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 *
  Helfrich Jared Adam
 2. Date of Event Requiring Statement (Month/Day/Year)
07/12/2018		 3. Issuer Name and Ticker or Trading Symbol
ExOne Co [XONE]
(Last)
(First)
(Middle)
127 INDUSTRY BOULEVARD		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chief Commercial Officer
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

NORTH HUNTINGDON, PA 15642		 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)
Common Stock 333
D
 

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
Stock Option (right to buy)   (1) 08/14/2022 Common Stock 15,000 $ 7.91 D  
Stock Option (right to buy)   (2) 02/10/2027 Common Stock 8,000 $ 10.1 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Helfrich Jared Adam
127 INDUSTRY BOULEVARD
NORTH HUNTINGDON, PA 15642		       Chief Commercial Officer  

Signatures

s/ Loretta L. Benec, attorney-in-fact for Jared A. Helfrich 07/23/2018
**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 option grant for 15,000 shares vested with respect to 7,500 shares on August 14, 2017 and will vest with respect to the remaining 7,500 shares on August 14, 2018.
(2) The original option grant for 8,000 shares vested with respect to 2,666 shares on February 10, 2017 and with respect to 2,667 shares on February 10, 2018; the remaining 2,667 shares will vest on February 10, 2019.
 
Remarks:
See attached Exhibit 24 (Power of Attorney).

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