X0609 4 2026-08-03 0000885725 BOSTON SCIENTIFIC CORP BSX 0001533022 Mahoney Michael F false 300 BOSTON SCIENTIFIC WAY MARLBOROUGH MA 01752-1234 1 1 Chairman, President & CEO 0 Common Stock 2026-08-03 4 P 0 186240.0000 48.3323 A 1590024.0000 D Common Stock 2026-08-03 4 I 0 22119.0000 48.4300 A 22119.0000 I By 401(k) Represents the weighted average purchase price. These shares were purchased in multiple transactions at prices ranging from $47.87 to $48.47, inclusive. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer or a security holder of the issuer, full information regarding the number of shares purchased at each separate price. Acquistion made pursuant to an election by the reporting person to rebalance their holdings under the Company's 401(k) Retirement Savings Plan, which resulted in a discretionary transaction in shares of the Company's common stock. /s/ Susan Thompson, Attorney-in-Fact 2026-08-05