Core Insights - Stoke Therapeutics, a biotech company focused on rare genetic diseases, experienced a notable insider sale by Chief Medical Officer Barry Ticho, who sold 5,358 shares for approximately $167,115 following significant share price gains in 2025 [1][8]. Company Overview - Stoke Therapeutics specializes in developing antisense oligonucleotide (ASO) medicines targeting severe genetic diseases, with lead candidates STK-001 for Dravet syndrome (currently in Phase I/IIa trials) and STK-002 for autosomal dominant optic atrophy (in preclinical stage) [5][7]. - As of December 5, 2025, the company's stock price was $31.19, with a market capitalization of $1.74 billion and a revenue of $205.63 million for the trailing twelve months (TTM) [4]. Financial Performance - The company reported $328.6 million in cash, cash equivalents, and marketable securities, alongside $183 million in year-to-date revenue, indicating a strong financial position expected to fund operations until 2028 [9]. Insider Activity - Barry Ticho's recent sale of shares, while smaller than his historical median sale, represented a larger proportion of his remaining holdings (21.30% compared to a long-term median of 6.84%), reflecting a decline in his available share base [6]. - The shares were sold at a weighted average price of approximately $31.19, closely aligning with recent trading levels, indicating minimal price slippage [6]. Market Context - Stoke Therapeutics' stock price has appreciated significantly, reaching a 52-week high of $38.69 on October 16, 2025, and remaining above $30 per share in December, driven by favorable clinical trial data and strategic collaborations, particularly with Biogen [8][9].

Biotech stocks showed sharp moves in extended trading, with several names rebounding after steep regular-session losses. Fresh clinical data, FDA designations, and financing announcements drove momentum across the sector, highlighting catalysts that investors are watching closely.Stoke Therapeutics, Inc. (STOK) traded up to $33.95 (+11.42%) post-market hours, after closing at $30.47 (-7.67%). The rebound followed data presentations with Biogen (BIIB) at the 2025 AES Annual Meeting, supporting the potential ...

Core Insights - The BUTTERFLY study highlights the significant impact of Dravet syndrome on children's neurodevelopment and functioning, indicating a need for new disease-modifying treatments [1][3][5] Company Overview - Biogen Inc. is a leading biotechnology company focused on innovative science to develop new medicines and create value for shareholders [8] - Stoke Therapeutics specializes in RNA medicine aimed at restoring protein expression, with its lead candidate zorevunersen under evaluation for Dravet syndrome [10] Study Findings - The BUTTERFLY study involved children and adolescents aged 2 to 18, assessing the effects of Dravet syndrome on neurodevelopment over two years [2][7] - Results showed that neurodevelopment plateaued at approximately two years of age, leading to a widening gap compared to neurotypical peers [5] - Major motor seizure frequency increased by 10.6% over the study period, with an average of 14.3 seizures per 28 days at baseline [5] Disease Characteristics - Dravet syndrome is characterized by recurrent seizures and significant cognitive and behavioral impairments, primarily caused by mutations in the SCN1A gene [4][6] - Over 90% of patients continue to experience seizures despite treatment with available anti-seizure medicines, leading to a poor quality of life [4][6] Future Implications - The findings from the BUTTERFLY study provide a baseline for understanding the potential impact of future disease-modifying therapies for Dravet syndrome [3][5]

