Exhibit 99.1

15985 East High Street

P. O. Box 35

Middlefield, Ohio 44062

Phone: 440/632-1666 FAX: 440/632-1700

www.middlefieldbank.bank

Middlefield Banc Corp. Reports 2025 Three-Month Financial Results

MIDDLEFIELD, OHIO, April 24, 2025  ◆◆◆◆ Middlefield Banc Corp. (NASDAQ: MBCN) today reported financial results for the three months ended March 31, 2025.

2025 Three-Month Financial Highlights (on a year-over-year basis):

“The first quarter of 2025 was a strong period of growth, profitability and value creation for Middlefield,” stated Ronald L. Zimmerly, Jr., President and Chief Executive Officer. “Total loans increased by 4% year-over-year to a record $1.55 billion, driven by stable economic trends within our Ohio markets, the strength of our balance sheet, and the continued execution of our strategic initiatives.  The 15-basis point expansion in our net interest margin is encouraging, reflecting our disciplined approach to pricing and ongoing efforts to reduce our cost of funds.  As a result, net income expanded by 15.9% year-over-year to $4.8 million, delivering a strong return on average assets of 1.04% and supporting a 5.5% increase in tangible book value per share⁽¹⁾, which reached $21.29 as of March 31, 2025.”  ⁽¹⁾See non-GAAP reconciliation under the section “GAAP to Non-GAAP Reconciliations”.

“During the quarter, we made significant upgrades to our infrastructure to support our multi-year technology road map. Additional investments in our physical footprint and back-office capabilities are planned throughout the year as we continue to strengthen Middlefield’s platform and support our long-term growth. We believe 2025 will be another good year of profitable expansion, reflecting our commitment to disciplined underwriting, community banking values, and ongoing reinvestment in the business,” concluded Mr. Zimmerly.

Income Statement

Net interest income for the three months ended March 31, 2025, increased $1.1 million to $16.1 million, compared to $15.0 million for the same period last year. The increase was driven by strong loan growth and the impact of rate cuts on our short-term borrowings. The net interest margin for the three months ended March 31, 2025, was 3.69%, compared to 3.54% last year. 

For the three months ended March 31, 2025, noninterest income increased $148,000 to $1.9 million, compared to $1.8 million for the same period in 2024.

Noninterest expense for the three months ended March 31, 2025, was $12.2 million, compared to $12.0 million for the same period in 2024. 

Net income for the three months ended March 31, 2025, was $4.8 million, or $0.60 per diluted share, compared to $4.2 million, or $0.51 per diluted share, for the same period last year. 

For the three months ended March 31, 2025, pre-tax, pre-provision net income was $5.8 million, compared to $4.8 million for the same period last year. (See non-GAAP reconciliation under the section “GAAP to Non-GAAP Reconciliations”.)

Balance Sheet

Total assets at March 31, 2025, increased 3.9% to $1.89 billion, compared to $1.82 billion at March 31, 2024. Total loans at March 31, 2025, were $1.55 billion, compared to $1.49 billion at March 31, 2024. The 4.0% year-over-year increase in total loans was primarily due to higher residential real estate loans, home equity lines of credit, and non-owner occupied loans, partially offset by a reduction in construction and other loans.

The investment securities available-for-sale portfolio was $165.0 million at March 31, 2025, compared with $167.9 million at March 31, 2024.

Total liabilities at March 31, 2025, increased 3.9% to $1.67 billion, compared to $1.61 billion at March 31, 2024. Total deposits at March 31, 2025, were $1.54 billion, compared to $1.45 billion at March 31, 2024. The 6.4% year-over-year increase in deposits was primarily due to growth in money market and interest-bearing demand deposits, partially offset by declines in time and noninterest-bearing demand deposit accounts. Noninterest-bearing demand deposits were 24.0% of total deposits at March 31, 2025, compared to 27.0% at March 31, 2024. At March 31, 2025, the Company had brokered deposits of $92.4 million, compared to $90.4 million at March 31, 2024.

Michael C. Ranttila, Chief Financial Officer, stated, “We remain focused on proactively managing our funding sources to support loan growth, while optimizing our cost of funds. At March 31, 2025, we reduced our balance of Federal Home Loan Bank advances by $62.4 million from December 31, 2024, and ended the first quarter with $346.9 million in additional borrowing capacity. The combination of high levels of potentially liquid assets, cash flows from operations, and additional borrowing capacity continues to provide us with excellent liquidity levels to support our long-term growth strategies and our legacy of returning excess capital to shareholders.”

Middlefield's CRE portfolio included the following categories at March 31, 2025:

Stockholders' Equity and Dividends

At March 31, 2025, stockholders' equity was $213.8 million, compared to $205.6 million at March 31, 2024. The 4.0% year-over-year increase in stockholders' equity was primarily from higher retained earnings, partially offset by an increase in the unrealized losses on the available-for-sale investment portfolio. On a per-share basis, shareholders' equity at March 31, 2025, was $26.46, compared to $25.48 at March 31, 2024.

At March 31, 2025, tangible stockholders' equity⁽¹⁾ was $172.1 million, compared to $162.8 million at March 31, 2024. On a per-share basis, tangible stockholders' equity⁽¹⁾ was $21.29 at March 31, 2025, compared to $20.18 at March 31, 2024. ⁽¹⁾See non-GAAP reconciliation under the section “GAAP to Non-GAAP Reconciliations”.

