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 * IRVIN JOHN   2. Issuer Name and Ticker or Trading Symbol ExOne Co [XONE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 127 INDUSTRY BOULEVARD 3. Date of Earliest Transaction (Month/Day/Year) 11/24/2017 (Street) NORTH HUNTINGDON, PA 15642 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, par value $0.01 11/24/2017   S(1)   1,400 D $ 11.64 (2) 82,092 I (3) By 20 20 Holdings, LLC Common Stock, par value $0.01 11/27/2017   S(1)   5,125 D $ 11.9 (2) 76,967 I (3) By 20 20 Holdings, LLC Common Stock, par value $0.01               154,300 D   Common Stock, par value $0.01               3,000 I (4) By wife

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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
IRVIN JOHN 127 INDUSTRY BOULEVARD NORTH HUNTINGDON, PA 15642	X

Signatures

/s/ Loretta L. Benec, attorney-in-fact for John Irvin		11/28/2017
**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 sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by 20 20 Holdings, LLC and Mr. Irvin on November 17, 2017.
(2)	The price reported in Column 4 is a weighted average price. The shares sold on November 24, 2017 were sold in multiple transactions at prices ranging from $11.54 to $11.72, inclusive. The shares sold on November 27, 2017 were sold in multiple transactions at prices ranging from $11.58 to $12.03, inclusive. Mr. Irvin undertakes to provide to The ExOne Company, any security holder of The ExOne Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
(3)	20 20 Holdings, LLC is the owner of these shares. 20 20 Holdings is a limited liability company of which Mr. Irvin is the sole manager and has sole power to vote and dispose of the shares.
(4)	Mr. Irvin's wife is the owner of the 3,000 shares. Mr. Irvin disclaims beneficial ownership of these shares, and this report shall not be deemed to be an admission that Mr. Irvin is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

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