FARMERS NATIONAL BANC CORP /OH/

proxy statement/prospectus of Farmers and Middlefield (the “joint proxy statement/ prospectus”). The Registration Statement was declared effective on December 15, 2025, and Farmers has filed or may file other documents regarding the Merger with the SEC. The joint proxy statement/prospectus was mailed to Farmers’ and Middlefield’s shareholders seeking certain approvals related to the Merger. This press release does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval, nor shall there be any sale of securities in any jurisdiction in which the offer, solicitation or sale is unlawful before registration or qualification of the securities under the securities laws of the jurisdiction. No offer of securities shall be made except by means of a prospectus satisfying the requirements of Section 10 of the Securities Act of 1933, as amended. This document is not a substitute for the joint proxy statement/prospectus or for any other document that Farmers has filed or may file with the SEC in connection with the Merger.

INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE JOINT PROXY STATEMENT/PROSPECTUS AND ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY BECAUSE THEY CONTAIN AND THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT FARMERS, MIDDLEFIELD, THE MERGER AND RELATED MATTERS THAT SHAREHOLDERS SHOULD CONSIDER BEFORE MAKING ANY DECISION REGARDING THE MERGER.

The respective directors and executive officers of Farmers and Middlefield and other persons may be deemed to be participants in the solicitation of proxies from Farmers and Middlefield shareholders with respect to the Merger. Information regarding the directors of Farmers is available in its proxy statement filed with the SEC on March 18, 2025 in connection with its 2025