EXHIBIT 99.1

July 26, 2017

Press Release

FARMERS NATIONAL BANC CORP. ANNOUNCES

2017 SECOND QUARTER FINANCIAL RESULTS

CANFIELD, Ohio (July 26, 2017) – Farmers National Banc Corp. (Farmers) (NASDAQ: FMNB) today reported financial results for the three months ended June 30, 2017.

Net income for the three months ended June 30, 2017 was $5.7 million, or $0.21 per diluted share, which compares to $5.0 million, or $0.19 per diluted share, for the three months ended June 30, 2016 and $5.8 million or $0.21 per diluted share for the linked quarter. Excluding acquisition expenses net income for the three month period ended June 30, 2017 would have been $5.8 million. Annualized return on average assets and return on average equity were 1.11% and 10.25%, respectively, for the three month period ending June 30, 2017, compared to 1.06% and 9.69% for the same three month period in 2016, and 1.17% and 10.87% for the linked quarter. Farmers’ return on average tangible equity (Non-GAAP) also improved to 12.77% for the quarter ended June 30, 2017 compared to 12.22% for the same quarter in 2016 and 13.54% for the linked quarter.

Net income for the six months ended June 30, 2017 was $11.5 million, or $0.42 per diluted share, compared to $9.8 million or $0.36 per diluted share for the same six month period in 2016. Return on average assets and return on average equity were 1.14% and 10.52%, respectively, for the six months ended June 30, 2017, compared to 1.05% and 9.61% for the same period in 2016. Excluding expenses related to acquisition activities net income for the six month period ended June 30, 2017 would have been $11.6 million or $0.43 per diluted share.

On March 13, 2017, Farmers entered into an agreement and plan of merger with Monitor Bancorp, Inc. (Monitor), the holding company for The Monitor Bank, located in Holmes County in Ohio. This transaction has obtained all regulatory approvals and is expected to close during the third quarter of 2017. This transaction will serve as an entrance into the attractive Holmes County market for Farmers. Monitor has an excellent core deposit base and has been a solid earner with strong asset quality. This transaction will help Farmers continue to grow its market share, balance sheet and earnings. As of December 31, 2016, Monitor had total assets of $43.3 million, which included net loans of $22.3 million and deposits of $37.2 million. For the year ended December 31, 2016, Monitor’s return on average assets and return on average equity were 0.74% and 5.44%, respectively.

Kevin J. Helmick, President and CEO, stated, “ We are looking forward to close our fourth acquisition in the past two years, which further enhances Farmers’ brand and delivers long-term value for our shareholders. We remain focused on our strategic growth plan which has paved the way for the company to reach over $2 billion in assets in 2017. This growth enhances profitability by creating significant economies of scale and improved operational efficiencies. We continue to be encouraged by our organic loan growth, which has increased 11% during the past twelve months, and improvements in our level of noninterest income.”

2017 Second Quarter Financial Highlights

Total loans were $1.51 billion at June 30, 2017, compared to $1.36 billion at June 30, 2016, representing an increase of 10.8%. The increase in loans is a direct result of Farmers’ focus on loan growth utilizing a talented lending and credit team, while adhering to a sound underwriting discipline. The increase in loans has occurred across each of the major loan categories. Loans now comprise 77.6% of the Bank’s average earning assets for the quarter ended June 30, 2017, an improvement compared to 76.2% for the same period in 2016. This improvement, along with the growth in earning assets, has resulted in an 11% increase in tax equated loan income in the second quarter of 2017 compared to the same quarter in 2016.

Non-performing assets to total assets remain at a low level, currently at 0.32%. Early stage delinquencies also continue to remain at low levels, at $7.1 million, or 0.47% of total loans, at June 30, 2017. Net charge-offs for the current quarter were $523 thousand, compared to $660 thousand in the same quarter in 2016 and total net charge-offs as a percentage of average net loans outstanding is only 0.14% for the quarter ended June 30, 2017. Lending to the energy sector is insignificant and less than 1% of the loan portfolio.

The net interest margin for the three months ended June 30, 2017 was 4.05%, a 1 basis point decrease from the quarter ended June 30, 2016. In comparing the first quarter of 2017 to the same period in 2016, asset yields increased 11 basis points, while the cost of interest-bearing liabilities increased 14 basis points. The net interest margin is impacted by the additional accretion as a result of the discounted loan portfolios acquired in the NBOH and Tri-State mergers, which increased the net interest margin by 2 and 9 basis points for the quarters ended June 30, 2017 and 2016, respectively.

Noninterest income increased 5.5% to $6.1 million for the quarter ended June 30, 2017 compared to $5.7 million in 2016. Gains on the sale of mortgage loans increased $351 thousand, or 65% in the current year’s quarter compared to the same quarter in 2016. Insurance agency commissions increased $379 thousand in comparing the same two quarters due mainly to the acquisition of the Bowers Group that closed on June 1, 2016. Debit card interchange fees increased $179 thousand or 27.3% in comparing the second quarter of 2017 to the same quarter in 2016. Other operating income is down $286 thousand in June 30, 2017 compared to the same quarter in 2016, mainly as a result of a $262 thousand gain on the sale of land that was recognized during the second quarter of 2016.

