MICROSOFT CORP — Director's Dealing 2011

May 18, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MICROSOFT CORP (MSFT)
CIK: 0000789019
Period of Report: 2011-05-17

Reporting Person: Brummel Lisa E (Senior Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-17	Common Stock	S	28358	$24.5721	Disposed	267642	Direct
2011-05-17	Common Stock	M	55555	$21.591	Acquired	323197	Direct
2011-05-17	Common Stock	S	55555	$24.5702	Disposed	268511	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2009-10-23	Employee Stock Option (Right to Buy)	$21.591	M	55555	Disposed	2012-07-31	Common Stock (55555)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	614	Indirect

Footnotes

F1: This transaction was executed in multiple trades at prices ranging from $24.54 to $24.59. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.

F2: This transaction was executed in multiple trades at prices ranging from $24.545 to $24.595. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.

F3: Includes 869 shares acquired on March 31, 2011 under the Microsoft employee stock purchase plan.

F4: Balance as of April 30, 3011