | 471407215 |
| Amalgamated Transit Union Pension Plan for International Officers and Ee's | Related tax-exempt org | Provide pension benefits | DC | 536014540 |
| ATU Disaster Relief Fund | Related tax-exempt org | Disaster relief | DC | 522344872 |
| ATU Jerry Fund | Related tax-exempt org | Research for multiple sclerosis | DC | 521445945 |
| ATU Local Union Officers and Employees 401(k) Plan No 002 | Related tax-exempt org | Provide pension benefits | DC | 522059293 |
| ATU National 401(k) Plan No 001 | Related tax-exempt org | Provide pension benefits | DC | 522059290 |
| ATU Local 1220 & Old Dominion Transit Section 457 Deferred Compensation PLA | Related tax-exempt org | Provide pension benefits | DC | 900258323 |
| ATU 1742 TRI-State Authority Section 457 Deferred COMP Plan | Related tax-exempt org | Provide pension benefits | DC | 900258323 |
| ATU Local 313 and QUAD City Garage Policy Group Section 457 Deferred COMP P | Related tax-exempt org | Provide pension benefits | DC | 900258323 |
| ATU Local 1212 & Chattanooga AREA REG Transportation SEC 457 DEF COMP PL | Related tax-exempt org | Provide pension benefits | DC | 900258323 |
| ATU Governmental Profit Sharing Plan | Related tax-exempt org | Provide pension benefits | DC | 223975924 |
| ATU COPE Voluntary Fund | Related tax-exempt org | Political action committee | DC | 900052963 |
| ATU COPE Special Holding Account | Related tax-exempt org | Political action committee | DC | 522256338 |
| ATU New YORK COPE Fund | Related tax-exempt org | Political action committee | NY | 522256341 |
| ATU COPE Wisconsin Account | Related tax-exempt org | Political action committee | WI | 204972762 |
| ATU Missouri Account | Related tax-exempt org | Political action committee | MO | 522256377 |
| ATU COPE Florida Campaign | Related tax-exempt org | Political action committee | FL | 043746027 |
| ATU Training Center INC | Related tax-exempt org | Training center | MD | 471180193 |
| ATU Local 568 and ERIE Metropolitan Transity Authority Section 457 Deferred | Related tax-exempt org | Provide pension benefits | PA | 900258323 |