| 1 | FMTX | Sinclair Cuba Oil Co., S.A. | added 1/1958; eliminated 1/1961 | | NAKINA |
| 2 | FMTX | Sinclair Refining Co. | 4/1938-10/1957; eliminated 1/1958 | | NAKINA |
| 3 | FMTX | Freeport Mexican Fuel Oil Corp. (Sinclair Refining Co.) | 7/1923-7/1935 | | NAKINA |
| 4 | FMTX | Freeport & Mexican Fuel Oil Corp. | 8/1920 | | NAKINA |
| 5 | FMTX | Freeport Mexican Fuel Oil Corp. (Sinclair Refining Co.) | Apr-38 | | NRHS |
| 6 | FMTX | Sinclair Refining Co. | 1/52-10/57; eliminated 1/58 | | NRHS |
| 7 | FMTX | Sinclair Cuba Oil Co., S.A. | added 1/58 | | NRHS |
| 8 | FMTX | *SINCLAIR REFINING CO. [FREEPORT MEXICAN FUEL OIL CORP.] | | | PWRC |
| 9 | FMTX | +FREEDOM METALS, INC. | | | PWRC |
| 10 | FMTX | FREEDOM METALS INC | | | SCAC4 |