CHESAPEAKE OPERATING INC

Notice of Effectiveness

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Prospectus Supplement for Primary Offering

Notice of Effectiveness

Registration statement under Securities Act of 1933

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Notice of Effectiveness

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Automatic Shelf Registration

Prospectus Supplement for Delayed or Continuous Offering

Prospectus Supplement for Primary Offering

Automatic Shelf Registration

Prospectus Supplement for Delayed or Continuous Offering

Prospectus Supplement for Primary Offering

Prospectus Supplement for Delayed or Continuous Offering

Prospectus Supplement for Primary Offering

CHESAPEAKE ENERGY CORP;CHESAPEAKE OPERATING INC;NOMAC DRILLING LLC;Nomac Acquisition, Inc.;CHESAPEAKE OILFIELD SERVICES LLC

CHESAPEAKE ENERGY CORP;CHESAPEAKE OPERATING INC;NOMAC DRILLING LLC;Nomac Acquisition, Inc.

Letter from the SEC

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

No description available

Post-effective amendment to an automatic shelf registration statement

No description available

Post-effective amendment to an automatic shelf registration statement

Post-effective amendment to an automatic shelf registration statement

Post-effective amendment to an automatic shelf registration statement