Document:

EX-10.1

 Exhibit 10.1 

SUBSCRIPTION AGREEMENT 

This Subscription Agreement (this “Agreement”) is dated January 10, 2016, among The ExOne Company, a Delaware corporation
(the “Company”), and Rockwell Forest Products, Inc., a Pennsylvania corporation (“Purchaser”), and, solely for purposes of being bound by Section 4.5 of this Agreement, S. Kent Rockwell
(“Rockwell”). 
 WHEREAS, subject to the terms and conditions set forth in this Agreement and pursuant to an effective
registration statement filed pursuant to the Securities Act (as defined below), the Company desires to issue and sell to Purchaser, and Purchaser desires to purchase from the Company, shares of Common Stock (as defined below), as more fully
described in this Agreement. 
 NOW, THEREFORE, IN CONSIDERATION of the mutual covenants contained in this Agreement, and for other good and
valuable consideration the receipt and adequacy of which are hereby acknowledged, the Company and Purchaser, intending to be legally bound, agree as follows: 

ARTICLE I. 
 DEFINITIONS 

1.1 Definitions. In addition to the terms defined elsewhere in this Agreement, the following terms have the meanings set forth in this
Section 1.1: 
 “Affiliate” means any Person that, directly or indirectly through one or more
intermediaries, controls or is controlled by or is under common control with a Person (as such terms are used in and construed under Rule 405 of the Securities Act). With respect to Purchaser, any investment fund or managed account that is managed
on a discretionary basis by the same investment manager as Purchaser will be deemed to be an Affiliate of such Purchaser. 

“Certificate of Incorporation” means the Company’s Amended and Restated Certificate of Incorporation, as
amended from time to time. 
 “Closing” means the closing of the purchase and sale of the Shares on the
Closing Date pursuant to Section 2 of this Agreement. 
 “Closing Date” means the
third Trading Day after the date hereof or such other day mutually agreed upon by the Company and Purchaser. 

“Commission” means the U.S. Securities and Exchange Commission. 

“Common Stock” means the common stock of the Company, par value $0.01 per share. 

“Exchange Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations
promulgated thereunder. 
 “Investment Company Act” means the Investment Company Act of 1940, as amended.

 “Material Adverse Effect” means any material adverse effect on (a) the enforceability of any
Transaction Document, (b) the results of operations, assets, business or financial condition of the Company and its Subsidiaries, taken as a whole, or (c) the Company’s ability to perform in any material respect on a timely basis its
obligations under any Transaction Document to be performed as of the date of determination, other than any such change, effect, event or circumstance, including, without limitation, any change in the stock price or trading volume of the Common
Stock, that resulted exclusively from (i) any change in the United States or foreign economies or securities or financial markets in general that does not have a disproportionate effect on the Company and its Subsidiaries, (ii) any change
that generally affects the industry in which the Company and its Subsidiaries operate that does not have a disproportionate effect on the Company and its Subsidiaries, taken as a whole, (iii) any change arising in connection with natural
disasters, hostilities, acts of war, sabotage or terrorism or military actions or any escalation or material worsening of any such natural disasters, hostilities, acts of war, sabotage or terrorism or military actions existing as of the date

 
hereof, (iv) any action taken by Purchaser, its Affiliates or its or their permitted successors and assigns with respect to the transactions contemplated by this Agreement, (v) the
effect of any changes in applicable laws or accounting rules that does not have a disproportionate effect on the Company and its Subsidiaries, taken as a whole, and (vi) any change resulting from compliance with the terms of this Agreement or
the consummation of the transactions contemplated by this Agreement. 
 “Per Share Purchase Price” means
$9.13 per share of Common Stock. 
 “Person” means an individual or corporation, partnership, trust,
incorporated or unincorporated association, joint venture, limited liability company, joint stock company, government (or an agency or subdivision thereof) or other entity of any kind. 

“Prospectus” means the final prospectus filed for the Registration Statement, including the documents
incorporated by reference in such final prospectus. 
 “Prospectus Supplement” means the supplement to the
Prospectus complying with Rule 424(b) of the Securities Act that is delivered by the Company to Purchaser prior to the execution and delivery of this Agreement, including the documents incorporated by reference therein, and that is filed with
the Commission. 
 “Registration Statement” means the effective registration statement on Form S-3 (Commission File No. 333-203353) filed by the Company with the Commission pursuant to the Securities Act for the registration of the Shares, as such Registration Statement may be amended and
supplemented from time to time (including pursuant to Rule 462(b) of the Securities Act), including all documents filed as part thereof or incorporated by reference therein, and including all information deemed to be a part thereof at the time
of effectiveness pursuant to Rule 430B of the Securities Act. 
 “SEC Reports” shall have the meaning
ascribed to such term in Section 3.1(h) of this Agreement. 
 “Securities Act” means the
Securities Act of 1933, as amended, and the rules and regulations promulgated thereunder. 
 “Shares” shall
have the meaning ascribed to such term in Section 2.1 of this Agreement. 
 “Short Sales” means
all “short sales” as defined in Rule 200 of Regulation SHO of the Exchange Act, but shall be deemed to not include the location and/or reservation of borrowable shares of Common Stock. 

