Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF 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 *
  Buckiso Scott D
 2. Date of Event Requiring Statement (Month/Day/Year)
05/31/2015		 3. Issuer Name and Ticker or Trading Symbol
UNITED STATES STEEL CORP [X]
(Last)
(First)
(Middle)
600 GRANT STREET, 61ST FLOOR		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
VP Euro Solutions & Pres USSK
 5. If Amendment, Date Original Filed(Month/Day/Year)
06/04/2015
(Street)

PITTSBURGH, PA 15219		 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 Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Phantom Stock Units (1)   (2)   (2) Common Stock 140.605 $ (3) D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Buckiso Scott D
600 GRANT STREET, 61ST FLOOR
PITTSBURGH, PA 15219		       VP Euro Solutions & Pres USSK  

Signatures

/s/ Megan Roby, Attorney-in-Fact for Scott Buckiso 12/15/2017
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(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 original Form 3 filed on June 4, 2015 is being amended by this Form 3/A solely to include Phantom Stock Units held by the reporting person that were unintentionally omitted. The reporting person currently beneficially owns 1,484.136 Phantom Stock Units.
(2) The reported phantom stock units were acquired under the United States Steel Corporation Supplemental Thrift Program and are to be settled in cash upon the reporting person's retirement or other termination of service.
(3) Each phantom stock unit is the economic equivalent of one share of United States Steel Corporation common stock.

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