Chesapeake Energy (CHK)

How to Vote

Most shareholders can vote their shares one of three ways:

The telephone and internet voting procedures are designed to authenticate shareholders’ identities, to allow you to vote your shares and to confirm that your instructions have been properly recorded. Please refer to your proxy card or the information forwarded by your bank, broker or other nominee to see which options are available to you.

If you are a Chesapeake employee and also a shareholder directly, or through the Chesapeake Energy Corporation Savings and Incentive Stock Bonus Plan (the “Plan”), you may receive one proxy for both your Plan shares and shares in accounts that are registered in the same name. This single proxy, which will be sent to you electronically via email, will allow you to simultaneously vote all of your Plan and directly-held shares as one block and will serve as your voting instruction for the trustee of the Plan to vote your Plan shares. To allow sufficient time for the trustee to vote the Plan shares, your voting instructions must be received by 11:00 p.m. (CDT) on June 10, 2009. Please note, however, that since you only vote one time for all shares you own directly and in the Plan, your vote on each proposal will be identical across all of those shares. If you do not vote your proxy, the trustee will vote the Plan shares credited to your Plan account in the same proportion as the Plan shares of other participants for which the trustee has received proper voting instruction.

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How to Vote

Most shareholders can vote their shares one of three ways:

The telephone and internet voting procedures are designed to authenticate shareholders’ identities, to allow you to vote your shares and to confirm that your instructions have been properly recorded. Please refer to your proxy card or the information forwarded by your bank, broker or other nominee to see which options are available to you.

If you are a Chesapeake employee and also a shareholder directly, or through the Chesapeake Energy Corporation Savings and Incentive Stock Bonus Plan (the “Plan”), you will receive one proxy for your Plan shares and shares in accounts that are registered in the same name. This single proxy, which may be sent to you electronically via email, will allow you to simultaneously vote all of your Plan and directly-held shares as one block and will serve as your voting instruction for the trustee of the Plan to vote your Plan shares. To allow sufficient time for the trustee to vote the Plan shares, your voting instructions must be received by 11:00 p.m. (CDT) on June 3, 2008. Please note, however, that since you only vote one time for all shares you own directly and in the Plan, your vote on each proposal will be identical across all of those shares. If you do not vote your proxy, the trustee will vote the Plan shares credited to your Plan account in the same proportion as the Plan shares of other participants for which the trustee has received proper voting instruction.

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Table of Contents

How to Vote

Most shareholders can vote their shares one of three ways:

The telephone and Internet voting procedures are designed to authenticate shareholders’ identities, to allow you to vote your shares and to confirm that your instructions have been properly recorded. Please refer to your proxy card or the information forwarded by your bank, broker or other nominee to see which options are available to you.

If you are a Chesapeake employee and also a shareholder directly, or through the Chesapeake Energy Corporation Savings and Incentive Stock Bonus Plan (the “Plan”), you will receive one proxy for your Plan shares and shares in accounts that are registered in the same name. This single proxy, which will be sent to you electronically via email, will allow you to simultaneously vote all of your Plan and directly-held shares as one block and will serve as your voting instruction for the trustee of the Plan to vote your Plan shares. To allow sufficient time for the trustee to vote the Plan shares, your voting instructions must be received by 11:00 p.m. (CDT) on June 5, 2007. Please note, however, that since you only vote one time for all shares you own directly and in the Plan, your vote on each proposal will be identical across all of those shares. If you do not vote your proxy, the trustee will not vote the Plan shares credited to your Plan account.

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Table of Contents

How to Vote

Most shareholders can vote their shares one of three ways:

The telephone and Internet voting procedures are designed to authenticate shareholders’ identities, to allow you to vote your shares and to confirm that your instructions have been properly recorded. Please refer to your proxy card or the information forwarded by your bank, broker or other nominee to see which options are available to you.

If you are a Chesapeake employee and also a shareholder directly, or through the Chesapeake Energy Corporation Savings and Incentive Stock Bonus Plan (the “Plan”), you will receive one proxy for all of your accounts that are registered in the same name. This single proxy, which will be sent to you electronically via email, will allow you to simultaneously vote all of your non-Plan shares as one block and will serve as your voting instruction for the trustee of the Plan to vote your Plan shares. To allow sufficient time for the trustee to vote the Plan shares, your voting instructions must be received by 11:00 p.m. (CDT) on June 6, 2006. Please note, however, that since you only vote one time for all shares you own, your vote on each proposal will be identical across all of your shares. This new voting and material delivery procedure will simplify your voting process when you hold shares in multiple accounts and will eliminate the extra sets of proxy materials, annual reports and other shareholder communications that you may have received in prior years.

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If you are a participant in the Nomac Drilling 401(k) Plan, you will receive our proxy card for all shares you own through the plan. That proxy card will serve as a voting instruction card for the trustee of the plan. If you do not vote your proxy, the trustee will not vote the plan shares credited to your plan account.