Ardelyx Reports First Quarter 2026 Financial Results and Provides Business Update
Rhea-AI Summary
Ardelyx (Nasdaq: ARDX) reported Q1 2026 product revenue of $93.4M (38% YoY), with IBSRELA at $70.1M (+58% YoY) and XPHOZAH at $23.3M. The company reaffirmed 2026 revenue guidance for IBSRELA of $410–430M and XPHOZAH $110–120M. Cash and short-term investments were $238.1M as of March 31, 2026. Ardelyx began dosing in the Phase 3 ACCEL trial for CIC, expects enrollment to complete by end-2026, and continues IND-enabling work for RDX10531.
AI-generated analysis. Not financial advice.
Positive
- Total product revenue +38% YoY to $93.4M
- IBSRELA revenue +58% YoY to $70.1M
- Reiterated 2026 guidance for IBSRELA $410–430M and XPHOZAH $110–120M
- Phase 3 ACCEL dosing started; enrollment expected complete by end-2026
- Cash balance of $238.1M supports trials and commercialization
Negative
- SG&A expenses rose to $102.3M in Q1 2026, up from $83.2M
- Net loss of $37.6M (−$0.15 per share) in Q1 2026
- Cash decline from $264.7M at 12/31/25 to $238.1M at 3/31/26
- IBSRELA pediatric safety boxed warning: risk of serious dehydration in young patients
News Market Reaction – ARDX
On the day this news was published, ARDX gained 8.69%, reflecting a notable positive market reaction. Argus tracked a peak move of +12.4% during that session. Argus tracked a trough of -4.3% from its starting point during tracking. Our momentum scanner triggered 32 alerts that day, indicating elevated trading interest and price volatility. This price movement added approximately $139M to the company's valuation, bringing the market cap to $1.74B at that time. Trading volume was elevated at 3.0x the daily average, suggesting notable buying interest.
Data tracked by StockTitan Argus on the day of publication.
Key Figures
Market Reality Check
Peers on Argus
ARDX was up 0.67% pre-release while key biotech peers were mixed to down (AUPH -3.6%, VCEL -3.8%, VERA -1.97%, MNKD -0.9%, CDTX roughly flat). No corroborating sector-wide move is evident.
Previous Earnings Reports
| Date | Event | Sentiment | Move | Catalyst |
|---|---|---|---|---|
| Feb 19 | FY 2025 earnings | Positive | -15.0% | Reported 2025 revenue of $407.3M and reiterated 2026 product guidance. |
| Oct 30 | Q3 2025 earnings | Positive | +21.0% | Q3 2025 revenue of $110.3M with strong IBSRELA growth and raised guidance. |
| Aug 04 | Q2 2025 earnings | Positive | +16.9% | Q2 2025 revenue of $97.7M and higher IBSRELA guidance to $250–260M. |
| May 01 | Q1 2025 earnings | Positive | -24.5% | Q1 2025 revenue of $74.1M but wider net loss from commercialization spend. |
| Feb 20 | FY 2024 earnings | Positive | -10.1% | FY 2024 revenue of $333.6M and improving net loss versus 2023. |
Earnings have often been volatile, with several negative price reactions despite generally strong growth metrics.
Over the past year, Ardelyx has repeatedly highlighted rapid revenue growth from IBSRELA and XPHOZAH and rising cash balances. Prior earnings showed total annual revenue reaching $333.6M in 2024 and $407.3M in 2025, with IBSRELA climbing to $274.2M. Guidance has been regularly raised, and pipeline steps like the ACCEL Phase 3 trial and next‑generation NHE3 inhibitor RDX10531 were advanced. Despite this, several earnings releases were followed by share price declines, underscoring sensitivity to expectations and guidance details.
Historical Comparison
Past Ardelyx earnings releases produced an average move of about -2.35%, with both sharp rallies and selloffs despite consistent revenue growth.
Same‑tag events show steady revenue expansion from FY 2024 to FY 2025, repeated guidance raises for IBSRELA and XPHOZAH, and advancement of the ACCEL Phase 3 trial and next‑generation NHE3 program.
Market Pulse Summary
The stock moved +8.7% in the session following this news. A strong positive reaction aligns with the report’s combination of rapid top-line growth and reiterated guidance. Q1 2026 product revenue reached $93.4M, with IBSRELA up 58% year-over-year to $70.1M, while full‑year IBSRELA guidance of $410–430M and XPHOZAH guidance of $110–120M were maintained. However, the company still reported a net loss of $37.6M and rising SG&A, and past earnings have sometimes seen sharp reversals, so sustainability depended on future execution and expense control.
