X0303 4 2010-03-16 0000885725 BOSTON SCIENTIFIC CORP BSX 0000901430 ABELE JOHN E ONE BOSTON SCIENTIFIC PLACE NATICK MA 01760-1537 1 Common Stock 2010-03-16 4 J 0 100000 0 D 13643721 D Common Stock 6666949 I By LLC Common Stock 400000 I By Spouse Common Stock 351098 I By Trust Forward Sale Contract (obligation to sell) 2010-03-16 4 J 0 100000 0 D 2010-03-16 2010-03-16 Common Stock 100000 0 D On March 16, 2010, the reporting person settled a prepaid variable forward sale contract originally entered into on March 16, 2009 with an unaffiliated commercial bank. At the initiation of the contract, the bank paid $568,335.21 to the reporting person. The forward sale contract obligated the reporting person to deliver to the bank at maturity up to 100,000 shares of the Issuer's common stock depending on market prices at maturity. If the market price per share at maturity was equal to or less than the floor price of $7.73 per share, the reporting person would deliver 100,000 shares to the bank. If the market price per share at maturity was greater than the floor price, the reporting person would deliver a fewer number of shares. The market price per share on March 16, 2010 was $7.09 Accordingly, the reporting person transferred to the bank 100,000 shares of the Issuer's common stock. Common stock held by a limited liability company of which reporting person holds 100% membership interest. Common stock held by the reporting person's wife. The reporting person disclaims beneficial ownership of these shares. Common stock held by trust for the benefit of the reporting person's child of which the reporting person is a trustee. The reporting person disclaims beneficial ownership of these shares. /s/ Lawrence J. Knopf, Attorney-in-fact 2010-03-18