144/A 0001628280-26-000154 0002048588 XXXXXXXX LIVE 0001674632 Beta Bionics, Inc. 001-42491 11 HUGHES Irvine CA 92618 949-427-7785 Stephen Feider Officer Common Merrill Lynch

6002 El Tordo 2nd FL PO Box 7297 Rancho Santa Fe CA 92067

20000 590680.04 44024631 01/02/2026 NASDAQ Common 01/02/2026 Stock Options Issuer N 20000 01/02/2026 Cash N Stephen Feider

11 HUGHES Irvine CA 92618

Common 12/02/2025 1427 41862.32 Stephen Feider

11 HUGHES Irvine CA 92618

Common 10/03/2025 4982 107876.96 Form144 being amended to add security sold within 3 months 01/02/2026 05/15/2025 Stephen Feider