PTC Therapeutics Surpasses Revenue Guidance, Hints at 2026 Cash Flow Breakeven

Date of Call: Feb 19, 2026

Financials Results

• Revenue: Full year 2025 total net product and royalty revenue was $831 million, exceeding guidance of $750 million to $800 million.

Guidance:

• Product revenue guidance for 2026 of $700 million to $800 million, representing 19% to 36% growth over 2025.
• Non-GAAP R&D and SG&A expense guidance for 2026 of $680 million to $720 million.
• Potential to reach cash flow breakeven in 2026.

Business Commentary:

Strong Financial Performance and Revenue Growth:

• PTC Therapeutics reported total net product and royalty revenue of $831 million for the full year 2025, exceeding guidance of $750 million to $800 million.
• The growth was driven by the successful launch of Sephience, which contributed $111 million in revenue since its launch, along with strong performance from mature products.

Sephience Launch Success:

• Sephience achieved $92 million in revenue in the fourth quarter and $111 million for the entire year since its launch.
• This success is attributed to its differentiated safety and efficacy profile, broad uptake across all patient segments and age groups, and strong adoption by healthcare providers.

Operational Efficiency and Expense Management:

• Non-GAAP R&D and SG&A expenses for 2025 were $728 million, coming in below guidance of $730 million to $760 million.
• This was achieved through disciplined OpEx management and the monetization of the remainder of the Evrysdi royalty, resulting in a strong financial position with $1.95 billion in cash.

Geographic Expansion and Future Revenue Potential:

• PTC expects to have patients on commercial drug in 20 to 30 countries by the end of 2026, with significant contributions expected from Japan and Brazil.
• The company anticipates increased penetration in current markets and geographic expansion as key drivers for future revenue growth.

R&D Pipeline Progress:

• Positive results were achieved from the Phase II PIVOT-HD study of votoplam, and alignment was reached on the Phase III study design with the FDA.
• The company continues to advance several programs from its innovative R&D platforms, including RNA splicing and ferroptosis, with expectations to elect a development candidate for the MSH3 program and initiate Phase I studies for the NLRP3 program.

Sentiment Analysis:

Overall Tone: Positive

• Management expressed strong optimism about the Sephience launch, stating '2025 was a year of many significant successes for PTC' and 'the global launch is off to a strong start.' They noted 'broad uptake across all key patient segments' and 'very high refill rates and low discontinuation rates.' The company also highlighted a 'robust commercial engine,' 'innovative R&D programs,' and a 'strong financial position' for future growth.

Q&A:

• Question from Kristen Kluska (Cantor Fitzgerald & Co., Research Division): What's baked into your internal and external guidance for Sephience sales this year? Is the guidance conservative?
  Response: The $700-$800M product revenue guidance for 2026 is conservative, with the vast majority expected from Sephience. U.S. will drive the majority of revenue, with ex-U.S. contributions expected later in the year as geographic expansion proceeds to 20-30 countries by year-end.

• Question from Kristen Kluska (Cantor Fitzgerald & Co., Research Division): How are 'lost to follow-up' patients becoming aware of Sephience, and what trends are you seeing within specialty centers?
  Response: Patients previously considered 'lost to follow-up' are actively seeking Sephience via social media and patient communities. Centers are initially trying it on therapy-naive or treatment-failed patients, with positive responses helping to build confidence for broader adoption across all patient segments.

• Question from Tazeen Ahmad (BofA Securities, Research Division): Can you provide details on the additional study requested by FDA for vatiquinone?
  Response: FDA's CRL for vatiquinone was based on statistical considerations. The company plans to conduct an open-label single-arm study using a natural history comparator group (FACOMS database) to provide additional evidence. A meeting with FDA in Q2 2026 is scheduled to align on the protocol.

• Question from Tazeen Ahmad (BofA Securities, Research Division): Is the additional study for vatiquinone baked into the 2026 OpEx guidance?
  Response: Yes, the open-label study for vatiquinone is planned and is less costly than a traditional placebo-controlled study. No change to the 2026 OpEx guidance is expected.

• Question from Eliana Merle (Barclays Bank PLC, Research Division): What are your expectations for Sephience's discontinuation rate and cadence of new starts?
  Response: Sephience is showing very low discontinuation rates (single digits) and high refill rates early in the launch. The cadence of new patient starts is expected to remain consistent, supported by ongoing medical education and case management.

