ProKidney Reports Full Year 2025 Financial Results and Business Highlights

• On track to complete enrollment for the Phase 3 PROACT 1 accelerated approval analysis of rilparencel in mid-2026; anticipate pivotal topline results in Q2 2027
• In a July 2025 Type B meeting, aligned with FDA on the accelerated approval pathway for rilparencel using eGFR slope as the surrogate endpoint
• Presented positive results from the Phase 2 REGEN-007 study of rilparencel as a late-breaking clinical trial at ASN Kidney Week 2025 followed by a peer-reviewed publication in CJASN
• Ended 2025 with $270.0 million in cash and cash equivalents and marketable securities, supporting operations into mid-2027

WINSTON-SALEM, N.C., March 18, 2026 (GLOBE NEWSWIRE) -- ProKidney Corp. (Nasdaq: PROK) (“ProKidney” or the “Company"), a leading late clinical-stage cell therapy company focused on chronic kidney disease (CKD), today reported financial results for the full year ended December 31, 2025, and provided business highlights.

“2025 was a pivotal year for ProKidney, highlighted by positive Phase 2 REGEN-007 study results, alignment with the FDA on the accelerated approval pathway for rilparencel, and significant enrollment momentum in the Phase 3 PROACT 1 study,” said Bruce Culleton, M.D., CEO of ProKidney. “Looking ahead, we are well positioned to deliver on key upcoming milestones, including completion of enrollment for the Phase 3 PROACT 1 study this year followed by pivotal eGFR slope data in the second quarter of 2027. Our mission remains highly focused on bringing a potential new treatment option to patients with advanced CKD and diabetes at high risk of kidney failure – an area of high unmet medical need.”

Key Accomplishments in 2025

• Generated significant enrollment momentum in the Phase 3 PROACT 1 study, positioning the Company for a pivotal topline readout in Q2 2027 using eGFR slope.
• Confirmed with the U.S. Food and Drug Administration (FDA) in a July 2025 Type B meeting that eGFR slope in patients from the ongoing Phase 3 PROACT 1 study can serve as the surrogate endpoint and primary basis for a Biologics License Application (BLA) submission of rilparencel under the accelerated approval pathway. FDA also confirmed that PROACT 1 may be used to support both accelerated and confirmatory approval of rilparencel. ProKidney continues to maintain its ongoing dialogue with the FDA under rilparencel’s regenerative medicine advanced therapy (RMAT) designation.
• Presented positive results from the Phase 2 REGEN-007 study of rilparencel in patients with advanced CKD and diabetes as a late-breaking clinical trial at the American Society of Nephrology (ASN) Kidney Week in November 2025, followed by a peer-reviewed publication in the Clinical Journal of the American Society of Nephrology (CJASN).
• Initiated expansion of in-house manufacturing footprint in two adjacent, company-owned facilities totaling 180,000 square feet in Winston-Salem, NC.

Anticipated Upcoming Milestones

• Mid-2026: Complete enrollment of patients to be included in the Phase 3 PROACT 1 accelerated approval efficacy analysis (n=~360)
• 2H 2026: Complete full enrollment for Phase 3 PROACT 1 confirmatory composite time-to-event analysis (n=~470)
• Throughout FY 2026: Present results from ongoing mechanism of action studies of rilparencel at medical and scientific conferences
• Q2 2027: Phase 3 PROACT 1 readout of surrogate endpoint (eGFR slope) for accelerated approval
• Q4 2027: BLA submission of rilparencel
• 2H 2028: BLA approval and commercial launch of rilparencel
• 2H 2029: Phase 3 PROACT 1 topline readout of confirmatory endpoint (composite time-to-event) for full approval

Full Year 2025 Financial Highlights

Liquidity: Cash, cash equivalents and marketable securities as of December 31, 2025, totaled $270.0 million, compared to $358.3 million as of December 31, 2024. We expect that our existing cash, cash equivalents and marketable securities held at December 31, 2025, will enable us to fund our operating expenses and capital expenditure requirements into mid-2027.

