Phathom Pharmaceuticals Reports Third Quarter 2025 Financial Results and Provides Business Update

FLORHAM PARK, N.J., Oct. 30, 2025 (GLOBE NEWSWIRE) --  Phathom Pharmaceuticals, Inc. (Nasdaq: PHAT), a biopharmaceutical company focused on developing and commercializing novel treatments for gastrointestinal (GI) diseases, today reported financial results for the third quarter ended September 30, 2025, and provided a business update.

“Our performance this quarter reinforces our belief in the strength of our GI-focused call strategy and reflects disciplined execution across the business,” said Steve Basta, President and Chief Executive Officer of Phathom. “Momentum for VOQUEZNA tablets continues to build as we deepen engagement with gastroenterologists. In the third quarter we grew revenues, reduced expenses, and reduced cash usage in line with our previously communicated plan. With strong commercial performance this quarter, continued expense discipline, and an experienced leadership team in place, we are advancing toward our goal of becoming a leader in GI.”

Conference Call and WebcastPhathom will host a conference call and webcast to discuss its third quarter 2025 financial results and business highlights today, October 30, 2025, at 8:00 a.m. EDT. A live webcast will be available on the investors page of Phathom’s website underEvents & Presentations. A replay of the webcast will be available following the completion of the call and will be archived for up to 90 days.

Non-GAAP Financial MeasuresThis press release includes financial results prepared in accordance with accounting principles generally accepted in the United States (GAAP), and also certain non-GAAP financial measures. In particular, Phathom has provided non-GAAP adjusted operating expense, net loss and adjusted net loss per share, adjusted to exclude the items below. Non-GAAP financial measures are not an alternative for financial measures prepared in accordance with GAAP. However, Phathom believes the presentation of non-GAAP adjusted operating expense, net loss and adjusted net loss per share, when viewed in conjunction with GAAP results, provides investors with a more meaningful understanding of ongoing operating performance. These measures exclude (i) non-cash stock-based compensation, which is substantially dependent on changes in the market price of common shares, (ii) interest expense related to the accounting for our revenue interest financing liability, which are in excess of the actual interest owed, and (iii) interest expense related to the amortization of debt discount on our term loan.

Phathom believes the presentation of these non-GAAP financial measures provides useful information to management and investors regarding Phathom's results of operations. When GAAP financial measures are viewed in conjunction with these non-GAAP financial measures, investors are provided with a more meaningful understanding of Phathom's ongoing operating performance and are better able to compare Phathom's performance between periods. In addition, these non-GAAP financial measures are among those indicators Phathom uses as a basis for evaluating performance, and planning and forecasting future periods. These non-GAAP financial measures are not intended to be considered in isolation or as a substitute for GAAP financial measures. A reconciliation between these non-GAAP measures and the most directly comparable GAAP measures is provided later in this press release.

About Phathom Pharmaceuticals, Inc.Phathom Pharmaceuticals is a biopharmaceutical company focused on the development and commercialization of novel treatments for gastrointestinal diseases. Phathom has in-licensed the exclusive rights to vonoprazan, a first-in-class potassium-competitive acid blocker (PCAB) that is currently marketed in the United States as VOQUEZNA® (vonoprazan) tablets for the relief of heartburn associated with Non-Erosive GERD in adults, the healing and maintenance of healing of Erosive GERD in adults and relief of associated heartburn, in addition to VOQUEZNA® TRIPLE PAK® (vonoprazan tablets, amoxicillin capsules, clarithromycin tablets) and VOQUEZNA® DUAL PAK® (vonoprazan tablets, amoxicillin capsules) for the treatment ofH. pyloriinfection in adults. For more information about Phathom, visit the company’s website atwww.phathompharma.comand follow onLinkedInandX.Forward-Looking StatementsThis press release contains forward-looking statements, including without limitation statements regarding: our plans, expectations and goals for commercialization of VOQUEZNA, our belief in our commercialization strategy and potential results of our commercialization efforts; our expectations, including guidance, regarding operating expenses, revenues, growth, and cash to fund operations; our expectations with respect to achieving profitability and timing; our expectations regarding non-patent regulatory exclusivity and the potential timeline for entry of a generic drug; our development plans and potential timelines; our business strategy, goals, mission and vision, including our goal to be a leader in GI; and our other expectations, forecasts and predictions as to future performance, results and likelihood of success. These statements involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements, including the risk that: we may not be able to successfully commercialize VOQUEZNA or to achieve results, revenues or growth at the levels we expect; the market opportunity for VOQUEZNA may be significantly smaller than our expectations; market acceptance for VOQUEZNA from healthcare professionals, patients, and payors in the indications for which it is approved may be significantly lower than we anticipate; we may encounter coverage, reimbursement, market access, or other issues in the course of our commercialization efforts that may negatively impact our efforts and results; the unmet need for new treatment options in GERD may not be as high as we anticipate; estimates of the number of patients with the disorders for which VOQUEZNA is approved, now or in the future, and our estimates of potential market size may not be accurate; our decisions as to where to allocate our resources and focus our efforts may not lead to the results we expect; we may not seek, achieve or maintain the patent and regulatory exclusivity we expect or that could be available to us and may encounter generic competition sooner than we anticipate; our results may be negatively impacted by the launch of other competitive products; we may experience adverse impact as the result of our dependence on third parties in connection with commercialization, product manufacturing, research and preclinical and clinical testing; we may be negatively impacted by regulatory developments or other governmental actions in the United States, including government healthcare reform; we may encounter unexpected adverse side effects or inadequate efficacy of VOQUEZNA that may limit or impair market acceptance or impair current or future development or regulatory approvals, or may result in recalls, withdrawals or product liability claims; we may not be able to obtain and maintain intellectual property protection important to our business; if we were to breach our license agreement with Takeda for vonoprazan, Takeda might take action, including termination, that would significantly impair our business; we may encounter issues with our ongoing or planned clinical trials, including slower than expected enrollment that affect timing or chances of success; we may receive negative or mixed results from our ongoing or future clinical trials that impact our business, goals or future opportunities; our operating expenses may be higher than we anticipate, including if we decide to engage in activities not currently in our plan or if we face unexpected, or higher than anticipated, expenses, including as the result of unexpected events such as litigation; depending on our results and activities, we may not achieve profitability on the timelines we expect or at all; in the future, we may not have sufficient cash to fund our operations at the levels we expect or to meet our obligations under certain of our agreements or to enable us to achieve profit from operations; we may need to or decide to raise additional capital; we may not be able to raise capital on acceptable terms; and any of the foregoing or other factors may negatively impact our ability to achieve our plans, goals, mission, vision and potential. For additional discussion of these and other risks, see the risk disclosure in our filings with the Securities and Exchange Commission (SEC), including our Annual Report on Form 10-K and any subsequent filings with the SEC. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof, and we undertake no obligation to revise or update this presentation to reflect events or circumstances after the date hereof. All forward-looking statements are qualified in their entirety by this cautionary statement, which is made under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995.

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