X0203 3 2009-06-16 0 0000927653 MCKESSON CORP MCK 0001466438 Blake Patrick ONE POST STREET SAN FRANCISCO CA 94601 0 1 0 0 EVP Common Stock 2054.335 D Common Stock 1028.428 I By Profit-Sharing Investment Plan Employee Stock Option (Right-to-buy) 32.67 2011-01-31 Common Stock 9783 D Employee Stock Option (Right-to-buy) 38.65 2011-07-25 Common Stock 10438 D Employee Stock Option (Right-to-buy) 38.20 2012-01-29 Common Stock 10970 D Employee Stock Option (Right-to-buy) 32.92 2012-07-30 Common Stock 10418 D Employee Stock Option (Right-to-buy) 34.36 2013-07-30 Common Stock 31963 D Employee Stock Option (Right-to-buy) 34.94 2011-05-25 Common Stock 35000 D Employee Stock Option (Right-to-buy) 45.02 2012-07-27 Common Stock 24000 D Restricted Stock Units (RSUs) 0 Common Stock 22760 D Employee Stock Option (Right-to-buy) 47.97 2013-05-23 Common Stock 20000 D Employee Stock Option (Right-to-buy) 62.21 2014-05-22 Common Stock 15000 D Restricted Stock Units (RSUs) 0 Common Stock 3819 D Employee Stock Option (Right-to-buy) 57.89 2015-05-20 Common Stock 15000 D Restricted Stock Units (RSUs) 0 Common Stock 2888 D Employee Stock Options (Right-to-buy) 40.46 2016-05-26 Common Stock 25000 D Restricted Stock Units (RSUs) 0 Common Stock 6038 D Employee Stock Option (Right-to-buy) 41.51 2016-06-15 Common Stock 75000 D Includes 163.335 shares purchased under the Issuer's Employee Stock Purchase Plan. This option granted 01/31/2001 vested 25% on 1st anniversary, 25% on 2nd anniversary and 50% on 1/27/2004. This option granted 07/26/2001 vested 25% on 1st anniversary, 25% on 2nd anniversary and 50% on 1/27/2004. This option granted 01/30/2002 vested 25% on 1st anniversary and 75% on 1/27/2004. This option granted 07/31/2002 vested 25% on 1st anniversary and 75% on 1/27/2004. This option granted 07/30/2003 vested 100% on 1/27/2004. This option granted 05/25/2004 vested 100% on 3/31/2005. This option granted 07/27/2005 vested 100% on 3/31/2006. These RSUs granted 01/24/2006 vest 50% 1/24/2009 and 50% 1/24/2012. This option granted 05/23/2006 vests 25% over four years commencing on the 1st anniversary of the grant date. This option granted 05/22/2007 vests 25% over four years commencing on the 1st anniversary of the grant date. This option granted 05/20/2008 vests 25% over four years commencing on the 1st anniversary of the grant date. This option granted 06/15/2009 vests 25% over four years commencing on the 1st anniversary of the grant date. These RSUs vest 100% on 5/22/2011. This option granted 05/26/2009 vests 25% over four years commencing on the 1st anniversary of the grant date. These RSUs vest 100% on 05/20/2012. These RSUs vest 100% on 05/22/2010. Donna Spinola, Attorney-in-fact 2009-06-19