Latest filings (excl ownership)
10-K
1997 FY
Annual report
31 Mar 98
15-12G
Securities registration termination
13 Mar 98
DEFM14A
Proxy related to merger
18 Feb 98
8-K
Hugoton Energy Corporation - 11/12/97
20 Nov 97
10-Q
1997 Q3
Quarterly report
14 Nov 97
424B3
Prospectus supplement
1 Oct 97
S-8
Registration of securities for employees
24 Sep 97
10-Q
1997 Q2
Quarterly report
14 Aug 97
10-Q
1997 Q1
Quarterly report
12 May 97
DEF 14A
Definitive proxy
28 Apr 97
424B3
Prospectus supplement
15 Apr 97
424B3
Prospectus supplement
15 Apr 97
POS AM
Prospectus update (post-effective amendment)
10 Apr 97
10-K
1996 FY
Annual report
21 Feb 97
S-2
Registration of securities
21 Feb 97
10-Q
1996 Q3
Quarterly report
14 Nov 96
S-8
Registration of securities for employees
30 Oct 96
10-Q
1996 Q2
Quarterly report
14 Aug 96
10-K/A
1995 FY
Annual report (amended)
23 May 96
10-Q
1996 Q1
Quarterly report
15 May 96
Latest ownership filings