Oncolytics Biotech ONCY · USD

We are a clinical-stage biopharmaceutical company developing pelareorep, a well-tolerated intravenously delivered immunotherapeutic agent that selectively replicates in RAS-mutated tumors and activates the innate and adaptive immune systems and weakens tumor defense mechanisms. This improves the ability of the immune system to fight cancer, making tumors more susceptible to a broad range of oncology treatments.

Pelareorep is a proprietary isolate of reovirus, a naturally occurring, non-pathogenic double-stranded RNA (“dsRNA”) virus commonly found in environmental waters. Pelareorep has shown promising results in changing the tumor microenvironment (“TME”). This creates a more immunologically favorable TME, making the tumor more susceptible to various treatment combinations. These treatments include chemotherapies, checkpoint inhibitors (“CPIs”), and other immuno-oncology approaches such as CAR T therapies, bispecific antibodies, and RAS or CDK4/6 inhibitors. Pelareorep induces a new army of tumor-reactive T cells, helps these cells to infiltrate the tumor through an inflammatory process, and upregulates the expression of PD-1/PD-L1. By priming the immune system with pelareorep, we believe we can increase the proportion of patients who respond to various cancer treatments, including immunotherapies, especially in cancers where existing treatment regimens have failed or provided limited benefit.

Quoted from its 10-K, filed 30 Mar 2026. Read the filing on SEC.gov ↗