Statement of Changes in Beneficial Ownership (4)

FORM 4 [X] 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
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^* Hartner John	2. Issuer Name and Ticker or Trading Symbol ExOne Co [ XONE ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chief Executive Officer
(Last) (First) (Middle) 127 INDUSTRY BOULEVARD	3. Date of Earliest Transaction (MM/DD/YYYY) 11/12/2021
(Street) NORTH HUNTINGDON, PA 15642 (City) (State) (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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)
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock, par value $0.01	11/12/2021		D		57663	D	⁽¹⁾	57923	D
Common Stock, par value $0.01	11/12/2021		F⁽²⁾		16918	D	$26.70	41005	D
Common Stock, par value $0.01	11/12/2021		D		27082	D	⁽³⁾	13923	D
Common Stock, par value $0.01	11/12/2021		F⁽²⁾		5354	D	$26.70	8569	D
Common Stock, par value $0.01	11/12/2021		D		8569	D	⁽³⁾	0	D
Common Stock, par value $0.01	11/12/2021		A⁽⁴⁾		8426	A	$0.00	8426	D
Common Stock, par value $0.01	11/12/2021		F⁽⁵⁾		3240	D	$26.70	5186	D
Common Stock, par value $0.01	11/12/2021		D		5186	D	⁽⁴⁾	0	D

*Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)*
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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		7. Title and Amount of Securities Underlying Derivative Security (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)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)			11. Nature of Indirect Beneficial Ownership (Instr. 4)
Stock Option (right to buy)	$9.67	11/12/2021		D			100000	⁽⁶⁾	11/12/2023	Common Stock	100000	⁽⁶⁾	0	D
Stock Option (right to buy)	$7.11	11/12/2021		D			100000	⁽⁶⁾	8/12/2024	Common Stock	100000	⁽⁶⁾	0	D

Explanation of Responses:
(1)	On November 12, 2021, Desktop Metal, Inc., a Delaware corporation ("Desktop Metal"), acquired The ExOne Company, a Delaware corporation ("ExOne") pursuant to that certain Agreement and Plan of Merger, dated August 11, 2021, by and among ExOne, Desktop Metal, Texas Merger Sub I, Inc., a wholly owned subsidiary of Desktop Metal, and Texas Merger Sub II, LLC, a wholly owned subsidiary of Desktop Metal (the "Merger Agreement"). The acquisition is more fully described in ExOne's definitive proxy statement filed with the Securities and Exchange Commission on October 8, 2021. In accordance with the terms of the Merger Agreement, each share of ExOne's common stock (the "ExOne Shares") was exchanged for 2.1416 shares (the "Exchange Ratio") of Desktop Metal Class A common stock ("DM Common Stock") plus $8.50 in cash (together, the "Merger Consideration"). Each transaction reported in this Form 4 is an exempt transaction.
(2)	Withholding and disposition for taxes on restricted stock.
(3)	Each award of restricted shares of ExOne subject to the ExOne Change of Control Severance Plan ("ExOne COC RSAs") vested and were cancelled and the holder of such ExOne COC RSA received the Merger Consideration.
(4)	Each award granted under the 2021 Executive Stock Performance Program was converted into ExOne Shares (the "ESPP Award"), with the shares subject to such ESPP Award becoming vested and such vested shares were cancelled and the holder received the Merger Consideration.
(5)	Withholding and disposition of shares for taxes on ESPP Awards.
(6)	Each outstanding vested option to purchase ExOne Shares was cancelled and the holder thereof became entitled to receive the excess of the Merger Consideration over the aggregate exercise price of such ExOne vested option, so long as such ExOne vested option's exercise price was less than the Merger Consideration, less applicable tax withholdings.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Hartner John 127 INDUSTRY BOULEVARD NORTH HUNTINGDON, PA 15642			Chief Executive Officer