SONAT INC of BIRMINGHAM, AL filed a DEF 14A with the SEC on 1999-03-23. Industry: Natural Gas Transmission.
| Filed | Form |
|---|---|
| 1999-05-05 | DEFS14A |
| 1999-04-09 | PRE 14A |
| 1999-03-23 | DEF 14A |
| 1998-03-18 | DEF 14A |
| 1997-03-19 | DEF 14A |
| 1996-03-20 | DEFA14A |
| 1996-03-13 | DEF 14A |
| 1995-04-21 | DEFA14A |
| 1995-03-15 | DEF 14A |
| 1994-03-18 | DEF 14A |
| 1994-03-02 | PRE 14A |