Key Terms
phase 3 clinical trial medical
ind-enabling studies medical
nhe3 inhibitor medical
ibs-c medical
ckd medical
contraindications regulatory
AI-generated analysis. Not financial advice.
Q1 2026 total product revenue of
IBSRELA Q1 2026 revenue growth of
Strong financial position with
Conference call scheduled for 4:30 PM Eastern Time
WALTHAM, Mass., April 30, 2026 (GLOBE NEWSWIRE) -- Ardelyx Inc. (Nasdaq: ARDX), (“Ardelyx” or the “Company”) a commercial-stage biopharmaceutical company focused on the development and commercialization of innovative medicines that meet significant unmet medical needs, today reported financial results for the first quarter ended March 31, 2026, and provided a business update.
“In the first quarter of 2026, Ardelyx continued our strong commercial execution which coupled with our strengthening cash position allows us to conduct multiple IBSRELA clinical trials, advance development of our next-generation NHE3 inhibitor, RDX10531, and purposefully explore various avenues to build a significant and sustainable pipeline of important medicines,” said Mike Raab, President and Chief Executive Officer of Ardelyx. “IBSRELA is the cornerstone for the company we’re building and is on the path to becoming a blockbuster by achieving at least one billion dollars in revenue in 2029 with continued strong growth thereafter. We are in a position of financial strength, providing flexibility to allocate capital across the business, accelerate commercial momentum, and drive intrinsic long-term value for the Company, our patients, and our shareholders.”
Product Revenue
Revenue for IBSRELA® (tenapanor) during the first quarter of 2026 was
Revenue for XPHOZAH® (tenapanor) during the first quarter of 2026 was
2026 Revenue Guidance
Ardelyx reiterates its full-year 2026 revenue guidance:
- IBSRELA revenue between
$410.0 and$430.0 million - XPHOZAH revenue between
$110.0 and$120.0 million
Advancing a Pipeline of Important Medicines
- IBSRELA is being evaluated for the treatment of chronic idiopathic constipation (CIC) in adults in a Phase 3 clinical trial, ACCEL. In January 2026, the Company dosed the first patient in ACCEL and has initiated all pre-identified sites. The Company expects to complete enrollment by the end of 2026 with topline data read out in the second half of 2027.
- IBSRELA is also being evaluated in multiple pediatric clinical trials which could potentially provide six months of additional patent life for tenapanor.
- RDX10531, the Company’s next-generation NHE3 inhibitor is currently being tested in IND-enabling studies. If successful, RDX10531 has potential for broad applications across multiple therapeutic areas.
Other Corporate Developments
- In February, Ardelyx announced a multi-year partnership with the LPGA to serve as an official corporate pharmaceutical marketing partner, focusing on digestive health education and patient empowerment throughout the 2026 season.
- In April, the Company expanded its executive leadership team with the appointment of Rajani Dinavahi, M.D. as Chief Medical Officer and Felecia W. Ettenberg, Esq. as Chief Legal Officer.
- In April, the Company and SLR Investment Corp refinanced their existing debt, resulting in better overall terms. Morgan Stanley & Co. LLC acted as financial advisor to Ardelyx.
- The Company’s abstracts containing additional tenapanor data were accepted for poster presentations at the upcoming Digestive Disease Week conference (May 2-5, 2026) and National Kidney Foundation’s Spring Clinical Meeting (May 6-10, 2026).
First Quarter 2026 Financial Results
- Cash Position: As of March 31, 2026, the Company had total cash, cash equivalents and short-term investments of
$238.1 million , compared to total cash, cash equivalents and short-term investments of$264.7 million as of December 31, 2025. - Revenues: Total product revenue for the quarter ended March 31, 2026 was
$93.4 million , compared to$67.8 million for the quarter ended March 31, 2025, reflecting38% growth, driven by increased demand. - R&D Expenses: Research and development expenses were
$20.2 million for the quarter ended March 31, 2026, compared to$14.9 million for the quarter ended March 31, 2025. The increase was primarily related to investments in the ACCEL Phase 3 trial for CIC. - SG&A Expenses: Selling, general and administrative expenses were
$102.3 million for the quarter ended March 31, 2026, compared to$83.2 million for the quarter ended March 31, 2025. The increase was related to ongoing investments to drive adoption of IBSRELA. - Net Loss: Net loss for the quarter ended March 31, 2026 was
$37.6 million , or$(0.15) per share, compared to net loss of$41.1 million , or$(0.17) per share, for the quarter ended March 31, 2025. The net loss for the first quarter of 2026 included share-based compensation expense of$14.2 million .
