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 * Ledford Laurie   2. Issuer Name and Ticker or Trading Symbol MARSH & MCLENNAN COMPANIES, INC. [MMC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) SVP & Chief HR Officer (Last) (First) (Middle) 1166 AVENUE OF THE AMERICAS 3. Date of Earliest Transaction (Month/Day/Year) 05/16/2017 (Street) NEW YORK, NY 10036 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 05/16/2017   M   7,500 A $ 0 44,419.5441 (1) D   Common Stock 05/16/2017   M   22,046 A $ 0 66,465.5441 D   Common Stock 05/16/2017   M   34,938 A $ 0 101,403.5441 D   Common Stock 05/16/2017   M   64,517 A $ 0 165,920.5441 D   Common Stock 05/16/2017   M   12,418 A $ 0 178,338.5441 D   Common Stock 05/16/2017   M   11,245 A $ 0 189,583.5441 D   Common Stock 05/16/2017   S   184,305 D $ 74.027 5,278.5441 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

Stock Options (Right to Buy)

$ 57.325

05/16/2017

M

7,500

(2)

02/21/2026

Common Stock

7,500

$ 0

35,753

D

Stock Options (Right to Buy)

$ 56.84

05/16/2017

M

22,046

(3)

02/22/2025

Common Stock

22,046

$ 0

22,046

D

Stock Options (Right to Buy)

$ 48

05/16/2017

M

34,938

(4)

02/23/2024

Common Stock

34,938

$ 0

11,646

D

Stock Options (Right to Buy)

$ 36.495

05/16/2017

M

64,517

(5)

02/24/2023

Common Stock

64,517

$ 0

0

D

Stock Options (Right to Buy)

$ 31.885

05/16/2017

M

12,418

(6)

02/23/2022

Common Stock

12,418

$ 0

0

D

Stock Options (Right to Buy)

$ 30.595

05/16/2017

M

11,245

(7)

02/20/2021

Common Stock

11,245

$ 0

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Ledford Laurie 1166 AVENUE OF THE AMERICAS NEW YORK, NY 10036			SVP & Chief HR Officer

Signatures

/s/ Tiffany D. Wooley, Attorney-in-Fact		05/17/2017
**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's original Form 3 filed on April 12, 2012, inadvertently misstated the number of shares of MMC common stock held by the reporting person. This filing amends that error.
(2)	These options were granted on February 22, 2016 and vest in four equal annual installments. The first installment vested and became exercisable on February 22, 2017. The remaining installments vest on February 22nd of 2018, 2019 and 2020.
(3)	These options were granted on February 23, 2015 and vest in four equal annual installments. The first two installments vested and became exercisable on February 23rd of 2016 and 2017. The remaining installments vest on February 23rd of 2018 and 2019.
(4)	These options were granted on February 24, 2014 and vest in four equal annual installments. The first three installments vested and became exercisable on February 24th of 2015, 2016 and 2017. The remaining installment vests on February 24, 2018.
(5)	These options were granted on February 25, 2013 and vested in four equal annual installments on February 25th of 2014, 2015, 2016 and 2017.
(6)	These options were granted on February 24, 2012 and vested in four equal annual installments on February 24th of 2013, 2014, 2015 and 2016.
(7)	These options were granted on February 21, 2011 and vested in four equal annual installments on February 21st of 2012, 2013, 2014 and 2015.

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