For the three months ended March 31, 2025, the Company declared cash dividends of $0.21 per share, totaling $1.7 million. Beginning in the first quarter of 2025, the Company increased the quarterly cash dividend by $0.01 or 5% from the previous quarter's $0.20 per share cash dividend.  

For the three months ended March 31, 2025, the Company did not repurchase any shares of its common stock.  The Company repurchased 43,858 shares of its common stock, at an average price of $24.00 per share during the same period in 2024. 

At March 31, 2025, the Company's equity-to-assets ratio was 11.32%, compared to 11.32% at March 31, 2024.

Asset Quality

For the 2025 first quarter, the Company recorded a provision for credit losses of $95,000, compared to a recovery of credit losses of $136,000 for the same period of 2024.  

Net recoveries were $209,000, or (0.06%) of average loans, annualized, for the 2025 first quarter, compared to net recoveries of $68,000, or (0.02%) of average loans, annualized, for the same period of 2024.      

Nonperforming loans at March 31, 2025, were $29.6 million, compared to $10.8 million at March 31, 2024. The increase in nonperforming assets is primarily the result of a $12.4 million loan moved to nonaccrual in the 2024 third quarter. The allowance for credit losses at March 31, 2025, stood at $22.4 million, or 1.44% of total loans, compared to $21.1 million, or 1.41% of total loans at March 31, 2024. The increase in the allowance for credit losses was mainly from changes in projected loss drivers, prepayment assumptions, curtailment expectations over the reasonable and supportable forecast period, and geographic footprint of unemployment data, as well as an overall increase in total loans.

Mr. Ranttila continued, “Asset quality remains stable, with nonperforming assets to total assets of 1.56% at March 31, 2025, compared to 1.62% at December 31, 2024.  Nonperforming assets at March 31, 2025, included two relationships that moved into nonaccrual status in the second quarter of 2024 and one that moved into nonaccrual status in the third quarter of 2024.  We remain well reserved for potential credit losses with an allowance for credit losses to total loans of 1.44% at March 31, 2025, compared to 1.48% at December 31, 2024, and 1.41% at March 31, 2024.  We continue to expect stable economic activity across our Central, Western, and Northeast Ohio markets that will support loan demand and asset quality throughout 2025.” 

About Middlefield Banc Corp.

Middlefield Banc Corp., headquartered in Middlefield, Ohio, is the Bank holding Company of The Middlefield Banking Company, with total assets of $1.89 billion at March 31, 2025. The Bank operates 21 full-service banking centers and an LPL Financial® brokerage office serving Ada, Beachwood, Bellefontaine, Chardon, Cortland, Dublin, Garrettsville, Kenton, Mantua, Marysville, Middlefield, Newbury, Orwell, Plain City, Powell, Solon, Sunbury, Twinsburg, and Westerville. The Bank also operates a Loan Production Office in Mentor, Ohio.

Additional information is available at www.middlefieldbank.bank

NON-GAAP FINANCIAL MEASURES

This press release includes disclosure of Middlefield Banc Corp.'s tangible book value per share, return on average tangible equity, and pre-tax, pre-provision for loan losses income, 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 required to be disclosed by GAAP. Middlefield Banc Corp. believes that these non-GAAP financial measures provide both management and investors a more complete understanding of the underlying operational results and trends and Middlefield Banc Corp.'s 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 following Consolidated Financial Highlights tables below.

FORWARD-LOOKING STATEMENTS

This press release of Middlefield Banc Corp. and the reports Middlefield Banc Corp. files with the Securities and Exchange Commission often contain "forward-looking statements" relating to present or future trends or factors affecting the banking industry and, specifically, the financial operations, markets and products of Middlefield Banc Corp. These forward-looking statements involve certain risks and uncertainties. There are several important factors that could cause Middlefield Banc Corp.'s future results to differ materially from historical performance or projected performance. These factors include, but are not limited to: (1) a significant increase in competitive pressures among financial institutions; (2) changes in the interest rate environment that may reduce interest margins; (3) changes in prepayment speeds, charge-offs and loan loss provisions; (4) less favorable than expected general economic conditions; (5) legislative or regulatory changes that may adversely affect businesses in which Middlefield Banc Corp. is engaged; (6) technological issues which may adversely affect Middlefield Banc Corp.'s financial operations or customers; (7) changes in the securities markets; or (8) risk factors mentioned in the reports and registration statements Middlefield Banc Corp. files with the Securities and Exchange Commission. Middlefield Banc Corp. undertakes no obligation to release revisions to these forward-looking statements or to reflect events or circumstances after the date of this press release.

MIDDLEFIELD BANC CORP.

Consolidated Selected Financial Highlights

(Dollar amounts in thousands, unaudited)

MIDDLEFIELD BANC CORP.

Consolidated Selected Financial Highlights

(Dollar amounts in thousands, unaudited)

MIDDLEFIELD BANC CORP.

Consolidated Selected Financial Highlights

(Dollar amounts in thousands, except per share and share amounts, unaudited)

MIDDLEFIELD BANC CORP.

Consolidated Selected Financial Highlights

(unaudited)

MIDDLEFIELD BANC CORP.

GAAP to Non-GAAP Reconciliations

MIDDLEFIELD BANC CORP.

Average Balance Sheets

(Dollar amounts in thousands, unaudited)