Summary of Stoke Therapeutics FY Conference Call Company Overview - **Company**: Stoke Therapeutics (NasdaqGS:STOK) - **Industry**: Biotechnology, focusing on genetic diseases, specifically Dravet syndrome and other haploinsufficient diseases Key Points and Arguments Leadership Transition - Ian Smith transitioned from interim CEO to full-time CEO, having been associated with Stoke for nearly three years, including roles as a board member and advisor [2][3] Product and Pipeline - The primary focus is on a treatment for Dravet syndrome, a genetic disorder characterized by severe seizures due to a lack of NAV1.1 protein in the brain, caused by a mutated SCN1A gene [6][10] - The treatment aims to upregulate the NAV1.1 protein, addressing the root cause of the disease, leading to significant reductions in seizure frequency (up to 80-85% median reduction) and potential improvements in neurodevelopment [10][11] - The company is currently in Phase 3 trials, with a pipeline that includes other haploinsufficient diseases in Phase 1 or preclinical stages [4][6] Clinical Data and Efficacy - The treatment has shown sustained and durable reductions in seizures over nearly four years, which is unique compared to traditional anti-seizure medications [10][14] - Cognitive and behavioral improvements have been observed, with children showing enhanced communication and motor skills as measured by the Vineland 3 score [11][12] - The safety profile is generally well-tolerated, with 90% of patients from the Phase 1/2 study continuing into the open-label extension (OLE) study [13][14] Phase 3 Study Details - The Phase 3 study includes a six-week screening period, with a primary endpoint focused on seizure reduction at week 28 and secondary endpoints at week 52 [19][20] - The study is well-powered with a 90% confidence level for a 0.01 result, and over 25 patients have been dosed so far [20][23] - Full enrollment of 170 patients is expected by the second half of 2026, with data readout anticipated in the second half of 2027 [23][24] Regulatory and Commercial Strategy - The company received breakthrough therapy designation from the FDA for the treatment of Dravet syndrome in December 2024, acknowledging the safety and efficacy profile [25][26] - A multidisciplinary meeting with the FDA is scheduled for December to discuss the drug's mechanism of action and safety data, with the potential to expedite the approval pathway [25][27] - The commercial opportunity for Dravet syndrome is significant, with an estimated 15,000 to 20,000 diagnosed patients in the U.S. and a similar number outside the U.S. [31][32] Other Programs - The company is also developing a treatment for Autosomal Dominant Optic Atrophy (ADOA) in Phase I, targeting the OPA1 gene to improve mitochondrial function and vision [34][35] - A preclinical program for SYNGAP1, which involves seizures and neurodevelopment issues, is expected to have a development candidate by early 2026 [37] Financial Health - The company reported a strong financial position with approximately $400 million in cash, expected to fund operations through mid-2028, including the Phase 3 study and other programs [38] Additional Important Information - The treatment's administration involves lumbar puncture, which may lead to transient elevations in cerebrospinal fluid (CSF) protein, but no clinical manifestations have been observed [15][16] - The company is focused on educating the advocacy community and key opinion leaders to drive demand for the study [23][24]

Financial Data and Key Metrics Changes - The company ended Q3 2025 with $328.6 million in cash, cash equivalents, and marketable securities, and raised an additional $48.7 million post-quarter through an ATM [20][21] - Total revenue for the quarter was $10.6 million, up from $4.9 million in Q3 2024, primarily due to a $6.7 million increase from collaboration with Biogen [20][21] - Net loss for Q3 was $38.3 million, or $0.65 per share, compared to a net loss of $26.4 million, or $0.47 per share, in the prior year, driven by increased operating expenses [20][21] Business Line Data and Key Metrics Changes - The company has made significant progress in the clinical development of zorevunersen, with over 200 patients identified for the phase 3 study, an increase from 150 previously reported [5][18] - R&D expenses rose to $37.7 million from $22.2 million a year ago, reflecting spending on the phase 3 study and early-stage pipeline advancements [20][21] - SG&A expenses increased to $16 million from $12.7 million, indicating investment in commercial capabilities [20][21] Market Data and Key Metrics Changes - The company is preparing for a meeting with the FDA to discuss expedited regulatory pathways for zorevunersen, which has received breakthrough therapy designation [6][19] - The market opportunity for zorevunersen is growing due to increased awareness of Dravet syndrome and the potential disease-modifying effects of the drug [6][19] Company Strategy and Development Direction - The company aims to rapidly scale its business to reach as many patients as possible with zorevunersen, focusing on medical affairs and commercial leadership [7][8] - There is a strategic emphasis on developing additional disease-modifying medicines, particularly in haploinsufficient disease areas [8][9] - The company is also launching a disease awareness campaign to improve diagnosis rates of Dravet syndrome through genetic testing [8] Management's Comments on Operating Environment and Future Outlook - Management expressed optimism about the company's growth trajectory and the potential impact of zorevunersen on patients with Dravet syndrome [3][22] - The company is committed to educating the medical community and increasing awareness of Dravet syndrome [22] - Management highlighted the importance of the upcoming FDA meeting and the potential for expedited pathways to bring zorevunersen to market [19][22] Other Important Information - The company is actively recruiting for the phase 3 Emperor study, with 30 sites in the U.S., U.K., and Japan [17][18] - The first patient was randomized in August, and over 20 patients have been randomized so far [18] - The company anticipates completing enrollment in the second half of 2026, with data expected in late 2027 [39] Q&A Session Summary Question: What potential scenarios might be anticipated based on the PDD meeting with the FDA? - The company is preparing to present extensive data, including four-year safety data, to the FDA, which could lead to expedited pathways or a request to continue with the phase 3 study [26][27] Question: How clinically meaningful are the cognitive and behavioral improvements on the VABS-III data? - A change of one to three points on the VABS-III scale is considered clinically meaningful, with significant improvements observed in communication skills [31][33] Question: Can the company pursue early approval based solely on seizure reduction? - Yes, the company could seek approval based on seizure reduction, but it intends to pursue a label that reflects the disease-modifying potential of zorevunersen [37] Question: What are the common reasons for screen failure in the Emperor study? - Common reasons include not meeting the minimum seizure count required for enrollment, illness during the screening period, or family commitments [78] Question: How does the company plan to handle the differences in dosing schedules between phase 1/2 and phase 3 studies? - The company acknowledges the differences but believes the data from phase 1/2 and the open-label extension supports the dosing regimen planned for phase 3 [66]

