MPB 2025 Special Meeting Proxy Statement

• the integration of William Penn’s business and operations with those of Mid Penn may take longer than anticipated, may be more costly than anticipated and may have unanticipated adverse results relating to William Penn’s or Mid Penn’s existing businesses; and • the anticipated cost savings and other synergies of the merger may take longer to be realized or may not be achieved in their entirety, and attrition in key client, partner and other relationships relating to the merger may be greater than expected. Because forward-looking statements are subject to assumptions and uncertainties, actual results may differ materially from those expressed or implied by these forward-looking statements. You are cautioned not to place undue reliance on these statements, which speak only as of the date of this joint proxy statement/prospectus or the date of any document incorporated by reference in this joint proxy statement/prospectus. All subsequent written and oral forward-looking statements concerning the merger or other matters addressed in this joint proxy statement/prospectus and attributable to Mid Penn or William Penn or any person acting on their behalf are expressly qualified in their entirety by the cautionary statements contained or referred to in this joint proxy statement/prospectus. Except to the extent required by applicable law or regulation, Mid Penn and William Penn undertake no obligation to update these forward-looking statements to reflect events or circumstances after the date of this joint proxy statement/prospectus or to reflect the occurrence of unanticipated events. 48

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