Financial Data and Key Metrics Changes - The company reported a significant year-over-year total revenue growth of 22%, with full-year 2025 revenues of $407.3 million, compared to $333.6 million in 2024 [30] - XPHOZAH revenues grew to $274.2 million, an increase of 73% compared to the full year of 2024 [31] - The net loss for 2025 was $61.6 million, or $0.26 per share, compared to a net loss of $39.1 million, or $0.17 per share, for 2024 [33] Business Line Data and Key Metrics Changes - IBSRELA achieved a remarkable revenue growth of 73% compared to 2024, with a 61% year-over-year growth in Q4 [5][11] - XPHOZAH saw total dispenses increase by 9% and paid dispenses by 41% when excluding Medicare compared to 2024 [18] - The IBS-C market grew by nearly 11% in 2025, with approximately 7 million prescriptions written [12] Market Data and Key Metrics Changes - The IBS-C market continues to grow double digits, indicating a robust demand for alternative treatments [12] - The company anticipates IBSRELA revenues for 2026 to be between $410 million and $430 million, representing at least 50% year-over-year growth [34] - XPHOZAH revenues are expected to be between $110 million and $120 million in 2026 [38] Company Strategy and Development Direction - The company aims to significantly grow IBSRELA and maintain XPHOZAH's momentum while advancing its pipeline of innovative medicines [9][41] - A new patent for IBSRELA and XPHOZAH was issued, expiring in 2042, which is part of the strategy to build a comprehensive intellectual property portfolio [6] - The company is focused on expanding its market presence through investments in prescriber engagement and patient education [16][19] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in the growth trajectory for IBSRELA, projecting it to reach $1 billion in revenue by 2029 [9] - The company is committed to patient access and has made bold decisions to ensure that all appropriate patients can access XPHOZAH [18] - Management highlighted the importance of disciplined cash management and execution, finishing 2025 in a stronger financial position than in 2024 [8] Other Important Information - The company has been cash flow positive for two consecutive quarters, with a total cash position of $264.7 million at the end of 2025 [34][40] - The company plans to invest approximately 25% more in operating expenses for 2026, focusing on R&D and commercial execution [39] Q&A Session Summary Question: Confidence in IBSRELA volume growth to meet guidance - Management expressed strong confidence in reaching the $430 million guidance, citing the vast patient population needing alternatives to current treatments [45][46] Question: Cadence of expenses and path to sustained cash flow positivity - Management indicated that while operating expenses will increase, they are growing at a slower rate than revenue, and they have been cash flow positive for the last two quarters [52][54] Question: Expectations for CIC trial dose levels - Management clarified that the lower doses in the CIC trial are part of a strategy to evaluate safety and efficacy, with a focus on finding the optimal dose [62][64] Question: Distinctions in the CIC market compared to other treatments - Management highlighted the need for different mechanisms of action in treating CIC, emphasizing the potential utility of tenapanor in this patient population [70][72] Question: Long-term growth for XPHOZAH post-2026 - Management noted that they do not benefit from Medicare base rate adjustments and are focused on ensuring patient access through Medicaid and commercial channels [87]

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 For the transition period from to Commission file number: 001-36485 ____________________________________________________ ARDELYX, INC. ____________________________________________________ FORM 10-K ____________________________________________________ (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 OR ☐ TRANSITION REPORT PURSUA ...

