X0306 4 2013-04-30 0 0001048477 BIOMARIN PHARMACEUTICAL INC BMRN 0001274826 BAFFI ROBERT C/O BIOMARIN PHARMACEUTICAL INC. 105 DIGITAL DRIVE NOVATO CA 94949 0 1 0 0 EVP, Technical Operations Common Stock 2013-04-30 2013-04-30 5 A 0 805 23.205 A 53155 D Common Stock 2013-05-03 2013-05-03 4 M 0 20000 14.39 A 73155 D Common Stock 2013-05-03 2013-05-03 4 S 0 20000 67.000 D 53155 D Common Stock 8238 I Shares held by Baffi Family Trust Stock Option (right to buy) Common Stock 14.39 2013-05-03 2013-05-03 4 M 0 20000 0 D 2009-11-12 2019-05-11 Common Stock 20000 3051 D The reporting peson is voluntarily reporting the aquisition of shares of theissuer's common stock pursuant to the issuer's Employee Stock Purchase Plan ("ESPP"), for the ESPP Purchase period of November 1, 2012 to April 30, 2013. Transaction made pursuant to a Rule 10b5-1 plan executed on March 4, 2013. All shares sold at the same price. Options vest 6/48ths on November 12, 2009 and 1/48th on the 12th of each month thereafter. Reflects the number of stock options that remain outstanding from this specific stock option grant following the reported transaction. /s/ Laura Randall Woodhead, Attorney-in-Fact 2013-05-07