Financial Performance - Prime Medicine Inc. reported a net loss of $201.1 million for the year 2025, with R&D expenses at $160.6 million, indicating a stable investment in research despite financial losses [1] - The company ended the year with $191.4 million in cash, cash equivalents, and investments, providing a financial runway into 2027 [1] Strategic Focus - The company is shifting its focus toward its in vivo liver franchise, specifically targeting Wilson Disease and Alpha-1 Antitrypsin Deficiency [2] - Prime Medicine plans to submit an IND or CTA for the Wilson Disease program in the first half of 2026, followed by a mid-2026 submission for the Alpha-1 Antitrypsin Deficiency program [2] Clinical Developments - Prime Medicine is actively engaging with the FDA to pursue an accelerated approval pathway for its CGD candidate, PM359, which has shown positive Phase 1/2 data [3] - The company intends to submit a BLA for PM359 once final alignment with the FDA is achieved, potentially making it the first Prime Edited therapy available to patients [3] Partnerships and Support - The company is progressing its Cystic Fibrosis program with support from the Cystic Fibrosis Foundation and continues its CAR-T partnership with Bristol Myers Squibb [2]

Core Insights - Prime Medicine is advancing its gene editing technology, Prime Editing, to develop one-time curative genetic therapies, with a focus on addressing significant genetic disorders such as Wilson Disease and Alpha-1 Antitrypsin Deficiency [2][3] Financial Overview - For the year ended December 31, 2025, Prime Medicine reported a net loss of $201.1 million, compared to a net loss of $195.9 million in 2024 [14] - Research and development (R&D) expenses increased to $160.6 million in 2025 from $155.3 million in 2024, primarily due to license and intellectual property costs [14] - As of December 31, 2025, the company had cash, cash equivalents, investments, and restricted cash totaling $191 million, providing a cash runway into 2027 [1][9] Pipeline and Regulatory Milestones - Prime Medicine plans to file an Investigational New Drug (IND) application for its Wilson Disease program in the first half of 2026 and for its Alpha-1 Antitrypsin Deficiency program in mid-2026, with initial clinical data expected in 2027 [1][3] - The company is actively engaging with the FDA regarding PM359 for Chronic Granulomatous Disease (CGD) and intends to submit a Biologics License Application (BLA) following final alignment [1][6] Research and Development Focus - The company is focused on advancing its in vivo gene editing programs, particularly for Wilson Disease and Alpha-1 Antitrypsin Deficiency, while also progressing a Cystic Fibrosis program with support from the Cystic Fibrosis Foundation [5][11] - Prime Medicine has reported breakthrough data for PM359, which supports the potential for accelerated approval in the U.S. [2][4] Collaboration and Strategic Vision - Prime Medicine aims to expand its Prime Editing platform through collaborations, including ongoing partnerships with Bristol Myers Squibb for CAR-T products [5][11] - The company envisions delivering transformative therapies that provide durable and potentially lasting cures, leveraging its comprehensive intellectual property estate [2]

2 Delivering on the promise of Prime Editing Corporate Presentation March 2026 1 Forward Looking Statements This presentation contains forward-looking statements of Prime Medicine, Inc. ("Prime", "we" or "our") within the meaning of the Private Securities Litigation Reform Act of 1995, as amended. These forward-looking statements contain information about our current and future prospects and our operations, which are based on currently available information. All statements other than statements of historica ...

Delivering on the promise of Prime Editing Corporate Presentation January 2026 1 Forward Looking Statements This presentation contains forward-looking statements of Prime Medicine, Inc. ("Prime", "we" or "our") within the meaning of the Private Securities Litigation Reform Act of 1995, as amended. These forward-looking statements contain information about our current and future prospects and our operations, which are based on currently available information. All statements other than statements of historica ...

