Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
NORDAL GREGORY E
  2. Issuer Name and Ticker or Trading Symbol
DUN & BRADSTREET CORP/NW [DNB]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Leader - International
(Last)
(First)
(Middle)
103 JFK PARKWAY
3. Date of Earliest Transaction (Month/Day/Year)
05/13/2005
(Street)

SHORT HILLS, NJ 07078
4. If Amendment, Date 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
(City)
(State)
(Zip)
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 05/13/2005   M   982 A $ 12.9088 8,652 D  
Common Stock 05/13/2005   M   1,088 A $ 14.0731 9,740 D  
Common Stock 05/13/2005   M   4,105 A $ 16.892 13,845 D  
Common Stock 05/13/2005   M   3,950 A $ 14.4083 17,795 D  
Common Stock 05/13/2005   M   2,220 A $ 14.0381 20,015 D  
Common Stock 05/13/2005   M   10,866 A $ 23.7188 30,881 D  
Common Stock 05/13/2005   M   2,933 A $ 36.16 33,814 D  
Common Stock 05/13/2005   M   3,665 A $ 53.3 37,479 D  
Common Stock 05/13/2005   S   600 D $ 60.21 36,879 D  
Common Stock 05/13/2005   S   400 D $ 60.22 36,479 D  
Common Stcok 05/13/2005   S   1,600 D $ 60.23 34,879 D  
Common Stock 05/13/2005   S   500 D $ 60.24 34,379 D  
Common Stock 05/13/2005   S   1,300 D $ 60.26 33,079 D  
Common Stock 05/13/2005   S   100 D $ 60.27 32,979 D  
Common Stock 05/13/2005   S   200 D $ 60.29 32,779 D  
Common Stock 05/13/2005   S   100 D $ 60.33 32,679 D  
Common Stock 05/13/2005   S   200 D $ 60.34 32,479 D  
Common Stock 05/13/2005   S   500 D $ 60.36 31,979 D  
Common Stcok 05/13/2005   S   1,700 D $ 60.37 30,279 D  
Common Stock 05/13/2005   S   400 D $ 60.38 29,879 D  
Common Stock 05/13/2005   S   1,600 D $ 60.39 28,279 D  
Common Stock 05/13/2005   S   800 D $ 60.4 27,479 D  
Common Stock 05/13/2005   S   10,000 D $ 60.41 17,479 D  
Common Stock 05/13/2005   S   1,500 D $ 60.42 15,979 D  
Common Stock 05/13/2005   S   2,300 D $ 60.43 13,679 D  
Common Stock 05/13/2005   S   1,800 D $ 60.44 11,879 D  
Common Stock 05/13/2005   S   200 D $ 60.45 11,679 D  
Common Stock 05/13/2005   S   200 D $ 60.46 11,479 D  
Common Stock 05/13/2005   S   300 D $ 60.47 11,179 D  
Common Stock 05/13/2005   S   100 D $ 60.48 11,079 D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 Underlying Securities
(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 of Derivative Security: 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
Non-Qualified Stock Option - right to buy $ 12.9088 05/13/2005   M     982 07/16/2001 07/15/2007 Common Stock 982 $ 0 0 D  
Non-Qualified Stock Option - right to buy $ 14.0731 05/13/2005   M     1,088 12/21/2001 12/22/2007 Common Stock 1,088 $ 0 0 D  
Non-Qualified Stock Option - right to buy $ 16.892 05/13/2005   M     4,105 07/01/2003 07/01/2008 Common Stock 4,105 $ 0 0 D  
Non-Qualified Stock Option - right to buy $ 14.4083 05/13/2005   M     3,950 12/21/2002(1) 12/21/2009 Common Stock 3,950 $ 0 0 D  
Non-Qualified Stock Option - right to buy $ 14.0381 05/13/2005   M     2,220 01/19/2003(1) 01/19/2010 Common Stock 2,220 $ 0 0 D  
Non-Qualified Stock Option - right to buy $ 23.7188 05/13/2005   M     10,866 12/04/2003(2) 12/04/2010 Common Stock 10,866 $ 0 5,434 D  
Non-Qualified Stock Option - right to buy $ 36.16 05/13/2005   M     2,933 12/19/2004(2) 12/19/2011 Common Stock 2,933 $ 0 5,867 D  
Non-Qualified Stock Option - right to buy $ 53.3 05/13/2005   M     3,665 02/09/2005(3) 02/09/2014 Common Stock 3,665 $ 0 10,995 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
NORDAL GREGORY E
103 JFK PARKWAY
SHORT HILLS, NJ 07078
      Leader - International  

Signatures

 /s/ Christine M. Cappuccia for Gregory E. Nordal   05/17/2005
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) The option vested in three equal annual installments beginning on the date indicated.
(2) One-third of the option vests each year beginning on the date indicated.
(3) One-fourth of the option vests each year beginning on the date indicated.
 
Remarks:
This is Form 1 of 2, detailing the Reporting Person's various May 13, 2005 stock transactions.

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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