Filed by Hanmi Financial Corporation

Pursuant to Rule 425

under the Securities Act of 1933 and

deemed filed pursuant to Rule 14a-12 under

the Securities Exchange Act of 1934

Subject Company: SWNB Bancorp, Inc. (Commission File No.: 000-30421)

The following is a transcript of a conference call that was conducted on May 21, 2018.

Additional Information and Where to Find It

This communication is being made in respect of the proposed merger between Hanmi Financial Corporation (“Hanmi”) and SWNB Bancorp, Inc. (“SWNB”). This communication 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.

In connection with the proposed transaction, Hanmi intends to file a registration statement on Form S-4 with the SEC, which will include a proxy statement of SWNB and a prospectus of Hanmi, and Hanmi and SWNB will file other documents regarding the proposed transaction with the SEC. Before making any voting or investment decision, investors and security holders of SWNB are urged to carefully read the entire registration statement and proxy statement/prospectus, when they become available, as well as any amendments or supplements to these documents, because they will contain important information about the proposed transaction. The documents filed by Hanmi with the SEC may be obtained free of charge at the SEC’s website at www.sec.gov. In addition, the documents filed by the Company may be obtained free of charge at its website at www.hanmi.com or by contacting Hanmi Financial Corporation, 3660 Wilshire Boulevard, Penthouse Suite A, Los Angeles, CA 90010, Attention: Richard Pimentel, Corporate Finance Officer, telephone (213) 427-3191.

Hanmi and SWNB and certain of their directors and executive officers may be deemed to be participants in the solicitation of proxies of SWNB’s shareholders in connection with the proposed transaction. Information about the directors and executive officers of Hanmi and their ownership of Hanmi common stock is set forth in the proxy statement for Hanmi’s 2018 Annual Meeting of Shareholders, as filed with the SEC on Schedule 14A on April 13, 2018. Additional information regarding the interests of those participants and other persons who may be deemed participants in the transaction may be obtained by reading the proxy statement/prospectus regarding the proposed merger when it becomes available. Free copies of this document may be obtained as described in the preceding paragraph.