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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1. Name and Address of Reporting Person * HOWELL DOUGLAS K   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) VP & Chief Financial Officer (Last) (First) (Middle) ARTHUR J. GALLAGHER & CO., TWO PIERCE PLACE 3. Date of Earliest Transaction (Month/Day/Year) 03/10/2017 (Street) ITASCA, IL 60143 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 (restricted) 03/10/2017   M   8,050 D $ 0 26,406 D   Common Stock 03/10/2017   M   8,050 A $ 0 39,636 D   Common Stock 03/10/2017   F   2,315 D $ 56.66 37,321 D   Common Stock (restricted) 03/13/2017   M   5,500 (1) D $ 0 20,906 D   Common Stock               2,300 I By Spouse (2)

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

Notional Stock Units

$ 0 (3)

03/13/2017

M

5,500 (1)

(4)

(4)

Common Stock

5,500

$ 0

27,673

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
HOWELL DOUGLAS K ARTHUR J. GALLAGHER & CO. TWO PIERCE PLACE ITASCA, IL 60143			VP & Chief Financial Officer

Signatures

/s/ April Hanes-Dowd, by power of attorney		03/14/2017
**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 reporting person deferred receipt of restricted stock units into the Company's Supplemental Savings and Thrift Plan, resulting in the acquisition of a corresponding number of notional stock units.
(2)	The reporting person has no voting or invesment power over these shares and disclaims beneficial ownership.
(3)	Each notional stock unit represents a right to receive one share of Gallagher common stock.
(4)	The notional stock units become payable in July 2018.

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