Core Insights - Ardelyx, Inc. reported a significant revenue growth of 73% for IBSRELA in 2025, reaching $274.2 million, contributing to total revenues of $407.3 million for the year [1][3][10] - The company is focused on expanding its product offerings and has launched development programs for new indications and next-generation therapies [1][7][8] - Ardelyx anticipates continued growth in 2026, with projected IBSRELA revenues between $410 million and $430 million, indicating at least 50% growth compared to 2025 [4][6] Financial Performance - Total revenue for 2025 was $407.3 million, up from $333.6 million in 2024, driven primarily by IBSRELA's performance [10][14] - IBSRELA revenue for 2025 was $274.2 million, a 73% increase from $158.3 million in 2024, while XPHOZAH revenue was $103.6 million, down from $160.9 million in 2024 [3][14] - The company reported a net loss of $61.6 million for 2025, compared to a net loss of $39.1 million in 2024, with significant expenses related to commercialization and R&D [10][14][28] Product Development and Pipeline - Ardelyx is advancing its pipeline, including a Phase 3 trial for IBSRELA in chronic idiopathic constipation (CIC), with enrollment expected to complete by the end of 2026 [7][8] - The company has initiated a development program for RDX10531, a next-generation NHE3 inhibitor, with plans for an Investigational New Drug submission in the second half of 2026 [8][24] - The long-term strategy focuses on delivering novel therapies to patients with unmet medical needs and generating sustained shareholder value [2][22] Market Outlook - Ardelyx expects IBSRELA to achieve $1 billion in annual revenue by 2029, supported by increased prescribing depth and patient engagement [4][6] - The company aims to enhance its market presence through strategic initiatives and broaden its portfolio of innovative medicines [2][4]

Core Insights - Ardelyx (ARDX) is expected to report quarterly earnings of $0.02 per share, unchanged from the same period last year, with revenues projected at $117.57 million, reflecting a year-over-year increase of 1.2% [1] - The consensus EPS estimate has been revised downward by 50% over the past 30 days, indicating a reassessment by analysts [1] Revenue Projections - Analysts predict 'Revenues- Product sales, net' to reach $114.14 million, representing a 2.8% increase from the prior-year quarter [4] - 'Product sales- IBSRELA' are expected to reach $85.75 million, indicating a significant increase of 59.3% from the prior-year quarter [4] - Conversely, 'Product sales- XPHOZAH' are projected to be $28.39 million, reflecting a decrease of 50.3% from the prior-year quarter [4] Stock Performance - Ardelyx shares have increased by 1.8% over the past month, contrasting with a decline of 1.4% in the Zacks S&P 500 composite [5] - The company holds a Zacks Rank of 3 (Hold), suggesting it is expected to perform in line with the overall market in the near future [5]

Core Viewpoint - Ardelyx (ARDX) is anticipated to report flat earnings of $0.02 per share for the quarter ended December 2025, with revenues expected to reach $117.57 million, reflecting a 1.2% increase from the previous year [1][3]. Earnings Expectations - The upcoming earnings report is scheduled for February 19, and the stock may experience upward movement if earnings exceed expectations, while a miss could lead to a decline [2]. - The consensus EPS estimate has been revised down by 50% over the last 30 days, indicating a reassessment by analysts [4]. Earnings Surprise Prediction - The Zacks Earnings ESP model shows a positive Earnings ESP of +80.00% for Ardelyx, suggesting analysts have become more optimistic about the company's earnings prospects [12]. - The stock currently holds a Zacks Rank of 3, indicating a neutral outlook [12]. Historical Performance - In the last reported quarter, Ardelyx was expected to post a loss of $0.06 per share but instead delivered break-even earnings, resulting in a surprise of +100.00% [13]. - Over the past four quarters, the company has beaten consensus EPS estimates two times [14]. Conclusion - Ardelyx is viewed as a strong candidate for an earnings beat, but investors are advised to consider additional factors beyond earnings results when making investment decisions [17].

Core Insights - Generative AI is viewed as a transformative technology by Amazon's CEO Andy Jassy, indicating its potential to significantly enhance customer experiences across the company [1] - Elon Musk predicts that by 2040, humanoid robots could create a market worth $250 trillion, representing a major shift in the global economy driven by AI innovation [2][3] - Major firms like PwC and McKinsey acknowledge the potential of AI to unlock multi-trillion-dollar opportunities, reinforcing the optimistic outlook on AI's economic impact [3] Company and Industry Analysis - A breakthrough in AI technology is believed to be redefining work, learning, and creativity, leading to increased interest from hedge funds and top investors [4] - There is speculation about an under-owned company that may play a crucial role in the AI revolution, suggesting that its technology could pose a threat to competitors [4][6] - Prominent figures in technology and investment, including Bill Gates and Warren Buffett, recognize AI as a significant advancement with the potential for substantial social benefits [8] Market Dynamics - The AI ecosystem is expected to reshape how businesses, governments, and consumers operate, indicating a broad and profound impact on various sectors [2] - The competitive landscape includes major players like Tesla, Nvidia, Alphabet, and Microsoft, but there is a belief that a smaller company may offer even greater investment opportunities [6][7]