Conference Call Details
The company will host a conference call today, April 30, 2026, at 4:30 PM ET to discuss today’s announcement. To participate in the conference call, please dial (877) 346-6112 (domestic) or +1 (848) 280-6350 (international) and ask to be joined into the Ardelyx call. A webcast of the call can also be accessed by visiting the Investor page of the company's website, https://ardelyx.com/, and will be available on the website following the call.
IMPORTANT SAFETY INFORMATION (IBSRELA)
| WARNING: RISK OF SERIOUS DEHYDRATION IN PEDIATRIC PATIENTS IBSRELA is contraindicated in patients less than 6 years of age; in nonclinical studies in young juvenile rats administration of tenapanor caused deaths presumed to be due to dehydration. Avoid use of IBSRELA in patients 6 years to less than 12 years of age. The safety and effectiveness of IBSRELA have not been established in patients less than 18 years of age. |
CONTRAINDICATIONS
- IBSRELA is contraindicated in patients less than 6 years of age due to the risk of serious dehydration.
- IBSRELA is contraindicated in patients with known or suspected mechanical gastrointestinal obstruction.
WARNINGS AND PRECAUTIONS
Risk of Serious Dehydration in Pediatric Patients
- IBSRELA is contraindicated in patients below 6 years of age. The safety and effectiveness of IBSRELA in patients less than 18 years of age have not been established. In young juvenile rats (less than 1 week old; approximate human age equivalent of less than 2 years of age), decreased body weight and deaths occurred, presumed to be due to dehydration, following oral administration of tenapanor. There are no data available in older juvenile rats (human age equivalent 2 years to less than 12 years).
- Avoid the use of IBSRELA in patients 6 years to less than 12 years of age. Although there are no data in older juvenile rats, given the deaths in younger rats and the lack of clinical safety and efficacy data in pediatric patients, avoid the use of IBSRELA in patients 6 years to less than 12 years of age.
Diarrhea
Diarrhea was the most common adverse reaction in two randomized, double-blind, placebo-controlled trials of IBS-C. Severe diarrhea was reported in
MOST COMMON ADVERSE REACTIONS
The most common adverse reactions in IBSRELA-treated patients (incidence ≥
INDICATION
IBSRELA (tenapanor) is indicated for the treatment of Irritable Bowel Syndrome with Constipation (IBS-C) in adults.
Please see full Prescribing Information, including Boxed Warning, for additional risk information.
IMPORTANT SAFETY INFORMATION (XPHOZAH)
CONTRAINDICATIONS
XPHOZAH is contraindicated in:
- Pediatric patients under 6 years of age
- Patients with known or suspected mechanical gastrointestinal obstruction
WARNINGS AND PRECAUTIONS
Diarrhea
Patients may experience severe diarrhea. Treatment with XPHOZAH should be discontinued in patients who develop severe diarrhea.
MOST COMMON ADVERSE REACTIONS
Diarrhea, which occurred in 43
INDICATION
XPHOZAH (tenapanor), 30 mg BID, is indicated to reduce serum phosphorus in adults with chronic kidney disease (CKD) on dialysis as add-on therapy in patients who have an inadequate response to phosphate binders or who are intolerant of any dose of phosphate binder therapy.
For additional safety information, please see full Prescribing Information.
About Ardelyx
Ardelyx is a commercial-stage biopharmaceutical company focused on the development and commercialization of innovative medicines that meet significant unmet medical needs. Ardelyx has two commercial products approved in the United States, IBSRELA® (tenapanor) and XPHOZAH® (tenapanor). The company’s pipeline includes the Phase 3 development of IBSRELA for chronic idiopathic constipation (CIC) and RDX10531, a next-generation NHE3 inhibitor with potential application across multiple therapeutic areas. Ardelyx works with partners to develop and commercialize our products outside of the United States. For more information, please visit https://ardelyx.com/ and connect with us on X (formerly known as Twitter), LinkedIn and Facebook.
