STATE STREET CORP — Director's Dealing 2008

Feb 21, 2008

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: STATE STREET CORP (STT)
CIK: 0000093751
Period of Report: 2008-02-15

Reporting Person: Antonellis Joseph C (Vice Chairman)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2008-02-15	Common Stock	F	3223	$83.92	Disposed	39613	Direct
2008-02-20	Common Stock	M	24750	$51.975	Acquired	64363	Direct
2008-02-20	Common Stock	M	19210	$40.22	Acquired	83573	Direct
2008-02-20	Common Stock	S	100	$82.13	Disposed	83473	Direct
2008-02-20	Common Stock	S	400	$82.15	Disposed	83073	Direct
2008-02-20	Common Stock	S	200	$82.23	Disposed	82873	Direct
2008-02-20	Common Stock	S	300	$82.29	Disposed	82573	Direct
2008-02-20	Common Stock	S	400	$82.31	Disposed	82173	Direct
2008-02-20	Common Stock	S	300	$82.32	Disposed	81873	Direct
2008-02-20	Common Stock	S	100	$82.39	Disposed	81773	Direct
2008-02-20	Common Stock	S	500	$82.40	Disposed	81273	Direct
2008-02-20	Common Stock	S	300	$82.41	Disposed	80973	Direct
2008-02-20	Common Stock	S	100	$82.42	Disposed	80873	Direct
2008-02-20	Common Stock	S	46	$82.43	Disposed	80827	Direct
2008-02-20	Common Stock	S	200	$82.44	Disposed	80627	Direct
2008-02-20	Common Stock	S	100	$82.45	Disposed	80527	Direct
2008-02-20	Common Stock	S	100	$82.47	Disposed	80427	Direct
2008-02-20	Common Stock	S	400	$82.49	Disposed	80027	Direct
2008-02-20	Common Stock	S	200	$82.50	Disposed	79827	Direct
2008-02-20	Common Stock	S	500	$82.51	Disposed	79327	Direct
2008-02-20	Common Stock	S	54	$82.52	Disposed	79273	Direct
2008-02-20	Common Stock	S	400	$82.53	Disposed	78873	Direct
2008-02-20	Common Stock	S	200	$82.54	Disposed	78673	Direct
2008-02-20	Common Stock	S	200	$82.55	Disposed	78473	Direct
2008-02-20	Common Stock	S	235	$82.56	Disposed	78238	Direct
2008-02-20	Common Stock	S	200	$82.58	Disposed	78038	Direct
2008-02-20	Common Stock	S	100	$82.61	Disposed	77938	Direct
2008-02-20	Common Stock	S	207	$82.62	Disposed	77731	Direct
2008-02-20	Common Stock	S	158	$82.63	Disposed	77573	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2008-02-20	Employee Stock Option (right to buy)	$51.975	M	24750	Disposed	2011-12-20	Common Stock (24750)	Direct
2008-02-20	Employee Stock Option	$40.22	M	19210	Disposed	2012-12-18	Common Stock (19210)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	6629	Indirect

Footnotes

F1: The reporting person indirectly beneficially owns 6,629 shares of State Street common stock under State Street's 401(k) plan, based on a plan statement dated as of January 31, 2008. The plan accounts for interest in units consisting of shares of State Street common stock and a small amount of cash. As a result, the number of underlying shares may fluctuate from time to time.

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

F3: The balance reflects the amount of shares beneficially owned, including shares received due to dividend reinvestment, as of the date of this report.

F4: The option vested in three equal annual installments commencing December 20, 2002.

F5: The option vested in three equal annual installments commencing December 19, 2004.