| 1 | SUPX | Transit Co., Ltd. | 7/1930-1/1952; eliminated 10/1953 | | NAKINA |
| 2 | SUPX | Union Tank Car Co. | added 10/1953; 7/1954-10/1957; eliminated 1/1960 | | NAKINA |
| 3 | SUPX | Supresta U.S. LLC | added 7/2005; 7/2005; eliminated 1/2008 | | NAKINA |
| 4 | SUPX | Transit Co., Ltd. | 4/38-1/52; eliminated 10/53 | | NRHS |
| 5 | SUPX | Union Tank Car Co. | added 10/53; 10/57; eliminated 1/60 | | NRHS |
| 6 | SUPX | *UNION TANK CAR CO. [TRANSIT CO., LTD.] | | | PWRC |
| 7 | SUPX | +SUPRESTA U.S., LLC | | | PWRC |
| 8 | SUPX | ICL SUPRESTA INC | | | SCAC4 |
