Investor Presentation March 2023

Acquisition Building Blocks - 14 Transactions in 48 Months July 2018 May 2019 December April/May 2019 July/Aug. Oct. / Nov. 2021 2021 2021 Dec. 2021/ Jan. 2022 Genetic Toxicology SEVENTHWAVE Advice. Analysis. Answers. Discovery In Vivo and In Vitro Pharmacology Toxicology Drug Metabolism • Pathology Pharmacokinetics SMITHERS A VANZA Development and Reproduction •Juvenile Assessments • Fertility • Embryonic Development • • PreClinical RESEARCH SERVICES INC. HTL HistoTox Lab Surgical Models •Invasive Approaches Wound Healing Medical Devices • Imaging • BolderBioPATH RO Histopathology Cell-typing Biodistribution Pharmacology/ In Vivo Models Millipore SIGMA BioRelianceⓇ Assets From MilliporeSigma's BioReliance Portfolio GATEWAY PHARMACOLOGY LABORATORIES Cardiovascular/Renal Pharmacology • In Vivo Laboratory Support Plato BioPharma INCORPORATED In Vivo Pharmacology • • Cardiovascular . Renal Pulmonary Hepatic Therapy ++++ ENVIGO Research Models • Large Models Small Models • Teklad Diets & Bedding • Research Model Support Services RSI ROBINSON SERVICES INCORPORATED Research Models • Small Model Client • • Relationships ILS Advancing Science, Improving Lives Toxicology In Vivo, In Vitro & Computational Toxicology Histology & Pathology US NHP ORENT Business Research Models Domestic NHP Colony • April / July 2022 HISTION Histology Histology & analysis • Antibody labeling Histomorphometric analysis Protypia Pathology Quantification of drug target systems Protein-level pharmacology and pathology Inotiv has a proven track record integrating accretive acquisitions enhancing organic growth 17

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