Casey’s General Stores, Inc. 401(k) Plan (the “KSOP”)
Your election must be received (by mail, fax, phone or via the Internet, as described below)
no later than 5:00 p.m., New York City time, on August 19, 2010,
to be included in the tabulation, unless the Offer is extended.
If, after reading the enclosed materials, you want to tender your Plan Shares (as defined in the enclosed Letter from Principal
Trust Company to Participants in the Casey’s General Stores, Inc. 401(k) Plan (the “ Plan Letter ”)) or withdraw instructions you
have previously provided with respect to your Plan Shares, you may submit your tender or withdrawal instructions via the
Internet at https://www.tabulationsplus.com/casy or by phone at (866) 547-4621 or you may fill out and sign this Instruction
Form and submit it to the Independent Plan Tabulator, who is acting as agent for Principal Trust Company, the trustee of the
KSOP (the “ Trustee ”), in connection with the Casey’s Offer (as defined in the Plan Letter) in accordance with the instructions
set forth in the Plan Letter. The most efficient and reliable means to submit your tender instructions to the Independent Plan
Tabulator is via the Internet at the above Internet address. You will need to reference your control number listed above in order
to submit your tender instructions by phone or via the Internet. If you do not wish to submit your tender instructions through
the Internet or by phone, please complete and sign this Instruction Form.
BY PROVIDING INSTRUCTIONS IN THIS FORM, I HEREBY ELECT TO WITHDRAW AND REVOKE ANY AND ALL
PREVIOUS TENDER INSTRUCTIONS SUBMITTED BY ME TO THE TRUSTEE.
In accordance with the Casey’s General Stores, Inc. (the “ Company ”) Offer to Purchase dated July 29, 2010 (the “ Offer to
Purchase ”), a copy of which I have received, I hereby instruct the Trustee to tender or not to tender shares of the common
stock, no par value per share, of the Company (“ Shares ”), together w