“Subscription Amount” means the aggregate amount to be paid for the Shares purchased hereunder as specified
on Purchaser’s signature page to this Agreement and next to the heading “Subscription Amount,” in United States dollars and in immediately available funds. 

“Subsidiary” means any corporation, partnership or other entity of which the Company directly or indirectly
owns more than fifty percent (50%) of its outstanding equity securities. 
 “Trading Day” means a day
on which the Common Stock is traded on a Trading Market. 
 “Trading Market” means the following markets or
exchanges on which (and if) the Common Stock is listed or quoted for trading on the date in question: the NYSE MKT; The NASDAQ Capital Market; The NASDAQ Global Market; The NASDAQ Global Select Market; or the New York Stock Exchange. 

“Transaction Documents” means this Agreement and any other documents or agreements executed and delivered to
Purchaser in connection with the transactions contemplated hereunder. 
 ARTICLE II. 

PURCHASE AND SALE 
 2.1
Subscription. Purchaser irrevocably subscribes for and agrees to purchase the number of Shares at the Per Share Purchase Price and for the aggregate Subscription Amount set forth on Purchaser’s signature page to this Agreement
(collectively, the “Shares”). 
 2.2. Sale of Shares. On the Closing Date, the Company agrees to issue and sell
the Shares to Purchaser.

  
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 2.3 Deliveries; Closing Conditions. 

(a) On the Closing Date, (i) the Company shall deliver instructions to the Company’s transfer agent to issue and
deliver the Shares to Purchaser via the Depository Trust Company Deposit and Withdrawal at Custodian (“DWAC”) system, registered in the name of Purchaser, against delivery of the Subscription Amount payable by Purchaser and
(ii) Purchaser shall direct its broker-dealer (which shall be a DTC participant) in whose custody Purchaser has an account to set up a DWAC instructing the transfer agent to credit such account with the Shares being purchased by Purchaser (the
“Closing”). 
 (b) On the Closing Date, Purchaser will pay to the Company the Subscription Amount by wire
transfer of immediately available funds to an account designated by the Company. 
 (c) The respective obligations of the
Company, on the one hand, and Purchaser, on the other hand, hereunder in connection with the Closing are subject to the following conditions being met: 

(i) the accuracy in all material respects on the Closing Date of the representations and warranties contained herein (unless
made as of a specified date therein) of the Company (with respect to the obligations of Purchaser) and Purchaser (with respect to the obligations of the Company); 

(ii) all obligations, covenants and agreements of the Company (with respect to the obligations of Purchaser) and Purchaser
(with respect to the obligations of the Company) required to be performed at or prior to the Closing Date shall have been performed in all material respects; 

(iii) the delivery by the Company (with respect to the obligations of Purchaser) and Purchaser (with respect to the
obligations of the Company) of the items set forth in Section 2.3(a) and (b) of this Agreement; 

(iv) from the date hereof to the Closing Date, trading in the Common Stock shall not have been suspended on the Company’s
principal U.S. Trading Market and, at any time prior to the Closing Date, trading in securities generally as reported by Bloomberg L.P. shall not have been suspended or limited, or minimum prices shall not have been established on securities whose
trades are reported by such service, on any U.S. Trading Market. 
 ARTICLE III. 

REPRESENTATIONS AND WARRANTIES 

3.1 Representations and Warranties of the Company. Except as set forth in the SEC Reports, which shall qualify any representation or
warranty otherwise made herein to the extent of such disclosure, the Company hereby makes the following representations and warranties set forth below to Purchaser as of the date hereof and as of the Closing Date: 

(a) Organization and Qualification. The Company and each Subsidiary is an entity duly incorporated or otherwise
organized, validly existing and in good standing under the laws of the jurisdiction of its incorporation or organization (as applicable), with the requisite power and authority to own and use its properties and assets and to carry on its business as
currently conducted. Each of the Company and the Subsidiaries is duly qualified to conduct business and is in good standing as a foreign corporation or other entity in each jurisdiction in which the nature of the business conducted or property owned
by it makes such qualification necessary, except where the failure to be so qualified or in good standing, as the case may be, would not have or reasonably be expected to result in a Material Adverse Effect. 

