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 * Reale John M   2. Issuer Name and Ticker or Trading Symbol USG CORP [USG] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Senior Vice President (Last) (First) (Middle) C/O USG CORPORATION, 550 WEST ADAMS STREET 3. Date of Earliest Transaction (Month/Day/Year) 02/14/2018 (Street) CHICAGO, IL 60661 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 02/14/2018   M   2,800 (1) A $ 0 18,851 D   Common Stock 02/14/2018   F   969 (2) D $ 33.88 17,882 D   Common Stock               1,765.92 I By 401(K)Plan

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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

Market Share Units

(1)

02/14/2018

M

2,105

(1)

(1)

Common Stock

(1)

$ 0

0

D

Market Share Units

(3)

02/14/2018

A

7,670

(4)

(4)

Common Stock

7,670

$ 0

7,670

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Reale John M C/O USG CORPORATION 550 WEST ADAMS STREET CHICAGO, IL 60661			Senior Vice President

Signatures

/s/ Jonathan Dorfman, Attorney-In-Fact		02/15/2018
**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 Market Share Units were granted on February 11, 2015. The Board of Directors (the "Board") certified performance of these Market Share Units on February 14, 2018 and USG Corporation (the "Company") issued to the reporting person 1.33 shares of the Company's common stock for the Market Share Units originally granted, based on the closing prices of shares of the Company's common stock on the New York Stock Exchange for the first fifteen trading days in January 2018.
(2)	Shares withheld to satisfy tax withholding obligation with respect to Market Share Units that became earned.
(3)	Each Market Share Unit represents the right to receive one share of common stock assuming certain market price targets are achieved. The Market Share Units vesting and the actual number of shares received are contingent on the Company's common stock achieving certain pre-defined market price levels during the performance period and continued employment.
(4)	Generally, the Market Share Units will be earned, if at all, once the Board certifies that pre-determined market price targets of the Company's common stock are attained, provided that the reporting person remains continuously employed by the Company or a subsidiary through December 31, 2020.

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