Ownership Submission
FORM 5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Form 3 Holdings Reported
Form 4 Transactions Reported
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

ANNUAL 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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1. Name and Address of Reporting Person *
MCGURN DAVID E JR
 2. Issuer Name and Ticker or Trading Symbol
GALLAGHER ARTHUR J & CO [AJG] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Vice President
(Last)
(First)
(Middle)

ARTHUR J. GALLAGHER & CO., TWO PIERCE PLACE		 3. Statement for Issuer's Fiscal Year Ended (Month/Day/Year)
12/31/2005
(Street)


ITASCA, IL 60143		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Reporting
(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 at end of Issuer's Fiscal Year
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Amount (A) or (D) Price
Common Stock 12/08/2005   G 2,172 D $ (1) 134,761 D  
Common Stock 12/08/2005   G 724 A $ (1) 1,441 I by Son
Common Stock 12/08/2005   G 1,448 A $ (1) 2,882 I by Spouse (2)
Common Stock             48,218 I by Trust
Common Stock (restricted)             4,763 D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. SEC 2270 (9-02)

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 at End of Issuer's Fiscal Year
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
(A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Non-Qualified Stock Option (right to buy) $ 7.97             (3) 07/17/2006 Common Stock
40,000
  40,000
D
 
Non-Qualified Stock Option (right to buy) $ 9.25             (3) 08/30/2008 Common Stock
40,000
  40,000
D
 
Non-Qualified Stock Option (right to buy) $ 18.5             (3) 06/20/2010 Common Stock
30,000
  30,000
D
 
Non-Qualified Stock Option (right to buy) $ 22.7             (3) 07/21/2012 Common Stock
20,000
  20,000
D
 
Non-Qualified Stock Option (right to buy) $ 24.9           01/01/2004(3) 07/16/2013 Common Stock
35,000
  35,000
D
 
Non-Qualified Stock Option (right to buy) $ 26.5             (3) 07/19/2011 Common Stock
20,000
  20,000
D
 
Non-Qualified Stock Option (right to buy) $ 27.25             (3) 07/20/2015 Common Stock
30,000
  30,000
D
 
Non-Qualified Stock Option (right to buy) $ 29.42             (3) 07/21/2014 Common Stock
35,000
  35,000
D
 

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
MCGURN DAVID E JR
ARTHUR J. GALLAGHER & CO.
TWO PIERCE PLACE
ITASCA, IL 60143		       Vice President  

Signatures

By: John C. Rosengren For: David E. McGurn, Jr. 02/06/2006
**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) This transaction involves a gift.
(2) Held by spouse as custodian for benefit of children under the Uniform Gift to Minors Act.
(3) The stock option becomes exercisable 10% each year, commencing January 1 after the date of grant.

Note: File three copies of this Form, one of which must be manually signed. If space provided is insufficient, see Instruction 6 for procedure.

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