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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
927653	Mckesson Corp	MCK	Wholesale-Drugs, Proprietaries & Druggists' Sundries (5122)	943207296

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1197887	H John Hammergren	One Post Street San Francisco CA 94104	Chairman, President & Ceo	Yes	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2010-08-06	168,666	$32.92	168,666	No	4	M	Direct
Common Stock	Acquisiton	2010-08-06	31,334	$38.20	200,000	No	4	M	Direct
Common Stock	Disposition	2010-08-06	200,000	$62.37	0	No	4	S	Direct
Common Stock	Acquisiton	2010-08-09	125,000	$38.20	125,000	No	4	M	Direct
Common Stock	Disposition	2010-08-09	125,000	$62.38	0	No	4	S	Direct
Common Stock	Acquisiton	2010-08-10	175,000	$38.20	175,000	No	4	M	Direct
Common Stock	Disposition	2010-08-10	175,000	$61.69	0	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Stock Option (Right-to-buy)	Disposition	2010-08-06	168,666	$0.00	168,666	$32.92
Common Stock	Employee Stock Option (Right-to-buy)	Disposition	2010-08-06	31,334	$0.00	31,334	$38.20
Common Stock	Employee Stock Option (Right-to-buy)	Disposition	2010-08-09	125,000	$0.00	125,000	$38.20
Common Stock	Employee Stock Option (Right-to-buy)	Disposition	2010-08-10	175,000	$0.00	175,000	$38.20

Remaning Holdings	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0	2012-07-30	No	4	M	Direct
468,666	2012-01-29	No	4	M	Direct
343,366	2012-01-29	No	4	M	Direct
168,666	2012-01-29	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	538,790	Indirect	By Trust
Common Stock	4,002	Indirect	By Profit-Sharing Investment Plan

Footnotes

Option exercise and sale were pursuant to a previously adopted plan dated 5/11/2010, intended to comply with Rule 10b5-1(c).
This option granted 7/31/2002 vested 25% on the 1st grant date anniversary and 75% on 1/27/2004.
This option granted 1/30/2002 vested 25% on the 1st grant date anniversary and 75% on 1/27/2004.
Represents 258,549.925 shares held under the Hammergren Family Trust; 12,900 shares held under the JHH GRAT No.3; 12,900 shares held under the WLH GRAT 3; 72,563 shares held under the JHH GRAT No. 4; 72,563 shares held under the WLH GRAT No. 4; 13,664 shares held under the JHH GRAT No. 5; 13,664 shares held under the WLH GRAT No. 5; 13,664 shares held under the JHH GRAT No. 6; 13,664 shares held under the WLH GRAT No. 6; 13,664 shares held under the JHH GRAT No. 7; 13,664 shares held under the WLH GRAT No. 7; 13,665 shares held under the JHH GRAT No. 8; 13,665 shares held under the WLH GRAT No. 8