Forward Looking Statements
To the extent that statements contained in this press release are not descriptions of historical facts regarding Ardelyx, they are forward-looking statements reflecting the current beliefs and expectations of management made pursuant to the safe harbor of the Private Securities Reform Act of 1995, including Ardelyx’s current expectations regarding: the long term potential for Ardelyx’s existing commercial products; opportunities for continued IBSRELA growth, including our expectations and timing for achieving one billion in revenue; our U.S. net product sales revenue guidance for IBSRELA and XPHOZAH for full year 2026; and our expectations and timing regarding pipeline development activities, including enrollment in and expected topline readout of the Phase 3 ACCEL trial, the potential for additional patent life for IBSRELA as a result of ongoing pediatric clinical trials and RDX10531’s potential across multiple therapeutic areas. Such forward-looking statements involve known and unknown risks, uncertainties and other factors that are in some cases beyond our control, that could cause actual outcomes or results to differ materially from those expressed or implied by the forward-looking statements. Such risks and uncertainties include, among others, uncertainties associated with the development of, regulatory process for, and commercialization of drugs in the U.S. and internationally. Ardelyx undertakes no obligation to update or revise any forward-looking statements. For a further description of the risks and uncertainties that could cause actual results to differ from those expressed in these forward-looking statements, as well as risks relating to Ardelyx's business in general, please refer to Ardelyx's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on April 30, 2026, and its future current and periodic reports to be filed with the Securities and Exchange Commission.
Investor Contact:
Lisa Caperelli
lcaperelli@ardelyx.com
| Ardelyx, Inc. Condensed Balance Sheets (Unaudited) (in thousands) | |||||
| March 31, 2026 | December 31, 2025 | ||||
| Assets | |||||
| Cash and cash equivalents | $ | 31,209 | $ | 67,999 | |
| Short-term investments | 206,865 | 196,690 | |||
| Accounts receivable | 82,840 | 71,848 | |||
| Prepaid commercial manufacturing | 18,873 | 14,479 | |||
| Inventory | 128,025 | 123,107 | |||
| Property and equipment, net | 2,002 | 2,184 | |||
| Right-of-use assets | 4,433 | 4,795 | |||
| Prepaid and other assets | 30,260 | 20,502 | |||
| Total assets | $ | 504,507 | $ | 501,604 | |
| Liabilities and stockholders’ equity | |||||
| Accounts payable | $ | 28,195 | $ | 19,235 | |
| Accrued compensation and benefits | 9,382 | 19,108 | |||
| Current portion of operating lease liability | 1,510 | 1,479 | |||
| Deferred revenue | 16,947 | 14,905 | |||
| Accrued expenses and other liabilities | 70,470 | 51,218 | |||
| Long-term debt | 203,517 | 202,834 | |||
| Deferred royalty obligation related to the sale of future royalties | 25,864 | 25,876 | |||
| Total stockholders’ equity | 148,622 | 166,949 | |||
| Total liabilities and stockholders’ equity | $ | 504,507 | $ | 501,604 | |
| Ardelyx, Inc. Condensed Statements of Operations (Unaudited) (in thousands, except share and per share amounts) | |||||||
| Three Months Ended March 31, | |||||||
| 2026 | 2025 | ||||||
| Revenues | |||||||
| Product sales, net | |||||||
| IBSRELA | $ | 70,074 | $ | 44,403 | |||
| XPHOZAH | 23,299 | 23,411 | |||||
| Total product sales, net | 93,373 | 67,814 | |||||
| Product supply revenue | 354 | 254 | |||||
| Licensing revenue | 51 | 5,020 | |||||
| Non-cash royalty revenue related to the sale of future royalties | 695 | 1,026 | |||||
| Total revenues | 94,473 | 74,114 | |||||
| Costs and operating expenses | |||||||
| Cost of sales(1) | 4,811 | 12,303 | |||||
| Research and development | 20,188 | 14,938 | |||||
| Selling, general and administrative | 102,267 | 83,222 | |||||
| Total costs and operating expenses | 127,266 | 110,463 | |||||
| Loss from operations | (32,793 | ) | (36,349 | ) | |||
| Interest expense | (5,599 | ) | (4,191 | ) | |||
| Non-cash interest expense related to the sale of future royalties | (1,317 | ) | (2,071 | ) | |||
| Other income, net | 2,112 | 2,326 | |||||
| Loss before provision for income taxes | (37,597 | ) | (40,285 | ) | |||
| Provision for income taxes | 8 | 859 | |||||
| Net loss | $ | (37,605 | ) | $ | (41,144 | ) | |
| Net loss per share of common stock - basic and diluted | $ | (0.15 | ) | $ | (0.17 | ) | |
| Shares used in computing net loss per share - basic and diluted | 245,855,082 | 238,624,145 | |||||
| (1)Prior year amounts have been reclassified to conform to the current year presentation. | |||||||
