TIMBERLAND BANCORP INC

Evaluation of Disclosure Controls and Procedures

An evaluation of the Company’s disclosure controls and procedures (as defined in Rule 13a-15(e) of the Securities Exchange Act of 1934 (the “Exchange Act”)) was carried out under the supervision and with the participation of the Company’s Chief Executive Officer (principal executive officer), Chief Financial Officer (principal financial officer) and several other members of the Company’s senior management as of the end of the period covered by this annual report. In designing disclosure controls and procedures, management is required to exercise judgment in evaluating the cost-benefit relationship of possible controls and procedures. The design of any disclosure controls and procedures is based, in part, on certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated objectives under all potential future conditions. The Company’s Chief Executive Officer and Chief Financial Officer concluded that as of September 30, 2025 the Company’s disclosure controls and procedures were effective in ensuring that the information required to be disclosed by the Company in the reports it files or submits under the Exchange Act is (i) accumulated and communicated to the Company’s management (including the Chief Executive Officer and Chief Financial Officer) in a timely manner, and (ii) recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms.

Management’s Report on Internal Control Over Financial Reporting

Management of the Company is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rule 13(a)-15(f) of the Exchange Act. The Company's internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles.

To comply with the requirements of Section 404 of the Sarbanes-Oxley Act of 2002, the Company designed and implemented a structured and comprehensive assessment process to evaluate its internal control over financial reporting across the enterprise. The assessment of the effectiveness of the Company's internal control over financial reporting was based on criteria established in Internal Control-Integrated Framework (2013)issued by the Committee of Sponsoring Organizations of the Treadway Commission.

Based in its assessment, management has concluded that the Company's internal control over financial reporting was effective as of September 30. 2025

A control procedure, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Because of the inherent limitations in all control procedures, no evaluation of controls can provide absolute assurance that all control issues or instances of fraud, if any, within the Company will be detected. As a result of these inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate due to changes in conditions or that the degree of compliance with established policies and procedures may deteriorate over time.

Delap LLP, the independent registered public accounting firm that audited the Company’s Consolidated Financial Statements included in this Annual Report on Form 10-K, has also issued an audit report on the effectiveness of the Company’s internal control over financial reporting as of September 30, 2025. The report, which expresses an unqualified opinion on the effectiveness of the Company’s internal control over financial reporting as of September 30, 2025, is included in the “Report of Independent Registered Public Accounting Firm” contained under “Item 8 – Financial Statements and Supplementary Data” of this Form 10-K.

The management of the Company has also assessed the Company's compliance with the Federal laws and regulations pertaining to insider loans and the Federal and, if applicable, State laws and regulations pertaining to dividend restrictions during the fiscal year that ended on September 30, 2025. Based on this assessment, management concluded that the Company complied with the Federal laws and regulations pertaining to insider loans and the Federal and, if applicable, State laws and regulations.

Changes in Internal Control

There were no changes made to our internal control over financial reporting (as defined in 13a-15(f) of the Exchange Act) that occurred during the quarter ended September 30, 2025, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. The Company continued to implement suggestions from its internal auditor and independent auditor on ways to strengthen existing controls.