R&D Expenses: Research and development expenses were $114.1 million for the year ended December 31, 2025, compared to $127.7 million for the year ended December 31, 2024. The decrease of $13.5 million was driven primarily by decreases in clinical study costs of $18.1 million from our clinical trials that have been completed or terminated. Additionally, operating costs have decreased $3.3 million related to the recognition of costs related to the remediation of quality management systems and processes in the 2024 period. These decreases have been offset by increases in cash and equity based compensation costs of approximately $5.5 million as we continue to hire additional personnel in the areas of clinical development, quality, manufacturing, and biostatistics to support our ongoing clinical trials. Also, clinical trial costs have increased approximately $2.4 million related to our ongoing PROACT 1 study.

G&A Expenses: General and administrative expenses were $51.8 million for the year ended December 31, 2025 compared to $56.1 million for the year ended December 31, 2024. The decrease of $4.3 million was driven primarily by decreases in impairment charges of $5.0 million related to our former facility in Greensboro, North Carolina and decreases in equity based compensation of approximately $3.4 million due to forfeitures of awards and lower fair value of recent awards. These decreases have been partially offset by increases in professional fees and other operating expenses of approximately $3.8 million driven by the domestication of our foreign subsidiaries to the U.S. in 2025 and other business initiatives.

Net Loss Before Noncontrolling Interest: Net loss before noncontrolling interest was $151.6 million and $163.3 million for the years ended December 31, 2025, and 2024, respectively.

Shares outstanding: Class A and Class B common stock outstanding at December 31, 2025, totaled 301,070,056.

About Chronic Kidney DiseaseCKD is a progressive condition characterized by the gradual decline of kidney function, which can ultimately lead to end-stage kidney disease (ESKD) requiring dialysis or transplantation. An estimated 37 million adults in the U.S. have CKD, though many remain undiagnosed in the early stages. Diabetes is the leading cause of CKD, and individuals with both conditions face significantly elevated risks of cardiovascular events, hospitalization, and mortality. ProKidney is developing rilparencel for patients with Stage 3b/4 CKD and diabetes, a population that includes over 1 million people in the U.S. While current treatment options aim to slow disease progression, there remains a substantial unmet need for therapies that can stabilize kidney function and delay or prevent the need for dialysis in patients with advanced CKD.

About the Phase 2 REGEN-007 Clinical TrialREGEN-007 was a multi-center Phase 2 open-label 1:1 randomized two-armed trial in patients with diabetes and CKD who have an eGFR of 20-50 mL/min/1.73m². At randomization, patients were assigned to one of two treatment groups using different dosing regimens. Group 1 replicated the dosing schedule of the ongoing Phase 3 PROACT 1 study in which patients received two scheduled rilparencel injections (one in each kidney), approximately three months apart. Group 2 tested an exploratory dosing regimen to investigate whether disease progression triggers, rather than a time-based trigger, could optimize multiple administrations of rilparencel. In Group 2, patients received a single rilparencel injection in one kidney and a second injection in the contralateral kidney only if triggered by a sustained eGFR decline from baseline of ≥ 20%, and/or an increase of ≥ 30% and ≥ 30 mg/g in the urine albumin to creatinine ratio (UACR) from baseline. The purpose of this study was to assess the safety, efficacy, and durability of up to two rilparencel injections on renal function progression.

About the Phase 3 REGEN-006 (PROACT 1) Clinical TrialREGEN-006 is an ongoing Phase 3, randomized, blinded, sham controlled safety and efficacy study of rilparencel in subjects with advanced CKD and type 2 diabetes. The study protocol was amended in 1H 2024 to focus on a subset of patients with Stage 4 CKD (eGFR 20-30 mL/min/1.73m2) and late Stage 3b CKD (eGFR 30-35 mL/min/1.73m2) with accompanying albuminuria (UACR less than 5,000 mg/g for patients with eGFR 20-30 mL/min/1.73m2 and 300-5,000 mg/g for patients with eGFR 30-35 mL/min/1.73m2). The total planned enrollment is approximately 470 subjects. Subjects are randomized (1:1) to the treatment group and the sham control group prior to kidney biopsy or a sham biopsy procedure, respectively. The primary objective is to assess the efficacy of up to two rilparencel injections (one in each kidney) using a minimally invasive percutaneous approach. The surrogate endpoint for accelerated approval is eGFR slope, and the primary composite endpoint is the time from first injection to the earliest of: at least 40% reduction in eGFR; eGFR