Core Insights - Prime Medicine Inc. (NASDAQ:PRME) is recognized as a promising biotech penny stock, with LifeSci Capital initiating coverage and assigning an Outperform rating along with a $6 price target, emphasizing its innovative gene editing treatments for high unmet medical needs [1][2] Group 1: Company Overview - Prime Medicine Inc. focuses on delivering genetic therapies through gene editing technology to address a wide range of diseases in the US [3] Group 2: Clinical Developments - The company announced Phase 1/2 clinical data for its investigational therapy PM359, published in the New England Journal of Medicine, demonstrating the first-in-human safety and efficacy of Prime Editing [1] - In the clinical trial involving PM359, two patients (one adult and one pediatric) with chronic granulomatous disease (CGD) showed rapid neutrophil and platelet engraftment, achieving 69% and 83% dihydrorhodamine-positive neutrophils by Day 30, significantly exceeding the 20% threshold for clinical benefit [2] - Both participants in the trial have remained free of new CGD-related complications, indicating successful long-term gene correction in hematopoietic stem cells [2] Group 3: Market Potential - LifeSci Capital expressed optimism regarding the commercial and clinical opportunities for Prime Medicine, particularly in the treatment landscapes of Wilson's disease and alpha-1 antitrypsin deficiency (AATD) [1]

Group 1 - Prime Medicine, Inc. (NASDAQ:PRME) is recognized as one of the 12 best genomics stocks to invest in [1] - The New England Journal of Medicine published Phase 1/2 clinical results for PM359, an experimental autologous hematopoietic stem cell therapy for p47phox chronic granulomatous condition, showing promising safety and effectiveness [2] - In the Phase 1/2 trial, two patients exhibited fast neutrophil engraftment with 69% and 83% dihydrorhodamine-positive neutrophils by Day 30, and no new CGD-related problems were reported post-infusion [2] Group 2 - LifeSci Capital initiated coverage of Prime Medicine, Inc. with an Outperform rating and a $6 price target, highlighting the company's potential in gene editing treatments for conditions with significant unmet demand [3] - The firm expressed optimism regarding the potential of Prime Medicine's treatments for Wilson's disease and alpha-1 antitrypsin deficiency [3] - Prime Medicine focuses on providing genetic medicines through gene editing technology known as Prime Editing [4]

Group 1: Biotech Sector Overview - The healthcare sector has become the top-performing sector over the last 3 months as investors rotate away from high-valuation tech and AI stocks [1] - The biotech sub-sector is highlighted as particularly interesting for 2026, with the XBI (SPDR S&P Biotech ETF) serving as a proxy for small and mid-cap companies [1] - A historic shift in sentiment is observed, with the XBI achieving a rare streak of 6 consecutive months of positive returns [1] Group 2: Market Dynamics and Investor Sentiment - Investors are moving towards healthcare due to concerns over concentrated tech positions and favorable valuations in healthcare [1] - Clarity around drug pricing is identified as a major positive catalyst for pharmaceutical and biotech companies [1] - A surge in M&A activity is noted, with over 20 deals worth more than $500 million in 2025 alone [1] Group 3: Small-Cap Market Insights - The small-cap trade is expected to continue, but leadership within this category is set to change, focusing back on earnings growth [2] - The recent rally in the Russell index has been led by speculative areas, including biotech companies, which currently do not produce earnings [2] - Approximately 30% of trading volume is in stocks priced under $5, indicating young investors' interest in speculative names [2] Group 4: Biotech Penny Stocks - Rezolute Inc. (NASDAQ:RZLT) is identified as a top biotech penny stock with an average upside potential of 68.54% [7] - Prime Medicine Inc. (NASDAQ:PRME) is also highlighted, with an average upside potential of 71.43% and recent positive clinical data [11] - Both companies are involved in innovative treatments, with Rezolute focusing on congenital hyperinsulinism and Prime Medicine on gene editing therapies [10][14]

