UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Form 13F
Form 13F COVER PAGE
Report for the Calendar Year or Quarter Ended: December 31, 2011
Check here if Amendment; Amendment Number: [ ]
This Amendment (Check only one.): [ ] is a restatement.
[ ] adds new holdings entries.
Institutional Investment Manager Filing this Report:
Name: Arthur J. Gallagher & Co.
Address: Two Pierce Place
Itasca, Illinois 60143
Form 13F File Number: 28-14530
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The institutional investment manager filing this report and the person
by whom it is signed hereby represent that the person signing the report is
authorized to submit it, that all information contained herein is true, correct
and complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.
Person Signing this Report on Behalf of Reporting Manager:
Name: April J. Hanes-Dowd
Title: Assistant Secretary
Phone: (630) 773-3800
Signature, Place, and Date of Signing:
/s/ April J. Hanes-Dowd Itasca, Illinois February 10, 2012
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[Signature] [City, State] [Date]
Report Type (Check only one.):
[X] 13F HOLDINGS REPORT. (Check here if all holdings of this reporting
manager are reported in this report).
[ ] 13F NOTICE. (Check here if no holdings reported are in this report, and
all holdings are reported by other reporting manager(s)).
[ ] 13F COMBINATION REPORT. (Check here if a portion of the holdings for
this reporting manager are reported in this report and a portion are
reported by other reporting manager(s)).
List of Other Managers Reporting for this Manager:
None.
Form 13F SUMMARY PAGE
Report Summary:
Number of Other Included Managers: 2
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Form 13F Information Table Entry Total: 9
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Form 13F Information Table Value Total: $ 419,943
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(thousands)
List of Other Included Managers:
Provide a numbered list of the name(s) and Form 13F file number(s) of
all institutional investment managers with respect to which this report is
filed, other than the manager filing this report.
No. Form 13F File Number Name
1 28-14533_____________________ Gallagher Fiduciary Advisors, LLC
2 28-14532_____________________ Gallagher Benefit Services, Inc.
-2-
December 31, 2011
FORM 13F INFORMATION TABLE
Voting Authority
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Title
of Value Shares/ Sh/ Put/ Investment Other
Name of Issuer Class CUSIP (x$1000) Prn Amt Prn Call Discretion Managers Sole Shared None
-------------- ----- ----- -------- ------- --- ---- ----------- -------- ---- ------ ----
Clear Channel Outdoor
Holdings CL A 18451C109 1,978 157,606 SH DEFINED 1, 2 157,606
General Motors Company COM 37045V100 16,915 834,491 SH DEFINED 1, 2 673917 160574
General Motors Company W EXP 37045V118 21,140 1,802,254 SH DEFINED 1, 2 1455623 346631
7/10/2016
General Motors Company W EXP 37045V126 28,022 3,583,354 SH DEFINED 1, 2 2894113 689241
7/10/2019
Franklin Resources Inc. COM 354613101 86,051 895,805 SH DEFINED 1, 2 895805
Kaiser Aluminum
Corporation COM 483007704 85,893 2,202,495 SH DEFINED 1, 2 2202495
Kaman Corp. COM 483548103 16,317 597,237 SH DEFINED 1, 2 597237
PPG Industries Inc. COM 693506107 150,641 1,804,305 SH DEFINED 1, 2 1804305
Solutia Inc. COM 834376501 12,986 751,492 SH DEFINED 1, 2 751492
REPORT SUMMARY 9 DATA RECORDS $419,943 ALL OTHER MANAGERS ON WHOSE BEHALF REPORT IS FILED - 2