SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
SMITH HAROLD B
(Last) (First) (Middle)
50 S. LA SALLE ST.
(Street)
CHICAGO IL 60603
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
NORTHERN TRUST CORP [ NTRS ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
07/24/2007
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 07/23/2007 W V 727,928 D $0 0 I By Trust(1)
Common Stock 07/23/2007 W V 181,982 A $0 188,351(2) I By Trust
Common Stock 07/24/2007 S 500 D $63.41 187,851 I By Trust
Common Stock 07/24/2007 S 1,070 D $63.42 186,781 I By Trust
Common Stock 07/24/2007 S 100 D $63.43 186,681 I By Trust
Common Stock 07/24/2007 S 832 D $63.44 186,849 I By Trust
Common Stock 07/24/2007 S 2,898 D $63.45 182,951 I By Trust
Common Stock 07/24/2007 S 600 D $63.46 182,351 I By Trust
Common Stock 07/24/2007 S 400 D $63.5 181,951 I By Trust
Common Stock 07/24/2007 S 100 D $63.59 181,851 I By Trust
Common Stock 07/24/2007 S 500 D $63.6 181,351 I By Trust
Common Stock 07/24/2007 S 130 D $63.62 181,221 I By Trust
Common Stock 07/24/2007 S 1,918 D $63.63 179,303 I By Trust
Common Stock 07/24/2007 S 252 D $63.64 179,051 I By Trust
Common Stock 07/24/2007 S 100 D $63.65 178,951 I By Trust
Common Stock 07/24/2007 S 100 D $63.7 178,851 I By Trust
Common Stock 07/24/2007 S 100 D $63.71 178,751 I By Trust
Common Stock 07/24/2007 S 500 D $63.72 178,251 I By Trust
Common Stock 07/24/2007 S 700 D $63.73 177,551 I By Trust
Common Stock 07/24/2007 S 300 D $63.75 177,251 I By Trust
Common Stock 07/24/2007 S 300 D $63.76 176,951 I By Trust
Common Stock 07/24/2007 S 533 D $63.81 176,418 I By Trust
Common Stock 07/24/2007 S 483 D $63.82 175,935 I By Trust
Common Stock 07/24/2007 S 284 D $64.65 175,651 I By Trust
Common Stock 07/24/2007 S 1,100 D $64.75 174,551 I By Trust
Common Stock 07/24/2007 S 300 D $64.76 174,251 I By Trust
Common Stock 07/24/2007 S 100 D $64.77 174,151 I By Trust
Common Stock 07/24/2007 S 100 D $64.82 174,051 I By Trust
Common Stock 07/24/2007 S 100 D $64.83 173,951 I By Trust
Common Stock 07/24/2007 S 200 D $64.84 173,751 I By Trust(3)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Explanation of Responses:
1. Shares held in a trust of which the reporting person is a co-trustee and has a direct beneficial interest. Shares were distributed to the beneficiaries, one of whom is the reporting person, upon the dissolution of the trust according to the terms of the trust document.
2. Shares held in a revocable trust created by the reporting person. Total includes the transfer of shares to the reporting person's revocable trust upon the dissolution of a trust of which the reporting person was a co-trustee and had a direct beneficial interest. See footnote 1.
3. This Form 4 is being filed as Part 1 and is continued on a second Form 4 as Part 2 (due to the thirty row maximum allowed on Table I).
Remarks:
Paul A. Bernacki Attorney-in-Fact for Harold B. Smith 07/26/2007
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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