| 1 | STAX | Stauffer Chemical Co. (Northern California Branch) | 7/1930-7/1935 | | NAKINA |
| 2 | STAX | Stauffer Chemical Co. — Northern California Branch | 7/1937-7/1954; eliminated 7/1956 | | NAKINA |
| 3 | STAX | Stauffer Chemical Co. (Western Branch) | added 7/1956; 10/1957-1/1975 | | NAKINA |
| 4 | STAX | Stauffer Chemical Co. | 1/1980; eliminated 4/1990 | | NAKINA |
| 5 | STAX | Rhone-Poulenc Basic Chemicals Co. | added 4/1990; 1/1994; eliminated 7/1996 | | NAKINA |
| 6 | STAX | OCI Chemical Corp. | added 7/1996; 7/2000-7/2005 | | NAKINA |
| 7 | STAX | Stauffer Chemical Co. -- Northern California Branch | 4/38-1/52; eliminated 7/56 | | NRHS |
| 8 | STAX | Stauffer Chemical Co. (Western Branch) | added 7/56; 10/57-1/75 | | NRHS |
| 9 | STAX | Stauffer Chemical Co. | 1/80; eliminated 4/90 | | NRHS |
| 10 | STAX | Rhone-Poulenc Basic Chemicals Co. | added 4/90; 1/94; eliminated 7/96 | | NRHS |
| 11 | STAX | OCI Chemical Corp. | added 7/96; 7/2000 | | NRHS |
| 12 | STAX | OCI CHEMICAL CORPORATION [(RPBX) RHONE-POULENC BASIC CHEMICALS CO.; STAUFFER CHEMICAL CO.] | | | PWRC |
| 13 | STAX | Stauffer Chemical (OCI Chemical Corporation) | | | RSRV |