Farmers has remained committed to managing the level of noninterest expenses. Total noninterest expenses for the second quarter of 2017 increased to $15.8 million compared to $14.8 million in the same quarter in 2016, primarily as a result of an increase in salaries and employee benefits of $1.1 million, offset by a $156 thousand decrease in other operating expenses and a $120 thousand decrease in merger related costs. There were also $155 thousand of litigation settlement expense in the current quarter ended June 30, 2017 compared to none in the same quarter in 2016. It is important to note that annualized noninterest expenses measured as a percentage of quarterly average assets decreased from 3.13% in the second quarter of 2016 to 3.08% in the second quarter of 2017.

The efficiency ratio for the quarter ended June 30, 2017 improved to 60.8% compared to 62.6% for the same quarter in 2016. The main factors leading to this improvement were the increase in net interest income and noninterest income, the decrease in merger related costs, along with the stabilized level of noninterest expenses relative to average assets as explained in the preceding paragraphs.

2017 Outlook

Mr. Helmick added, “We are encouraged by the promising start to 2017 in our financial results. We will focus our energy on the seamless integration of our newly acquired bank and customers and we remain committed to the businesses and families we serve and to our community banking approach and culture.”

Founded in 1887, Farmers National Banc Corp. is a diversified financial services company headquartered in Canfield, Ohio, with $2 billion in banking assets and $1 billion in trust assets. Farmers National Banc Corp.’s wholly-owned subsidiaries are comprised of The Farmers National Bank of Canfield, a full-service national bank engaged in commercial and retail banking with 38 banking locations in Mahoning, Trumbull, Columbiana, Stark, Wayne, Medina and Cuyahoga Counties in Ohio and Beaver County in Pennsylvania, Farmers Trust Company, which operates three trust offices and offers services in the same geographic markets, and National Associates, Inc. Farmers National Insurance, LLC and Bowers Insurance Agency, Inc., wholly-owned subsidiaries of The Farmers National Bank of Canfield, offer a variety of insurance products.

Non-GAAP Disclosure

This press release includes disclosures of Farmers’ tangible common equity ratio, return on average tangible assets, return on average tangible equity and net income excluding costs related to acquisition activities and litigation settlement expenses, which are financial measures not prepared in accordance with generally accepted accounting principles in the United States (GAAP). A non-GAAP financial measure is a numerical measure of historical or future financial performance, financial position or cash flows that excludes or includes amounts that are required to be disclosed by GAAP. Farmers believes that these non-GAAP financial measures provide both management and investors a more complete understanding of the underlying operational results and trends and Farmers’ marketplace performance. The presentation of this additional information is not meant to be considered in isolation or as a substitute for the numbers prepared in accordance with GAAP. The reconciliations of non-GAAP financial measures are included in the tables following Consolidated Financial Highlights below.

Forward-Looking Statements

This earnings release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including statements about Farmers’ financial condition, results of operations, asset quality trends and profitability. Forward-looking statements are not historical facts but instead represent only management’s current expectations and forecasts regarding future events, many of which, by their nature, are inherently uncertain and outside of Farmers’ control. Forward-looking statements are preceded by terms such as “expects,” “believes,” “anticipates,” “intends” and similar expressions, as well as any statements related to future expectations of performance or conditional verbs, such as “will,” “would,” “should,” “could” or “may.” Farmers’ actual results and financial condition may differ, possibly materially, from the anticipated results and financial condition indicated in these forward-looking statements. Factors that could cause Farmers’ actual results to differ materially from those described in the forward-looking statements can be found in Farmers’ Annual Report on Form 10-K for the year ended December 31, 2016, which has been filed with the Securities and Exchange Commission (SEC) and is available on Farmers’ website (www.farmersbankgroup.com) and on the SEC’s website (www.sec.gov). Forward-looking statements are not guarantees of future performance and should not be relied upon as representing management’s views as of any subsequent date. Farmers does not undertake any obligation to update the forward-looking statements to reflect the impact of circumstances or events that may arise after the date of the forward-looking statements.

Farmers National Banc Corp. and Subsidiaries

Consolidated Financial Highlights

(Amounts in thousands, except per share results) Unaudited

Consolidated Statements of Income

Reconciliation of Common Stockholders’ Equity to Tangible Common Equity

Reconciliation of Total Assets to Tangible Assets

Reconciliation of Net Income, Excluding Costs Related to Acquisition Activities

Reconciliation of Return on Average Assets and Average Equity, Excluding Acquisition Costs

Average Balance Sheets and Related Yields and Rates

(Dollar Amounts in Thousands)