Stoke Therapeutics Third Quarter 2025 Business Update Webcast for Investors & Analysts November 4, 2025 © COPYRIGHT 2025 | STOKE THERAPEUTICS | 1 Forward-Looking Statements and Other Legal Notices This presentation has been prepared by Stoke Therapeutics, Inc. ("Stoke" or "us") for informational purposes only and not for any other purpose. Nothing contained in this presentation is, or should be construed as, a recommendation, promise or representation by the presenter(s) or Stoke or any officer, director, e ...

Core Viewpoint - Stoke Therapeutics, Inc. is focused on RNA medicine to restore protein expression and is developing zorevunersen as a potential disease-modifying treatment for Dravet syndrome [1] Company Overview - Stoke Therapeutics is a biotechnology company dedicated to harnessing the body's potential through RNA medicine [1] - The company has a lead investigational medicine, zorevunersen, which is positioned as a first-in-class treatment for Dravet syndrome [1] Upcoming Events - Management will host a webcast and conference call for analysts and investors on November 4, 2025, at 4:30 p.m. E [1]

Core Insights - Stoke Therapeutics and Biogen announced longer-term follow-up analyses from ongoing open-label extension studies of zorevunersen, indicating its potential as a disease-modifying medicine for Dravet syndrome [1] Company Overview - Stoke Therapeutics is a biotechnology company focused on restoring protein expression through RNA medicine [1] - Biogen Inc. is a biotechnology company that collaborates with Stoke Therapeutics on the zorevunersen studies [1] Product Development - The ongoing studies of zorevunersen are aimed at evaluating its effectiveness in treating Dravet syndrome, a severe form of epilepsy [1] - The new results from the studies support the potential of zorevunersen as a disease-modifying treatment [1]

Core Insights - Stoke Therapeutics, Inc. (STOK) shares increased by 11.7% to close at $30.5, with a notable trading volume compared to normal sessions, and a total gain of 23.7% over the past four weeks [1][2] Company Developments - The rise in stock price is linked to increased investor confidence in Stoke Therapeutics' lead candidate, zorevunersen, which is being developed as a first-in-class potential disease-modifying therapy for Dravet syndrome [2] - The company appointed Ian F. Smith as the new chief executive officer earlier this week [2] Financial Expectations - The company is projected to report a quarterly loss of $0.56 per share, reflecting a year-over-year decline of 19.2%, while revenues are expected to reach $5.7 million, an increase of 16.6% from the previous year [3] - The consensus EPS estimate for the quarter has remained unchanged over the last 30 days, indicating that stock price movements may not sustain without trends in earnings estimate revisions [4] Industry Context - Stoke Therapeutics is part of the Zacks Medical - Biomedical and Genetics industry, which includes other companies like Janux Therapeutics, Inc. (JANX), whose stock closed 6.7% higher at $24.2, but has seen a return of -4.6% over the past month [5] - Janux Therapeutics' consensus EPS estimate has changed by +0.1% over the past month to -$0.6, representing a year-over-year change of -17.7% [6]

Core Insights - Stoke Therapeutics has appointed Ian F. Smith as Chief Executive Officer, who has been serving as Interim CEO since March 2025 and has been a board member since 2023 [1][3] - The company is advancing its lead investigational medicine, zorevunersen, in a global Phase 3 study for Dravet syndrome, a severe developmental and epileptic encephalopathy [2][8] - The collaboration with Biogen Inc. for zorevunersen allows Stoke to retain exclusive rights in the U.S., Canada, and Mexico, while Biogen holds rights for the rest of the world [2] Company Leadership - Ian F. Smith is recognized for his deep experience in rare disease drug development and has a strong track record in building and leading teams [3][4] - Arthur Tzianabos, who has been on the board since 2018, will resume his role as Chairman after serving as Executive Chairman during the CEO search [1][6] Clinical Development - The pivotal Phase 3 EMPEROR study for zorevunersen has commenced, contributing to the company's growth and value creation for shareholders [3] - Stoke is also expanding its pipeline with a second clinical program targeting Autosomal Dominant Optic Atrophy [3] Company Background - Stoke Therapeutics focuses on restoring protein expression through RNA medicine, utilizing its proprietary TANGO approach to develop antisense oligonucleotides [8] - The company is headquartered in Bedford, Massachusetts, and aims to address diseases caused by a loss of approximately 50% of normal protein levels [8]