Additional Proxy Soliciting Materials - Form DEFA14A

To learn more, visit: TerritorialandHopeCombination.com 100% tax-free merger provides shareholders with ~25% premium to Territorial's closing stock price just prior to merger announcement1 1000% higher dividend than Territorial's standalone dividend (from $0.01 to $0.11 per share)2 Significant value creation upside from being invested in a larger, more diversified regional bank with exciting growth opportunities Preserves Territorial's unwavering commitment to Hawai'i with local branches and all other operations continuing to be led by local teams DEAR FELLOW TERRITORIAL BANCORP SHAREHOLDERS, On November 6, 2024, Territorial Bancorp will hold a Special Meeting of Stockholders to vote on our merger with Hope Bancorp. This combination delivers compelling value to Territorial shareholders and significant benefits to our employees, customers and local communities across Hawai'i. Time is short. The Territorial Board of Directors urges shareholders to vote FOR the transaction with Hope Bancorp TODAY. Allan S. Kitagawa Chairman of the Board, President and Chief Executive Officer October 24, 2024 +

Please take a moment to vote FOR the proposals set forth on the enclosed proxy card by Internet, telephone toll-free or by signing, dating and returning the enclosed proxy card or voting instruction form. Vote well in advance of the Special Meeting on November 6, 2024 at 8:30 a.m. Hawai'i Time. If you have any questions or need assistance with voting your shares, please contact: Call toll-free: (888) 742-1305 Banks and brokers: (516) 933-3100 Email: [email protected] Your Vote Is Important, No Matter How Many or How Few Shares You Own! 1. Based on Territorial and Hope Bancorp's closing prices as of April 26, 2024 (day before merger announcement) 2. Based on 0.8048 fixed exchange ratio and Hope Bancorp's $0.14 current per share dividend Forward Looking Statements & Additional Information Some statements in this communication may constitute forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements relate to, among other things, expectations regarding the low-cost core deposit base, diversification of the loan portfolio, expansion of market share, capital to support growth, strengthened opportunities, enhanced value, geographic expansion, and statements about the proposed transaction being immediately accretive. Forward-looking state-ments include, but are not limited to, statements preceded by, followed by or that include the words "will," "believes," "expects," "anticipates," "intends," "plans," "estimates" or similar expressions. With respect to any such forward-looking statements, Territorial Bancorp claims the protection provided for in the Private Securities Litigation Reform Act of 1995. These statements involve risks and uncertainties. Hope Bancorp's actual results, performance or achievements may differ significantly from the results, performance or achievements expressed or implied in any forward-looking statements. The closing of the proposed transaction is subject to regulatory approvals, the approval of Territorial Bancorp stockholders, and other customary closing conditions. There is no assurance that such conditions will be met or that the proposed merger will be consummated within the expected time frame, or at all. If the transaction is consummated, factors that may cause actual outcomes to differ from what is expressed or forecasted in these forward-looking statements include, among things: difficulties and delays in integrating Hope Bancorp and Territorial Bancorp and achieving anticipated synergies, cost savings and other benefits from the transaction; higher than anticipated transaction costs; deposit attrition, operating costs, customer loss and business disruption following the merger, including difficulties in maintaining relationships with employees and customers, may be greater than expected; and required governmental approvals of the merger may not be obtained on its proposed terms and schedule, or without regulatory constraints that may limit growth. Other risks and uncertainties include, but are not limited to: possible further deterioration in economic conditions in Hope Bancorp's or Territorial Bancorp's areas of operation or elsewhere; interest rate risk associated with volatile interest rates and related asset-liability matching risk; liquidity risks; risk of significant non-earning assets, and net credit losses that could occur, particularly in times of weak economic conditions or times of rising interest rates; the failure of or changes to assumptions and estimates underlying Hope Bancorp's or Territorial Bancorp's allowances for credit losses; potential increases in deposit insurance assessments and regulatory risks associated with current and future regulations; the outcome of any legal proceedings that may be instituted against Hope Bancorp or Territorial Bancorp; the risk that any announcements relating to the proposed transaction could have adverse effects on the market price of the common stock of either or both parties to the proposed transaction; and diversion of management's attention from ongoing business operations and opportunities. For additional information concerning these and other risk factors, see Hope Bancorp's and Territorial Bancorp's most recent Annual Reports on Form 10-K. Hope Bancorp and Territorial Bancorp do not undertake, and specifically disclaim any obligation, to update any forward-looking statements to reflect the occurrence of events or circumstances after the date of such statements except as required by law. Additional Information about the Merger with Hope Bancorp and Where to Find It In connection with the proposed Hope Merger, Hope has filed with the U.S. Securities and Exchange Commission (the "SEC") a Registration Statement on Form S-4, containing the Proxy Prospectus, which has been mailed or otherwise delivered to Territorial's stockholders on or about August 29, 2024, as supplemented September 12, 2024. Hope and Territorial may file additional relevant materials with the SEC. INVESTORS AND STOCKHOLDERS ARE URGED TO READ THE PROXY PROSPECTUS, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR FURNISHED OR WILL BE FILED OR FURNISHED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY BECAUSE THEY CONTAIN OR WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION AND RELATED MATTERS. You may obtain any of the documents filed with or furnished to the SEC by Hope or Territorial at no cost from the SEC's website at www.sec.gov.