UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Form 13F
Form 13F COVER PAGE
Report for the Calendar Year or Quarter Ended: September 30, 2012
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 November 13, 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: 7
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Form 13F Information Table Value Total: $ 388,806
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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-
September 30, 2012
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 1,486 242,799 SH DEFINED 1, 2 242,799
General Motors
Company W EXP 7/10/2016 37045V118 10,952 794,783 SH DEFINED 1, 2 N/A N/A N/A
General Motors
Company W EXP 7/10/2019 37045V126 22,443 2,717,083 SH DEFINED 1, 2 N/A N/A N/A
Franklin Resources
Inc. COM 354613101 107,093 856,267 SH DEFINED 1, 2 856,267
Kaiser Aluminum
Corporation COM 483007704 37,989 650,606 SH DEFINED 1, 2 650,606
PPG Industries Inc. COM 693506107 207,206 1,804,305 SH DEFINED 1, 2 1,804,305
USEC Inc. COM 90333E108 1,637 2,099,078 SH DEFINED 1, 2 2,099,078
REPORT SUMMARY 7 DATA RECORDS $388,806 ALL OTHER MANAGERS ON WHOSE BEHALF REPORT IS FILED - 2