• Question from Lut Ming Cheng (JPMorgan Chase & Co, Research Division): How should we think about Sephience's growth in Europe after the 6-month free pricing period?
  Response: In Germany, pricing and reimbursement discussions are ongoing following a favorable benefit assessment. The company aims to maintain the highest possible list price with the lowest rebate, supported by a strong clinical data package.

• Question from Judah Frommer (Morgan Stanley, Research Division): Have reimbursement dynamics shifted in favor of Sephience, and how do you prioritize internal pipeline vs. business development?
  Response: Reimbursement dynamics have shifted positively, with most U.S. commercial payers offering policies with no step edits and 12-month refills. The company is financially strong and open to disciplined business development to accelerate top-line growth while focusing on the Sephience launch and internal R&D.

• Question from Benjamin Burnett (Wells Fargo Securities, LLC, Research Division): What Q1 dynamics should we expect for Sephience, and where will future demand come from?
  Response: Q1 dynamics are expected to reflect continued early launch momentum. Demand is currently broad across all patient segments, with a majority from therapy-naive or treatment-failed patients. Over time, switches from existing therapies are expected as efficacy data builds confidence.

• Question from Unknown Analyst (Jefferies): How do you rank ex-U.S./ex-EU markets for Sephience revenue contribution potential and timeline?
  Response: Japan is expected to contribute first in Q2 2026 with meaningful revenue in H2, supported by a full label and experienced team. Brazil, with ~5,000 patients, will contribute via named patient programs, with more meaningful revenue anticipated by year-end.

• Question from Unknown Analyst (RBC): Can you walk us through the Phase III study design for votoplam and your net pricing expectations for Sephience?
  Response: The Phase III INVEST-HD study for votoplam is a ~770-patient, placebo-controlled trial with a 3:2 randomization and primary endpoint change in cUHDRS. An interim analysis is planned. Net pricing for Sephience is expected to be 15-25% of gross, starting at the lower end and increasing over time.

• Question from Joseph Thome (TD Cowen, Research Division): Who controls further disclosures for votoplam, and what triggers the Phase III interim analysis?
  Response: Novartis controls the votoplam program and will conduct the Phase III study. The interim analysis details are not yet disclosed, but it is designed to assess efficacy/futility to potentially support an accelerated approval pathway.

• Question from Samantha Corwin (William Blair & Company L.L.C., Research Division): How should we interpret the Translarna sales allowance in France, and could upright stability be the primary endpoint for vatiquinone?
  Response: The France allowance was a unique, one-time adjustment related to an early access program. For vatiquinone, upright stability is the most sensitive short-term endpoint, but mFARS may be more appropriate for a longer-duration study to capture overall disease progression.

• Question from Jarwei Fang (Citigroup): Could the early U.S. launch trends for Sephience be replicated in Japan and Brazil?
  Response: Global patient communities and social media are driving awareness similarly to the U.S. The internal teams have local expertise to navigate unique regional dynamics, enabling early launch success in these key markets.

• Question from Jarwei Fang (Citigroup): What do the remaining ~20% of U.S. centers of excellence need to see to adopt Sephience?
  Response: The remaining centers are likely lagging due to a few factors. Management will leverage peer-to-peer medical education, newly published data, and strong patient demand/social media influence to accelerate adoption.

• Question from Luke Herrmann (Robert W. Baird & Co. Incorporated, Research Division): What are the key features for the external control matching strategy in the vatiquinone study?
  Response: The matching strategy will align on key factors like age, age of onset, and baseline severity using the FACOMS natural history database, with regulatory precedent for this approach in Friedreich's ataxia.

• Question from Unknown Analyst (Truist): Should we pay attention to Palynziq's upcoming PDUFA for adolescents, and will gross-to-net reach 15-25% this year?
  Response: Even if Palynziq is approved for adolescents, its administration challenges position Sephience as the preferred first-line therapy. Gross-to-net for Sephience will start at the lower end of the 15-25% range, with a gradual increase over multiple quarters, not expected to be reached in 2026.

• Question from Unknown Analyst (Leerink Partners): What are the first clinical proof-of-concept milestones for your new splicing and inflammation programs, and how are you prioritizing capital allocation?
  Response: Key milestones include electing an MSH3 development candidate and advancing NLRP3 into Phase I by mid-2026. Capital allocation is focused on disciplined OpEx management, supporting Sephience launch/growth, and advancing the R&D pipeline.

