Aligos Therapeutics, Inc.

Forward-Looking Statement

This press release contains forward-looking statements within the meaning of the U.S. Private Securities Litigation Reform Act of 1995. Any statements in this press release that are not historical facts may be considered “forward-looking statements,” including without limitation, statements with respect to the expected data releases and data presentations for the Company’s ASO program in HBV, and timing of data readouts for the pevifoscorvir sodium B-SUPREME study; potential success of the Company’s development programs, including timing of the Company’s anticipated ASO clinical trials; the potential for ALG-170675 to reduce ASO toxicity and improve ASO liver to kidney ratios; the potential additive to synergistic effects of ALG-170675 when combined with a CAM-E; statements about the Company’s plans to conduct a Phase 2 study on ALG-170675 in 2028, and whether it may include combination therapy (e.g. pevifoscorvir sodium); statements regarding potential financial milestones being met and future royalties being earned by Aligos under the Amoytop license, and regarding Amoytop’s success in developing the ASO and/or pevifoscorvir sodium in Greater China, including statements regarding timing and design of Amoytop’s anticipated clinical trials; and the company’s expectation that its cash, cash equivalents and investments provide sufficient funding of planned operations into the fourth quarter of 2026. Forward-looking statements are typically, but not always, identified by the use of words such as “may,” “will,” “would,” “believe,” “intend,” “plan,” “anticipate,” “estimate,” “expect,” and other similar terminology indicating future results. Such forward looking statements are subject to substantial risks and uncertainties that could cause our development programs, future results, performance, or achievements to differ materially from those anticipated in the forward-looking statements. Such risks and uncertainties include, without limitation, risks and uncertainties inherent in the drug development process, including Aligos’ clinical-stage of development, the process of designing and conducting clinical trials, the regulatory approval processes, the timing of regulatory filings, the challenges associated with manufacturing drug products, Aligos’ ability to successfully establish, protect and defend its intellectual property, other matters that could affect the sufficiency of Aligos’ capital resources to fund operations, reliance on third parties for manufacturing and development efforts, reliance on collaborators to succeed in their development efforts and to comply with their contractual obligations, changes in the competitive landscape and the impact of global events and other macroeconomic conditions on Aligos’ business. For a further description of the risks and uncertainties that could cause actual results to differ from those anticipated in these forward-looking statements, as well as risks relating to the business of Aligos in general, see Aligos’ Quarterly Report on Form 10-Q to be filed with the Securities and Exchange Commission on August 6, 2026 and Aligos’ Annual Report on Form 10-K filed with the Securities and Exchange Commission on March 5, 2026 and its future periodic reports to be filed or submitted with the Securities and Exchange Commission. Except as required by law, Aligos undertakes no obligation to update any forward-looking statements to reflect new information, events or circumstances, or to reflect the occurrence of unanticipated events.

Investor Contact

Jordyn Tarazi

Vice President, Investor Relations & Corporate Communications

+1 (650) 910-0427

jtarazi@aligos.com

(1) The condensed consolidated balance sheet as of December 31, 2025 has been derived from the audited consolidated financial statements at that date included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025.