BioAtla Investor Presentation Deck

Radiographic response to CAB-AXL (BA3011) monotherapy March 6, 2023 - Baseline scan September 20, 2023 Lymphangitic carcinomatosis Subcarinal mass 32 Red circle on left indicates subcarinal mass, resolved on right. bicatla Rotow J, Dy GK, Camidge DR. Poster presented at: International Association for the Study of Lung Cancer 2023 North America Conference on Lung Cancer; December 1-3, 2023; Chicago, IL. 53 yo male with adenocarcinoma of the lung, PDL1 <1%, TP53 mutation, 3 prior lines of tx (carbo/pem/pembro, docetaxel, durva/treme/selumetinib) March 6, 2023 Baseline scan September 20, 2023 1201/157 1201/ Subcarinal mass Pleural effusion Red circle on top indicates subcarinal mass, resolved below. Note also improvement in malignant pleural effusion. BioAtla| Overview 36

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