144 0001478067 XXXXXXXX LIVE 0000788920 PRO DEX INC 000-14942 2361 MCGAW AVENUE IRVINE CA 92614 949-769-3231 Swenson Nicholas John Director Common Stock Piper Sandler & Co Inc

800 Nicollet Mall Minneapolis MN 55402

4526 232636.40 3261043 04/02/2025 NASDAQ Common Stock 04/02/2020 Open Market Purchase N/A N 4526 04/02/2020 CASH Y This Form 144 filing is being conducted on behalf of AO Partners I LP, whom Nicholas Swenson is a beneficial owner 04/02/2025 11/13/2024 Alex Johnson, a duly authorized representative of Piper Sandler & Co Corporate & Venture Services FA, as attorney-in-fact for Nicholas Swenson