Chesapeake Energy (CHK)

COMMON STOCK OFFERING

OKLAHOMA CITY, OKLAHOMA, JUNE 26, 2006 – Chesapeake Energy Corporation (NYSE:CHK) today announced that it intends to commence a public offering of 20 million shares of its common stock. Chesapeake intends to use the net proceeds from the offering, together with proceeds from concurrent public offerings of senior notes and mandatory convertible preferred stock, to fund its recently announced Barnett Shale acquisitions for $932 million, to repay outstanding indebtedness under its revolving credit facility and for general corporate purposes.

The offering will be made under a shelf registration statement that became effective on December 8, 2005. The company intends to grant underwriters a 30-day option to purchase a maximum of three million additional shares of its common stock.

Goldman, Sachs & Co., Banc of America Securities LLC, Bear, Stearns & Co. Inc., Lehman Brothers Inc. and Raymond James & Associates will act as joint book-running managers for the offering. The offering is being made only by means of a prospectus and related prospectus supplement, copies of which may be obtained from Goldman, Sachs & Co., Attn: Prospectus Dept.,  85 Broad Street, New York, NY 10004 , Fax: 212 902 9316 or email at prospectus-ny@ny.email.gs.com; Banc of America Securities LLC, Attn: Prospectus Department, 100 West 33rd Street, New York, NY 10001, 646-733-4166; Bear, Stearns & Co. Inc., Attn: Prospectus Department, 383 Madison Avenue, New York, NY 10179, (631) 274-8321; Lehman Brothers Inc., c/o ADP Financial Services, Integrated Distribution Services, 1155 Long Island Avenue, Edgewood, NY 11717; Raymond James & Associates, 880 Carillon Parkway, St. Petersburg, FL 33716, 727-567-2400. An electronic copy of the prospectus and prospectus supplement is available from the Securities and Exchange Commission’s website at www.sec.gov.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of these securities in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any state.

This document contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Forward-looking statements include estimates and give our current expectations or forecasts of future events. Although we believe our forward-looking statements are reasonable, they can be affected by inaccurate assumptions or by known or unknown risks and uncertainties.

Chesapeake Energy Corporation is the second largest independent producer of natural gas in the U.S. Headquartered in Oklahoma City, the company’s operations are focused on exploratory and developmental drilling and corporate and property acquisitions in the Mid-Continent, Permian Basin, South Texas, Texas Gulf Coast, Barnett Shale, Ark-La-Tex and Appalachian Basin regions of the United States. The company’s Internet address is www.chkenergy.com.

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COMMON STOCK OFFERING

OKLAHOMA CITY, OKLAHOMA, DECEMBER 8, 2005 – Chesapeake Energy Corporation (NYSE:CHK) today announced that it intends to commence a public offering of 20.0 million shares of its common stock. Chesapeake intends to use the net proceeds of the offering to repay debt under its bank credit facility or for general corporate purposes.

The offering will be made under a shelf registration statement that became effective when filed by the company today. The company intends to grant the underwriters a 30-day option to purchase a maximum of 3.0 million additional shares of its common stock to cover over-allotments if any.

UBS Investment Bank, Banc of America Securities LLC, Credit Suisse First Boston, Lehman Brothers and Raymond James will be joint book-running managers for the offering. Copies of the preliminary prospectus and records relating to the offering may be obtained from the offices of UBS Securities LLC, Prospectus Department, 299 Park Avenue, 29^th Floor, New York, NY 10171, 212-821-3000; Banc of America Securities LLC, Attn: Prospectus Department, 100 West 33^rd Street, New York, NY 10001, 646-733-4166; Credit Suisse First Boston, One Madison Avenue, Level 1B, New York, NY 10010, 212-325-2580; Lehman Brothers Inc., c/o ADP Financial Services, Integrated Distribution Services, 1155 Long Island Avenue, Edgewood, NY 11717; Raymond James & Associates, 880 Carillon Parkway, St. Petersburg, FL 33716, 727-567-2400.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of these securities in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any state.

This document contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Forward-looking statements include estimates and give our current expectations or forecasts of future events. Although we believe our forward-looking statements are reasonable, they can be affected by inaccurate assumptions or by known or unknown risks and uncertainties.

Chesapeake Energy Corporation is the second largest independent producer of natural gas in the U.S. Headquartered in Oklahoma City, the company’s operations are focused on exploratory and developmental drilling and property acquisitions in the Mid-Continent, Permian Basin, South Texas, Texas Gulf Coast, Barnett Shale, Ark-La-Tex and Appalachian Basin regions of the United States.

COMMON STOCK OFFERING

OKLAHOMA CITY, OKLAHOMA, SEPTEMBER 7, 2005 – Chesapeake Energy Corporation (NYSE:CHK) today announced that it intends to commence a public offering of 8 million shares of its common stock. Chesapeake intends to use the net proceeds of the offering, together with proceeds from a concurrent offering of convertible preferred stock, to repay debt under its bank credit facility or for general corporate purposes.

The offering will be made under the company’s existing shelf registration statement. The company intends to grant the underwriters a 30-day option to purchase a maximum of 1.2 million additional shares of its common stock to cover any over-allotments in the offering.

Lehman Brothers, Banc of America Securities LLC, Credit Suisse First Boston, Raymond James and Deutsche Bank will be joint book-running managers for the offering. Copies of the preliminary prospectus and records relating to the offering may be obtained from the offices of Lehman Brothers Inc., c/o ADP Financial Services, Integrated Distribution Services, 1155 Long Island Avenue, Edgewood, NY 11717; Banc of America Securities LLC, Attn: Prospectus Department, 100 West 33^rd Street, New York, NY 10001, 646-733-4166; Credit Suisse First Boston, One Madison Avenue, Level 1B, New York, NY 10010, 212-325-2580; Raymond James & Associates, 880 Carillon Parkway, St. Petersburg, FL 33716, 727-567-2400; Deutsche Bank, Attn Prospectus Department: 1290 Avenue of Americas, New York, NY 10019, fax 212-468-5333.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of these securities in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any state.

This document contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Forward-looking statements include estimates and give our current expectations or forecasts of future events. Although we believe our forward-looking statements are reasonable, they can be affected by inaccurate assumptions or by known or unknown risks and uncertainties.

Chesapeake Energy Corporation is the third largest independent producer of natural gas in the U.S. Headquartered in Oklahoma City, the company's operations are focused on exploratory and developmental drilling and producing property acquisitions in the Mid-Continent, Permian Basin, South Texas, Texas Gulf Coast, Barnett Shale and Ark-La-Tex regions of the United States.