320 filings
Page 12 of 16
8-K
ogcsuoex3ayr72
16 Sep 10
Entry into a Material Definitive Agreement
12:00am
8-K
huhiy4dt
8 Sep 10
Regulation FD Disclosure
12:00am
8-K
lp1i1bdwk7pseqi
31 Mar 10
Results of Operations and Financial Condition
12:00am
NT 10-K
s5pb35
31 Mar 10
Notice of late annual filing
12:00am
8-K
44bfo
24 Mar 10
Entry into a Material Definitive Agreement
12:00am
8-K
p51b8ex
1 Mar 10
JP Morgan High Yield Conference
12:00am
8-K
z5n5vxnno
8 Feb 10
Regulation FD Disclosure
12:00am
8-K
x8x8pg0wi3vbwz68i
8 Feb 10
Chaparral Energy Announces Year-End Reserves
12:00am
8-K
8nj1pkxyehnxpib zl4
15 Dec 09
Termination of a Material Definitive Agreement
12:00am
DEFA14A
lzlree98 n8z5bjpz
25 Nov 09
Additional proxy soliciting materials
12:00am
8-K
sulsj9
25 Nov 09
Chaparral Energy and United Refining Energy Announce Adjusted
12:00am
8-K
v28vcb8fgr
25 Nov 09
This presentation contains forward-looking statements. These forward-looking statements relate to, among other things, our
12:00am
DEFA14A
d8lad miu
25 Nov 09
Additional proxy soliciting materials
12:00am
8-K
olk8dp
14 Oct 09
This presentation contains forward-looking statements. These forward-looking statements relate to, among other things, our
12:00am
DEFA14A
g09swoexk 8lxnxmv
14 Oct 09
Additional proxy soliciting materials
12:00am
DEFA14A
e965p5idc7lms kkjbr
14 Oct 09
Additional proxy soliciting materials
12:00am