Financial Data and Key Metrics Changes - The company is focused on next-generation gene editing using base editing technology, which allows for precise single-base changes in the genome, aiming for durable one-time therapies for serious diseases [5][6] - The lead programs include BEAM-101 for sickle cell disease and BEAM-302 for alpha-1 antitrypsin deficiency, both showing promising early clinical data [6][7] Business Line Data and Key Metrics Changes - In hematology, BEAM-101 is in mid-clinic trials, demonstrating dramatic proof of concept for sickle cell disease [6] - In the liver franchise, BEAM-302 has shown significant therapeutic effects in early phase one data, with a focus on correcting alpha-1 antitrypsin deficiency [7][10] Market Data and Key Metrics Changes - The company has received positive feedback from patients and physicians regarding the therapeutic levels achieved in the BEAM-302 program, indicating a strong market interest [18][19] - The enrollment rate for the BEAM-302 trial has been swift, with waitlists indicating high demand for the therapy [19][20] Company Strategy and Development Direction - The company aims to advance its gene editing technologies to provide functional cures for genetic diseases, with a focus on hematology and liver diseases [5][6] - Management is exploring additional dosing strategies and frequency to optimize therapeutic outcomes for BEAM-302 [13][14] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in the safety profile of their therapies, noting only grade 1 observations in initial trials [15][16] - The company anticipates ongoing interactions with the FDA regarding the regulatory path for BEAM-302, with expectations for accelerated approval based on the therapeutic data [35][36] Other Important Information - The company has received RMAT designation for BEAM-302, allowing for more frequent interactions with the FDA [35] - Management highlighted the competitive landscape, noting the presence of other gene editing approaches but emphasizing the unique advantages of their base editing technology [50][51] Q&A Session Summary Question: Can you provide an overview of the AATD program and its phase one/two study? - The company discussed the dose escalation study for BEAM-302, highlighting clear dose-responsive effects and significant therapeutic outcomes at the 60-milligram dose [9][10] Question: What are the expectations for safety and tolerability with the second dose? - Management indicated that the second dose is expected to have a similar tolerability profile as the first, with no accumulation of the lipid nanoparticles [15][16] Question: How does the company view the recent competitor data in RNA editing? - Management believes their program's profile is superior, emphasizing the importance of eliminating the toxic Z protein while maintaining high levels of functional AAT [28][30] Question: What is the regulatory strategy moving forward? - The company plans to align with the FDA on the registration path and expects to provide updates on this process in early 2026 [36][39] Question: What data can be expected in the early 2026 update? - The company aims to present data on total alpha-1 levels, functional levels, and the safety of patients with liver involvement [44][47]

Company Overview - Beam is focused on next-generation gene editing utilizing CRISPR tools, specifically through a technology called base editing, which allows for precise genome targeting and editing without double-stranded breaks [2]. Key Programs - The company has two major franchises, one of which is in hematology, targeting sickle cell disease with its lead program BEAM-101, which is considered a best-in-class option for patients suffering from this condition [3]. - The next-generation versions of the program aim to provide functional cures in more accessible ways, including non-genotoxic conditioning and in vivo delivery directly to the bone marrow [3].

