Investor Presentation March 2023

Startup Building Blocks - Services and Capabilities Developed Internally 2018 MP&T . Mechanistic Pharmacology and Toxicology Creates capabilities in cellular and molecular biology to support diverse client needs Safety • April May 2019 Pharmacology Created canine cardiovascular and respiratory safety pharmacology using surgically- implanted telemetry equipment In process of additional capacity 2019 Juvenile Toxicology Enhanced capabilities in • developmental toxicology, specifically focused on learning and memory behaviors • Announcement date December 2020 SEND Reporting Internalized the process of developing and submitting SEND databases for regulatory review February 2021 Clinical Pathology Hired specialty expertise in clinical pathology to provide expert interpretation of clinical pathology data supporting pharmacology and toxicology studies May May 2021 June/Aug. 2021 2022 Histopathology for Safety Pharmacology Devices Creating the Biotherapeutics Announced plans to develop analytical capabilities to support large molecule biotherapeutics, biomarkers, and cell-based analysis and therapeutics • • capacity to process and interpret the biocompatibility and efficacy of broad-based devices Genetic Toxicology Building capabilities to evaluate mutagenicity and clastogenicity in support of first-in- human dosing Created non-human primate cardiovascular and respiratory safety pharmacology using surgically-implanted telemetry equipment November 2021 June 2021 December 2020 Completion dates March 2022 September 2022 April 2023 Still in process of building out capacity April 2022/ March 2023 Estimated completion July 2023 16

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