Insider Transaction Report

Stephen Feider, acting as Attorney-in-Fact for Saint Sean, reported the sale of 5,641 shares of Beta Bionics, Inc. Common Stock on September 3, 2026. The sale was conducted under a Rule 10b5-1 Plan adopted on September 5, 2025. The weighted average sale price was $20.0778, with prices ranging from $20.00 to $20.1696. Following this transaction, Saint Sean holds 398,429 shares. This transaction is classified as an Officer/Director sale of equity securities.