Material Event Form 8 K

Item 8.01 Other Events

On October 3, 2024, Trevi Therapeutics, Inc. (the "Company") announced the following updates on its clinical development programs.

The Company's Phase 2b CORAL trial for the treatment of chronic cough in patients with idiopathic pulmonary fibrosis has enrolled 50% of the targeted study enrollment, which is the number of patients needed for the pre-specified sample size re-estimation ("SSRE"). The SSRE will be performed once the last of these patients complete the six weeks of treatment. The outcome of the SSRE result is expected in December 2024. The three potential SSRE outcomes are: maintain current sample size (N=160), upsize within a pre-specified range, or evaluate for futility. Assuming no adjustments are made to the sample size, topline results are expected in the first half of 2025.

The Company's Human Abuse Potential study completed dosing. Topline results are expected in December 2024.

The Company's Phase 2a RIVER trial for the treatment of refractory chronic cough has enrolled the planned sample size but remains open to allow for additional enrollment in both arms to approximate the stratification targets. Topline results are now expected in the first quarter of 2025.

Forward-Looking Statements

Statements contained in this current report on Form 8-K regarding matters that are not historical facts are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements are subject to risks and uncertainties and actual results may differ materially from those expressed or implied by such forward-looking statements. Such statements include, but are not limited to, statements regarding the Company's business plans and objectives, including future plans or expectations for Haduvio and plans and timing with respect to clinical trials, and other statements containing the words "believes," "anticipates," "plans," "expects," and similar expressions. Risks that contribute to the uncertain nature of the forward-looking statements include: uncertainties regarding the success and timing of the Company's product candidate development activities, including its ongoing clinical trials; the risk that positive data from a clinical trial may not necessarily be predictive of the results of later clinical trials in the same or a different indication; uncertainties regarding the Company's ability to execute on its strategy; uncertainties with respect to regulatory authorities' views as to the data from the Company's clinical trials and next steps in the development path for Haduvio in the United States and foreign countries, uncertainties inherent in estimating the Company's cash runway, future expenses and other financial results, including the Company's ability to fund future operations, including clinical trials, as well as other risks and uncertainties set forth in the quarterly report on Form 10-Q for the quarter ended June 30, 2024 filed with the Securities and Exchange Commission and in subsequent filings with the Securities and Exchange Commission. All forward-looking statements contained in this current report on Form 8-K speak only as of the date on which they were made. The Company undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made.