Summary of Beam Therapeutics Conference Call Company Overview - Beam Therapeutics is focused on next-generation gene editing using CRISPR tools, specifically base editing, which allows precise genome targeting without double-stranded breaks [4][5] Key Programs - **Hematology Franchise**: - Lead program BIM-101 targets severe sickle cell disease, aiming to provide a best-in-class option for patients [5] - Future versions aim to deliver functional cures with less invasive methods, avoiding chemotherapy [5] - **Liver Franchise**: - Lead program BEAM-302 targets alpha-one antitrypsin deficiency, showing strong evidence of correcting the causative mutation [6][8] - Additional programs include MUM-301 for glycogen storage disease and other liver-targeted genetic medicine programs [6] Financial Position - The company is well-financed with $1.2 billion in cash, sufficient to support its pipeline through significant milestones until 2028 [6] Clinical Data and Efficacy - **BEAM-302**: - Initial Phase I trial data showed a dose response with total alpha-one levels reaching approximately 12.4 micromolar, with 90% being the corrected form (M) and only 10% being the toxic form (Z) [12][13] - The Z protein was reduced by about 80%, indicating a significant therapeutic correction [13] - The treatment is designed to be a one-time durable correction, potentially providing lifelong benefits [16] Safety and Tolerability - The LNP delivery system and base editing have shown good safety profiles, with no significant adverse effects reported [15][20] - Ongoing studies will further explore dosing and safety in patients with liver involvement [31] Future Development Plans - The company plans to explore higher single doses and multi-dose cohorts to optimize efficacy while maintaining safety [18][20] - An update on data and future steps is expected in early 2026 [21][80] Competitive Landscape - Beam Therapeutics positions BEAM-302 as a potentially best-in-class option compared to augmentation therapies and RNA editing approaches, emphasizing its one-time, permanent solution [56][57] - The company acknowledges the presence of competitors but believes its approach offers significant advantages in terms of efficacy and durability [60] Market Considerations - The market for sickle cell disease treatments is complex, with reimbursement processes still being established [84][86] - Beam Therapeutics is optimistic about its market entry, drawing parallels to the CAR T-cell therapy market's evolution [88] Patient Demand and Community Response - There is strong demand from patients for a one-time curative approach, especially given the severity of diseases like alpha-one antitrypsin deficiency [69][70] - The company is actively working to identify and educate more patients about genetic testing and treatment options [72] Regulatory Pathway - Beam Therapeutics is considering accelerated approval pathways due to the clear therapeutic signal from its data [77][79] - The company is preparing for potential regulatory discussions to expedite patient access to its therapies [79] Conclusion - Beam Therapeutics is making significant progress in gene editing therapies, with promising clinical data and a strong financial position to support its innovative programs aimed at treating severe genetic diseases [99]

Group 1 - Beam Therapeutics Inc. is a biotechnology company focused on developing precision genetic medicines through base editing technology [2] - The company has a fully integrated platform that includes gene editing, delivery, and internal manufacturing capabilities [2] - Beam's proprietary base editing technology allows for precise and efficient single base changes in targeted genomic sequences without causing double-stranded breaks in DNA [2] Group 2 - Management will participate in several upcoming investor conferences, including Citi's 2025 Biopharma Back to School Conference and the Wells Fargo Healthcare Conference [3] - The live webcasts of these events will be available on the company's website and archived for 60 days [1]

Core Insights - Beam Therapeutics has received Regenerative Medicine Advanced Therapy (RMAT) designation from the FDA for BEAM-101, a genetically modified cell therapy aimed at treating sickle cell disease (SCD) [1][2] - The RMAT designation follows an earlier orphan drug designation and is expected to facilitate collaboration with the FDA as the company progresses towards a Biologics License Application (BLA) filing [2][4] - The BEACON Phase 1/2 trial has dosed 30 patients, with promising clinical data indicating robust increases in fetal hemoglobin and reductions in sickle hemoglobin [3][5] Company Overview - Beam Therapeutics is focused on developing precision genetic medicines using its proprietary base editing technology, which allows for precise genetic modifications without double-stranded breaks in DNA [7][8] - The company aims to create a fully integrated platform for gene editing, delivery, and manufacturing to provide long-term cures for serious diseases [7][8] Product Details - BEAM-101 is an investigational therapy that utilizes autologous CD34+ hematopoietic stem and progenitor cells, which are base-edited to enhance fetal hemoglobin production [5] - The therapy is designed to mimic naturally occurring variants that lead to increased fetal hemoglobin, potentially alleviating symptoms of SCD [5][6] Clinical Trial Insights - Updated clinical data from the BEACON trial presented at the EHA 2025 Congress showed durable increases in fetal hemoglobin and no vaso-occlusive crises reported post-engraftment [3][4] - The trial is ongoing, with additional data expected by the end of 2025, further supporting the potential of BEAM-101 as a transformative treatment for SCD [2][4]

