STATE STREET CORP — Director's Dealing 2007

Feb 20, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: STATE STREET CORP (STT)
CIK: 0000093751
Period of Report: 2007-02-15

Reporting Person: CHOW JOSEPH W (Executive Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-02-15	Common Stock	A	4878	$70.59	Acquired	17925	Direct
2007-02-15	Common Stock	F	780	$70.59	Disposed	17145	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2007-02-15	Stock Appreciation Right	$70.59	A	38977	Acquired	2007-02-15	Common Stock (38977)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1000	Indirect

Footnotes

F1: Deferred stock award granted pursuant to State Street Corporation 2006 Equity Incentive Plan.

F2: These shares were withheld to satisfy tax withholding obligations in connection with the vesting of deferred stock.

F3: Shares held in an IRA by a member of the reporting person's family, with respect to which the reporting person disclaims beneficial ownership of any such shares.

F4: Stock Appreciation Right granted pursuant to State Street Corporation 2006 Equity Incentive Plan.

F5: Stock Appreciation Right becomes exercisable in four equal annual increments commencing February 15, 2008.