| 1) | I                have reviewed this quarterly report on Form 10-Q of Horizon                Bancorporation, Inc.; |
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| 2) | Based                on my knowledge, this quarterly report does not contain any untrue                statement of a material fact or omit to state a material fact necessary                to                make the statements made, in light of the circumstances under which                such                statements were made, not misleading with respect to the period covered                by                this quarterly report; |
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| 3) | Based                on my knowledge, the financial statements, and other financial information                included in this quarterly report, fairly present in all material                respects                the financial condition, results of operations and cash flows of                the                registrant as of, and for, the periods presented in this quarterly                report; |
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| 4) | The                registrant's other certifying officers and I are responsible for                establishing and maintaining disclosure controls and procedures (as                defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal                control over financial reporting (as defined in Exchange Act Rules                13a-15(f) and 15d-15(f)) for the registrant and we                have: |
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|   | a) | designed                such disclosure controls and procedures to ensure that material                information relating to the registrant, including its consolidated                subsidiaries, is made known to us by others within those entities,                particularly during the period in which this quarterly report is                being                prepared; |
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|   | b) | designed                such internal control over financial reporting, or caused such internal                control over financial reporting to be designed under our supervision,                to                provide reasonable assurance regarding the reliability of financial                reporting and the preparation of financial statements for external                purposes in accordance with generally accepted accounting                principles; |
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|   | c) | evaluated                the effectiveness of the registrant’s disclosure controls and procedures                and presented in this report our conclusions about the effectiveness                of                the disclosure controls and procedures as of the end of the period                covered                by this report based on such evaluation;                and |
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|   | d) | disclosed                in this quarterly report any change in the registrant’s internal control                over financial reporting that occurred during the registrant’s most recent                fiscal quarter that has materially affected, or is reasonably likely                to                materially affect, the registrant’s internal control over financial                reporting; |
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| 5) | The                registrant's other certifying officers and I have disclosed, based                on our                most recent evaluation, to the registrant's auditors and the audit                committee of registrant's board of directors (or persons performing                the                equivalent function): |
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|   | a) | all                significant deficiencies and material weakness in the design or operation                of internal control over financial reporting which are reasonably                likely                to adversely affect the registrant's ability to record, process,                summarize                and report financial information;                and |
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|   | b) | any                fraud, whether or not material, that involves management or other                employees who have a significant role in the registrant's internal                control                over financial reporting. |
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| /s/ Charles S. Conoley                     |   |
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| President and Chief Executive Officer |

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