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 * MACQUARIE GROUP LTD   2. Issuer Name and Ticker or Trading Symbol Macquarie Infrastructure Corp [MIC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) LEVEL 6, 50 MARTIN PLACE, SYDNEY, NEW SOUTH WALES 2000 3. Date of Earliest Transaction (Month/Day/Year) 08/31/2018 (Street) AUSTRALIA, C3  4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) ___ Form filed by One Reporting Person _X_ 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, par value $0.001 per share 08/31/2018   P   39,690 (1) A $ 46.72 (2) 11,745,639 I (3) See footnote (3) Common Stock, par value $0.001 per share 09/04/2018   P   56,732 (1) A $ 46.71 (2) 11,802,371 I (3) See footnote (3)

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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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
MACQUARIE GROUP LTD LEVEL 6, 50 MARTIN PLACE SYDNEY, NEW SOUTH WALES 2000 AUSTRALIA, C3		X
Macquarie Infrastructure Management (USA) INC 125 W. 55TH STREET NEW YORK, NY 10019	X	X

Signatures

MGL - /s/ Charles Glorioso, Authorized Signatory, /s/ Paul Peduto, Authorized Signatory, MIMUSA - /s/ Simone Kovacic, Authorized Signatory, /s/ Diana Delgado, Authorized Signatory		09/04/2018
**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)	These purchases were effected by Macquarie Infrastructure Management (USA) Inc. ("MIMUSA"), a subsidiary of Macquarie Group Ltd. ("MGL"), pursuant to a Rule 10b5-1 trading plan adopted by MIMUSA on May 9, 2018.
(2)	The prices reported in Column 4 are a weighted average price per day. These shares were purchased in multiple transactions at prices ranging from $46.67 to $46.75, inclusive, on August 31, 2018 and from $46.55 to $46.90, inclusive, on September 4, 2018. The reporting person undertakes to provide to Macquarie Infrastructure Corporation, any security holder of Macquarie Infrastructure Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote (2) to this Form 4.
(3)	Includes 54,400 shares held in various investment funds for which Macquarie Investment Management Global Limited, a subsidiary of MGL, acts as investment advisor. MIMUSA holds the balance of the shares. Each reporting person disclaims beneficial ownership of all such securities except to the extent of its pecuniary interest therein.

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