• Question from Kyuwon Choi (Goldman Sachs Group, Inc., Research Division): What fibrotic disease offers the shortest path to market for the NRF2 program, and what is the focus for the NLRP3 program?
  Response: The NRF2 program is focused on rare diseases with clear pathway overlap and objective biomarkers to facilitate accelerated development. The NLRP3 program's initial target is pulmonary fibrotic conditions, given pathway overlap with lung inflammation/fibrosis.

Contradiction Point 1

Brazil Revenue Timeline

Contradiction on when meaningful revenue from Brazil will be achieved, impacting financial forecasts and market expansion strategy.

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2025Q4: Brazil approval (in early 2026) will begin via named patient programs. Meaningful revenue expected towards year-end. - Eric Pauwels(Chief Business Officer)

Outline the Phase III study design for votoplam, discuss potential approval pathways and scenarios for earlier approval, and what are the net pricing expectations for Sephience? - John Peyton Bohnsack (TD Cowen)

20251105-2025 Q3: Revenue is expected in 2026. - Eric Pauwels(Chief Business Officer)

Contradiction Point 2

Japan Launch Timeline and Revenue Expectations

Contradiction on when meaningful revenue from Japan will be achieved, affecting financial forecasts and market strategy.

What is Brian Abrahams' question from RBC? - Unknown Analyst (RBC, for Brian Abrahams)

2025Q4: Japan launch (approval in December 2025) is expected to start revenue in Q2, with more meaningful contributions in H2. - Eric Pauwels(CBO)

What is the Phase III study design for votoplam; what are the potential approval pathways and scenarios for earlier approval; and what are the net pricing expectations for Sephience? - Joon Lee (Truist Securities, Inc.)

2025Q3: Japan approval is anticipated by year-end. ... Price negotiations expected to conclude in Q1 2026 for a fully reimbursed launch. - Eric Pauwels(CBO)

Contradiction Point 3

Gross-to-net Pricing Trajectory for Sephience

Contradiction on the timeline to reach the upper end of the gross-to-net pricing range, affecting financial projections.

Can you provide an update as requested by Joon Lee? - Unknown Analyst (Truist, for Joon Lee)

2025Q4: Gross-to-net pricing will start at the lower end (15–25%) and take multiple quarters to reach the upper end; it is not expected to hit the top end in 2026. - Pierre Gravier(CFO)

Should we focus on Palynziq's PDUFA for adolescent PKU and will gross-to-net pricing reach 15-25% this year? - Huidong Wang (Barclays Bank PLC)

2025Q3: The gross-to-net is currently favorable due to a higher-than-stabilized commercial payer mix. The payer mix is expected to stabilize at 65% commercial/35% government. - Eric Pauwels(CBO)

Contradiction Point 4

"Lost to Follow-Up" Patient Awareness

Contradiction on the cause of patient awareness versus follow-up, impacting understanding of market reach and patient support effectiveness.

Can you provide more details on the recent guidance adjustment? - Kristen Kluska (Cantor Fitzgerald)

2025Q4: The 'lost to follow-up' term was a physician misconception; many adults not in regular care still want therapy, and social media is driving awareness. - Matthew Klein(CEO)

What is the basis of your internal and external guidance for Sephience sales this year, how conservative is it, how will geographic expansion influence revenue, how are "lost to follow-up" patients becoming aware of the therapy, and what trends are emerging in specialty centers? - Brian Abrahams (RBC Capital Markets)

20251105-2025 Q3: The process is moving well, with PTC Cares teams providing experienced support. The time from patient start form (PSF) to fill is typically 2-4 weeks, depending on the payer... - Eric Pauwels(Chief Business Officer)

Contradiction Point 5

Gross-to-Net Pricing Timeline for Sephience

Conflicting statements on when gross-to-net pricing will reach its upper range, affecting financial projections and pricing strategy.

What is Truist's question for Joon Lee? - Unknown Analyst (Truist, for Joon Lee)

2025Q4: Gross-to-net pricing for Sephience is expected to be 15–25%, starting at the lower end and increasing over time to steady state. It is not expected to hit the top end in 2026. - Pierre Gravier(CFO)

Should we focus on Palynziq's upcoming PDUFA for adolescent PKU and anticipate gross-to-net pricing reaching 15–25% this year? - Jenny Leigh Gonzalez-Armenta (Leerink Partners LLC)

2025Q2: The launch dynamics for vatiquinone will be different due to the experienced team already in place for pediatric neurology and the broad patient population... The company is poised for a rapid launch. - Matthew B. Klein(CEO) / Eric Pauwels(CBO)