Core Insights - Prime Medicine, Inc. has published Phase 1/2 clinical data for PM359, an investigational autologous hematopoietic stem cell product for p47phox chronic granulomatous disease (CGD), in the New England Journal of Medicine [1][2] - The data indicates rapid neutrophil and platelet engraftment, durable restoration of NADPH oxidase activity, and early clinical benefits without safety concerns, marking the first-in-human demonstration of Prime Editing's safety and efficacy [2][3] Company Overview - Prime Medicine is focused on developing a new class of one-time curative genetic therapies using its proprietary Prime Editing platform, which aims to make precise edits in genes while minimizing unwanted modifications [4] - The company is advancing a diversified portfolio of therapeutic programs targeting liver, lung, immunology, and oncology diseases, with plans to expand into additional genetic and immunological diseases, cancers, and infectious diseases [5] Clinical Trial Details - The Phase 1/2 trial involved two patients with a history of CGD complications, both of whom showed significant improvements, including 69% and 83% dihydrorhodamine-positive neutrophils by Day 30, exceeding the 20% threshold for clinical benefit [6] - Both patients remained free of new CGD-related complications post-infusion, with one patient stopping mesalamine treatment without flare-ups, and the other showing decreased levels of fecal calprotectin [6]

Core Insights - Prime Medicine is advancing its pipeline with new preclinical data for PM577 in Wilson's Disease (WD) to be presented at AASLD, with plans to file an IND and/or CTA in the first half of 2026 and initial clinical data expected in 2027 [1][4][5] - The company has nominated PM647 as a development candidate for Alpha-1 Antitrypsin Deficiency (AATD), also on track to file an IND and/or CTA in mid-2026, with initial clinical data anticipated in 2027 [1][5] - The leadership team has been strengthened with the appointment of Matthew Hawryluk, Ph.D., M.B.A. as Chief Business Officer [1][4] Pipeline Developments - Prime Medicine is focused on in vivo programs targeting Wilson's Disease and Alpha-1 Antitrypsin Deficiency, with IND and/or CTA filings expected in 2026 and initial clinical data in 2027 [5][6] - The company is also advancing a Cystic Fibrosis program supported by the Cystic Fibrosis Foundation and developing Prime Edited CAR-T products in partnership with Bristol Myers Squibb [6] Financial Performance - For the quarter ended September 30, 2025, R&D expenses were $44.0 million, up from $40.3 million in the same period of 2024, primarily due to license and intellectual property costs [10][12] - General and Administrative expenses decreased to $11.2 million from $14.1 million year-over-year, attributed to reduced personnel costs [10][12] - The net loss for the quarter was $50.6 million, compared to a net loss of $52.5 million in the prior year [10][12] Cash Position - As of September 30, 2025, the company reported cash, cash equivalents, and investments totaling $213.3 million, which is expected to fund operations into 2027 [10][21]

Core Insights - Prime Medicine is advancing its pipeline with new preclinical data for PM577 in Wilson's Disease and has nominated PM647 for Alpha-1 Antitrypsin Deficiency, with both expected to file IND and/or CTA applications in the coming years [1][2][3] Pipeline Developments - The company is focused on liver-targeted programs for Wilson's Disease and Alpha-1 Antitrypsin Deficiency, with IND filings anticipated in H1 2026 for AATD and H1 2027 for WD, and initial clinical data expected in 2027 [3][4] - Prime Medicine is also developing a Cystic Fibrosis program and exploring collaborations, including a partnership with Bristol Myers Squibb for Prime Edited CAR-T products [4][11] Leadership and Corporate Updates - Matthew Hawryluk, Ph.D., M.B.A., has been appointed as Chief Business Officer to enhance business development and strategic collaborations [1][10] - A virtual KOL event is scheduled for November 12, 2025, to discuss the company's strategy for Wilson's Disease [1][10] Financial Performance - For Q3 2025, Prime Medicine reported R&D expenses of $44.0 million, up from $40.3 million in Q3 2024, primarily due to increased license and intellectual property costs [10][20] - General and Administrative expenses decreased to $11.2 million from $14.1 million year-over-year, attributed to workforce reductions [10][20] - The net loss for Q3 2025 was $50.6 million, slightly improved from a net loss of $52.5 million in Q3 2024 [10][20] - As of September 30, 2025, the company had cash and investments totaling $213.3 million, sufficient to fund operations into 2027 [8][18]