SONAT INC

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

General form for quarterly reports under Section 13 or 15(d)

5,7

Prospectus Supplement for Delayed or Continuous Offering

5

No description available

General form for quarterly reports under Section 13 or 15(d)

No description available

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

Registration of Securities on Exchange (amendment)

5

Preliminary Proxy Statement

Annual report pursuant to Section 13 or 15(d)

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

Beneficial ownership report for a holder of more than 5% (Schedule 13D)

Beneficial ownership report for a holder of more than 5% (Schedule 13D)

Beneficial ownership report for a holder of more than 5% (Schedule 13D)

Definitive Proxy Statement

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

Beneficial ownership report for a holder of more than 5% (Schedule 13D)

5,7

5

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

FILED AS OF DATE: 19990108

General form for quarterly reports under Section 13 or 15(d)

5

5

Registration statement under Securities Act of 1933

General form for quarterly reports under Section 13 or 15(d)

5

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

General form for quarterly reports under Section 13 or 15(d)

5,7

No description available

Definitive Proxy Statement

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

5,7

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

5,7

Prospectus Supplement for Delayed or Continuous Offering

5,7

Prospectus Supplement for Primary Offering

5,7

Prospectus Supplement with Pricing Information

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Beneficial ownership report for a holder of more than 5% (Schedule 13D)

5,7

General form for quarterly reports under Section 13 or 15(d)

5,7

Prospectus Supplement for Delayed or Continuous Offering

General form for quarterly reports under Section 13 or 15(d)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

General form for quarterly reports under Section 13 or 15(d)

Annual report pursuant to Section 13 or 15(d)

Definitive Proxy Statement

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

No description available

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

5,6

Registration of Securities on Exchange

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Current report pursuant to Section 13 or 15(d)

Prospectus Supplement for Primary Offering

Current report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Additional Information for Proxy Statement/ Votes

Annual report pursuant to Section 13 or 15(d)

Definitive Proxy Statement

General form for quarterly reports under Section 13 or 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Definitive Proxy Statement

Preliminary Proxy Statement

EL PASO ENERGY CORP/DE