| 1 | FILX | Wellman, Inc. | added 10/1992; 1/1994-7/2000; eliminated 4/2001; 7/2005 (not listed) | | NAKINA |
| 2 | FILX | Fruit Industries, Ltd. | 7/1932-7/1935; 7/1937 (not listed) | | NAKINA |
| 3 | FILX | Fiber Industries, Inc. | added 10/1988; eliminated 10/1992 | | NAKINA |
| 4 | FILX | Wellman, Inc. | added 10/92; 1/94-7/2000; eliminated 4/2001 | | NRHS |
| 5 | FILX | Fiber Industries, Inc. | added 10/88; eliminated 10/92 | | NRHS |
| 6 | FILX | Finley Co. Inc. | 10/57-10/66; eliminated 10/67 | | NRHS |
| 7 | FILX | Trinity Rail Management, Inc. | added 4/98; 7/2000 | | NRHS |
| 8 | FILX | *FRUIT INDUSTRIES, LTD. | | | PWRC |
| 9 | FILX | *FIBER INDUSTRIES, INC. | | | PWRC |
| 10 | FILX | +WELLMAN, INC. | | | PWRC |
| 11 | FILX | Fruit Industries Ltd (Wellman) | | | RSRV |
| 12 | FILX | WELLMAN, INC. | | | SCAC4 |
