Business Description

We are a clinical-stage biopharmaceutical company dedicated to reinventing the treatment of human disease through the development of innovative, highly differentiated oral medicines that address significant health problems and meaningfully improve patients’ lives. We are committed to advancing novel technologies to address targets that have known disease-causing biology, but which have not been drugged, or have been inadequately drugged, often based on limitations of existing technologies. Our approach is intended to discover and develop a new generation of medicines in a disease-agnostic manner. We are a leader in targeted protein degradation (TPD), a next-generation small molecule therapeutic modality that engages the body’s natural cellular recycling system to selectively eliminate disease-causing proteins. Our objective is to develop molecules that are both potent and highly selective, creating the unique potential to address diseases that are poorly served by current treatment options. To date, we have progressed multiple programs into clinical development and expect to advance at least one new molecular entity into clinical testing annually. We intend to leverage our drug development expertise to become a fully integrated biopharmaceutical company with an industry-leading pipeline of novel medicines. Our current discovery and development efforts are primarily directed at high-value targets in immunology. We believe there are more than 160 million patients in the United States, Europe and Japan that are diagnosed with some of the most prevalent immune-inflammatory diseases that our programs have the potential to address, nearly half of whom remain untreated. Of those treated, most patients are treated with therapies that do not treat the underlying diseases but mostly their symptoms. As a result, only a small percentage of patients, which we believe to be approximately 3% of the diagnosed population with moderate to severe inflammatory diseases, are currently treated with systemic advanced therapies, mostly injectable biologics. While generally efficacious, biologics have drawbacks. Biologics tend to be more expensive to manufacture, and the cost burden ultimately falls on patients and payors. Patient access to therapy can also be a challenge, as biologics can be more complex to prescribe and reimburse than small molecule medicines. Additionally, biologics are administered as injections - which may result in injection site reactions or pain - a less preferred route of administration as compared to oral medications, which offer greater flexibility for patients. We believe we have the potential to deliver a compelling value proposition to a significant underserved patient population: small molecule medicines with biologics-like activity through the convenience of a daily, oral pill. Our publicly disclosed immunology programs target STAT6, IRF5 and IRAK4, each of which addresses targets within validated pathways, providing the opportunity to treat a broad range of diseases. We are developing KT-621 as part of our STAT6 program, and recently initiated the BROADEN2 Phase 2b clinical trial in adult and adolescent patients with moderate to severe Atopic Dermatitis (AD) and the BREADTH Phase 2b clinical trial in adult patients with moderate to severe asthma. We are also developing KT-579 as part of our oral IRF5 degrader program, and we recently initiated a Phase 1 clinical trial in healthy volunteers. We are collaborating with Sanofi S.A. (“Sanofi”) on the development of our IRAK4 degrader, KT-485/SAR447971, which Sanofi plans to advance into clinical testing in 2026. In June 2025, we announced a strategic collaboration with Gilead Sciences, Inc. (“Gilead”) to develop novel oral molecular glue degraders for CDK2. Our additional early undisclosed pipeline programs focus on addressing high impact targets that have been elusive to conventional modalities and that drive the pathogenesis of multiple serious diseases with significant unmet medical needs. In addition to our immunology focus, we also have research initiatives in other therapeutic areas. Additionally, we believe many of our key discovery and development capabilities have broad applicability, creating an opportunity for us to develop impactful therapies leveraging small-molecule modalities in addition to TPD.…