Company Overview - Ardelyx, Inc. is a biopharmaceutical company focused on discovering, developing, and commercializing innovative, first-in-class medicines to address significant unmet medical needs [3] - The company has two commercial products approved in the United States: IBSRELA (tenapanor) and XPHOZAH (tenapanor) [3] - Ardelyx's pipeline includes the Phase 3 development of IBSRELA for chronic idiopathic constipation (CIC) and RDX10531, a next-generation NHE3 inhibitor with potential applications across multiple therapeutic areas [3] Upcoming Conference Call - Ardelyx will hold a conference call on February 19, 2026, at 4:30 p.m. Eastern Time to discuss financial results and provide a business update for the full year and fourth quarter of 2025 [1] - The call will feature commentary from key members of the Ardelyx Executive Leadership Team, including the President and CEO, CFO, Chief Commercial Officer, and Chief Patient Officer [1] Commercialization Agreements - Ardelyx has agreements for the development and commercialization of tenapanor outside of the U.S., including partnerships with Kyowa Kirin in Japan and Fosun Pharma in China [3] - Knight Therapeutics is responsible for commercializing IBSRELA in Canada [3]

Core Viewpoint - Ardelyx (ARDX) has received a new patent for its oral formulations of tenapanor, which is significant for its commercial products Isbrela and Xphozah, with the patent set to expire on November 26, 2042 [1] Group 1 - The United States Patent and Trademark Office (USPTO) issued U.S. Patent No. 12,539,299 titled "Oral Formulations of Tenapanor" [1] - The patent covers the commercial formulations of Isbrela and Xphozah [1] - The patent will be submitted to the Food and Drug Administration (FDA) for listing in the Approved Drug Products with Therapeutic Equivalence Evaluations for both products [1]

Core Insights - Ardelyx, Inc. has been granted a new patent for IBSRELA and XPHOZAH, which will expire on November 26, 2042, covering the formulation of tenapanor [1][2] Company Overview - Ardelyx is a biopharmaceutical company focused on discovering, developing, and commercializing innovative, first-in-class medicines to address significant unmet medical needs [1][15] - The company has two commercial products approved in the U.S.: IBSRELA and XPHOZAH [15] Product Information IBSRELA (tenapanor) - IBSRELA is an oral formulation that acts as a locally acting inhibitor of the sodium/hydrogen exchanger 3 (NHE3), reducing sodium absorption and retaining luminal water content, which helps in softening stool consistency [3][11] - It has been shown to alleviate abdominal pain by decreasing visceral hypersensitivity and intestinal permeability in animal models [3] XPHOZAH (tenapanor) - XPHOZAH is a phosphate absorption inhibitor that works locally in the gut to reduce phosphate absorption through the paracellular pathway [4][14] - It is administered as a single tablet taken twice daily, with diarrhea being the most common side effect reported in clinical trials [4][13] Patent and Intellectual Property - The newly granted patent reflects a Patent Term Adjustment due to delays from the USPTO, extending protections for Ardelyx's portfolio of medicines [2] - The patent will be submitted for listing in the FDA's Orange Book for both IBSRELA and XPHOZAH [1]

Company Overview - Ardelyx, Inc. (NASDAQ: ARDX) is a biopharmaceutical company focused on developing and commercializing first-in-class gastrointestinal and cardiorenal therapies [3] Financial Updates - TD Cowen raised its price target on ARDX to $13 from $10 while maintaining a Buy rating, following an update to the firm's financial model ahead of ARDX's fourth-quarter results [1] - Jefferies also raised its price target on Ardelyx, Inc. to $15 from $8 and maintained a Buy rating, highlighting the company as one of the most underrated biotech launches [2] Product and Market Potential - Ardelyx's lead product, tenapanor, treats irritable bowel syndrome with constipation (IBS-C) and chronic kidney disease-related conditions [3] - Peak sales for tenapanor are projected at $1.5–$2 billion by 2035, with additional upside if the new 2041 formulation patent proves defendable [2]