OKLAHOMA CITY, Aug. 4 /PRNewswire/ -- Chaparral Energy, Inc. announced today that it will hold a conference call on Wednesday, August 11, 2010 at 11:00 a.m. Eastern / 10:00 a.m. Central to discuss its second quarter 2010 financial and operating results.

OKLAHOMA CITY, May 6 /PRNewswire/ -- Chaparral Energy, Inc. announced today that it will hold a conference call on Thursday, May 13, 2010 at 11:00 a.m. Eastern / 10:00 a.m. Central to discuss its first quarter 2010 financial and operating results.

OKLAHOMA CITY, April 7 /PRNewswire/ -- Chaparral Energy, Inc. announced today that it will hold a conference call on Wednesday, April 14, at 11:00 a.m. Eastern / 10:00 a.m. Central to discuss its fourth quarter 2009 financial and operating results.

OKLAHOMA CITY, Feb. 16 /PRNewswire/ -- Chaparral Energy, Inc. ("Chaparral") today announced that it is withdrawing a previously announced $400 million private placement of senior notes.

OKLAHOMA CITY, Feb. 8 /PRNewswire/ -- Chaparral Energy, Inc. ("Chaparral") today announced year-end 2009 reserves and reaffirmed 2009 EBITDA* guidance. YEAR-END 2009 RESERVES As of December 31, 2009, using new pricing methodology required by the U.S.