Exhibit 99 (c) PROXY SPECIAL MEETING OF SHAREHOLDERS AMERICAN BANCSHARES OF ARKANSAS, INC. THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS The undersigned hereby appoints Joe S. Hiatt and Margie Hiatt and each of them proxies, with full power of substitution to vote for the undersigned all shares of the common stock of American Bancshares of Arkansas, Inc. which the undersigned would be entitled to vote if personally present at the Special Meeting of Shareholders to be held on Thursday, December 3, 1998, at 10:00 A.M., and at any adjournment or adjournments thereof, upon the matters described in the accompanying Proxy Statement and upon any other business that may properly come before the meeting or any adjournment thereof. Said proxies are directed to vote or refrain from voting upon the following matters as indicated below, and otherwise to vote in their discretion: (1) PROPOSAL TO APPROVE THE MERGER OF THE COMPANY WITH AND INTO SIMMONS FIRST NATIONAL CORPORATION: (mark only one box) [ ] FOR [ ] AGAINST [ ] ABSTAIN (2) Upon such other business as may properly come before the meeting or any adjournment or adjournments thereof. THIS PROXY WILL BE VOTED AS DIRECTED. IF NO DIRECTION IS GIVEN, THIS PROXY WILL BE VOTED "FOR" PROPOSAL (1). The undersigned acknowledge(s) receipt with this proxy of a copy of the Notice of Special Meeting and Proxy Statement. Dated: _________________, 1998. ___________________________________ ----------------------------------- Signature(s) of Shareholders(s) IMPORTANT: Please date this proxy and sign your name exactly as your name appears. If stock is held jointly, both should sign. Person signing in a representative or fiduciary capacity (executors, administrators, trustees, guardians, etc.) should so indicate, giving full title. PLEASE DATE, SIGN AND RETURN PROMPTLY IN THE ENVELOPE PROVIDED.