Financial Performance - Beam Therapeutics reported a loss of $1.00 per share in Q2 2025, which was better than the Zacks Consensus Estimate of a loss of $1.04 and improved from a loss of $1.11 per share in the same quarter last year [1][6] - Total revenues for the second quarter were $8.5 million, down from $11.8 million year-over-year, and missed the consensus estimate of $14 million [1][6] - Research and development expenses increased by approximately 17% to $101.8 million compared to the previous year, while general and administrative expenses decreased by around 9.1% to $26.9 million [3] Cash Position - As of June 30, 2025, Beam Therapeutics had cash, cash equivalents, and marketable securities totaling $1.2 billion, unchanged from March 31, 2025, and is expected to fund operations into 2028 [3] Pipeline Developments - The company is advancing its ex-vivo genome-editing candidate BEAM-101 in a phase I/II BEACON study for sickle cell disease, with enrollment completed for both adult and adolescent cohorts [7] - BEAM-302 is being developed for alpha-1 antitrypsin deficiency (AATD) and is currently in a phase I/II dose-escalation study, with positive initial safety and efficacy data reported [8][9] - The phase I/II study for BEAM-302 consists of two parts, with ongoing dosing and enrollment in Part B for AATD patients with mild-to-moderate liver disease [10][11] Market Performance - Shares of Beam Therapeutics have declined by 24.6% year-to-date, contrasting with a 1.9% rise in the industry [2]

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-39208 Beam Therapeutics Inc. (Exact name of Registrant as specified in its Charter) FORM 10-Q (Mark One) Delaware 81-5238376 (State or other jurisdict ...

Exhibit 99.1 Beam Therapeutics Reports Second Quarter 2025 Financial Results and Provides Update on BEAM-302 Development Progress in Alpha-1 Antitrypsin Deficiency (AATD) With 17 Patients Dosed in the Phase 1/2 Trial, BEAM-302 Continues to Demonstrate Durable Correction of the Disease-causing Mutation, Restoration of AAT Physiology, and a Well Tolerated Safety Profile BEAM-302 Development Progress and Clinical Update Positive initial safety and efficacy data from the Phase 1/2 trial of BEAM-302 were previou ...

Core Insights - Beam Therapeutics has made significant progress in its clinical trials, particularly with BEAM-101 for sickle cell disease and BEAM-302 for alpha-1 antitrypsin deficiency, with key data updates expected by early 2026 [2][11][7] Financial Performance - As of June 30, 2025, the company reported cash, cash equivalents, and marketable securities totaling $1.2 billion, an increase from $850.7 million at the end of 2024, providing a cash runway expected to support operations into 2028 [10][11] - Research and Development (R&D) expenses for Q2 2025 were $101.8 million, up from $87.0 million in Q2 2024, while General & Administrative (G&A) expenses decreased to $26.9 million from $29.6 million in the same period [11][16] - The net loss for Q2 2025 was $102.3 million, or $1.00 per share, compared to a net loss of $91.1 million, or $1.11 per share, in Q2 2024 [11][16] Clinical Development Progress - The BEACON Phase 1/2 trial of BEAM-101 has completed dosing for 30 patients, including the first adolescent patient, with plans for further data presentation at the end of 2025 [11][2] - The BEAM-302 trial has dosed 17 patients, showing promising results in restoring alpha-1 antitrypsin levels and reducing disease-causing mutations, with a full program update expected in early 2026 [3][5][7] - The company is expanding the dose exploration phase of BEAM-302 and has initiated enrollment in Part B of the trial, targeting patients with mild to moderate liver disease [4][5] Regulatory Designations - BEAM-101 received orphan drug designation from the FDA, aimed at supporting the development of treatments for rare diseases [11] - BEAM-302 was granted both Regenerative Medicine Advanced Therapy (RMAT) and orphan drug designations by the FDA, facilitating its development for serious unmet medical needs [11]

Company Overview - Beam Therapeutics Inc. (BEAM) shares increased by 5.7% to $21.46 in the last trading session, with a notable trading volume, and have gained 12.3% over the past four weeks [1][2] - The recent price rise is linked to investor optimism regarding the company's pipeline, particularly after the FDA granted orphan drug designation to BEAM-101 for treating sickle cell disease [2] Financial Performance - The company is projected to report a quarterly loss of $1.04 per share, reflecting a year-over-year increase of 6.3%, with expected revenues of $13.79 million, up 17.1% 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 earnings estimate revisions [4] Industry Context - Beam Therapeutics operates within the Zacks Medical - Biomedical and Genetics industry, which includes other companies like Exact Sciences (EXAS) [5] - Exact Sciences has seen a 29.7% increase in its consensus EPS estimate over the past month, indicating a significant change from the previous year [6]