(b) Authorization; Enforcement. The Company has the requisite corporate power and authority to enter into this
Agreement and each other Transaction Document to which it is a party, to issue the Shares, and to consummate the other transactions contemplated by this Agreement and each other Transaction Document to which it is a party. The execution and delivery
of this Agreement and each other Transaction Documents to which it is a party by the Company and the consummation by it of the transactions contemplated hereby and thereby have been duly authorized by all necessary corporate action on the part of
the Company and no further corporate consent or action is required to be obtained by the Company, its Board of Directors or its shareholders in connection therewith. This Agreement has been, and each Transaction Document to which the Company is a
party will be upon delivery, duly executed by the Company and, when delivered in accordance with the terms hereof and thereof, will constitute the legally valid and binding obligation of the Company 

  
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enforceable against the Company in accordance with its terms except (i) as limited by general equitable principles and applicable bankruptcy, insolvency, reorganization, moratorium and other
laws of general application affecting enforcement of creditors’ rights generally, (ii) as limited by laws relating to the availability of specific performance, injunctive relief or other equitable remedies and (iii) insofar as
indemnification and contribution provisions may be limited by applicable law. 
 (c) No Conflicts. The execution,
delivery and performance of this Agreement and the Transaction Documents to which it is a party by the Company, the issuance and sale of the Shares and the consummation by the Company of the other transactions contemplated hereby and thereby do not
and will not (i) conflict with or violate any provision of the Company’s Certificate of Incorporation or bylaws, or (ii) conflict with, or constitute a default (or an event that with notice or lapse of time or both would become a
default) under, result in the creation of any lien upon any of the properties or assets of the Company, or give to others any rights of termination, amendment, acceleration or cancellation (with or without notice, lapse of time or both) of, any
material agreement to which the Company or any subsidiary is a party or by which any property or asset of the Company or any Subsidiary is bound or affected, or (iii) conflict with or result in a violation of any law, rule, regulation, order,
judgment, injunction, decree or other restriction of any court or governmental authority to which the Company or a Subsidiary is subject, or by which any property or asset of the Company or a Subsidiary is bound or affected, except in the case of
each of clauses (ii) and (iii) only, such as would not have or reasonably be expected to result in a Material Adverse Effect. 

(d) Filings, Consents and Approvals. The Company is not required to obtain any consent, waiver, authorization or order
of, give any notice to, or make any filing or registration with, any court or other federal, state, local or other governmental authority or other Person or other entity of any kind in connection with the execution, delivery and performance by the
Company of the Transaction Documents, except (i) for any filings required to be made under applicable federal and state securities laws and the listing applications with respect to the listing of the Shares required pursuant to
Section 4.4 (collectively, the “Required Approvals”) or (ii) where the failure to obtain any such consent, waiver, authorization or order, give any such notice or make any such filing or registration would not
reasonably be expected to result in a Material Adverse Effect. 
 (e) Issuance of the Shares. The Share are duly
authorized and, when issued and paid for in accordance with the applicable Transaction Documents, will be duly and validly issued, fully paid and nonassessable, free and clear of all liens imposed by the Company. The Shares are being issued pursuant
to the Registration Statement and the issuance of the Shares will be registered by the Company pursuant to the Securities Act. 

(f) Registration Statement. The Registration Statement is effective pursuant to the Securities Act and available for
the issuance of the Shares thereunder and the Company has not received any written notice that the Commission has issued or intends to issue a stop-order or other order with respect to the Registration Statement or the Prospectus or that the
Commission otherwise has (i) suspended or withdrawn the effectiveness of the Registration Statement or (ii) issued any order preventing or suspending the use of the Prospectus, in either case, either temporarily or permanently or intends
or has threatened in writing to do so. The “Plan of Distribution” section of the Registration Statement permits the issuance of the Shares hereunder. Upon receipt of the Shares, Purchaser will have good and marketable title to such Shares
and the Shares will be immediately freely tradable on each Trading Market. At the time the Registration Statement and any amendments thereto became effective, at the date of this Agreement and at each deemed effective date thereof pursuant to
Rule 430B(f)(2) of the Securities Act, the Registration Statement and any amendments thereto complied and will comply in all material respects with the requirements of the Securities Act; and the Prospectus and any amendments or supplements
thereto, at the time the Prospectus or any amendment or supplement thereto was issued and on the Closing Date, complied and will comply in all material respects with the requirements of the Securities Act. 

(g) SEC Reports; Financial Statements. The Company has complied in all material respects with requirements to file all
reports, schedules, forms, statements and other documents required to be filed by it pursuant to the Securities Act and the Exchange Act, including, without limitation, pursuant to Section 13(a) or 15(d) thereof, for the twelve months preceding
the date hereof (the foregoing materials, including the exhibits thereto and documents incorporated by reference therein, together with the Prospectus and the Prospectus Supplement, being collectively referred to herein as the “SEC
Reports”). As of their respective dates, the SEC Reports complied in all material respects with the requirements of the Securities Act and the Exchange Act, as applicable, the rules and regulations of the Commission promulgated thereunder
and other 

  
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federal, state and local laws, rules and regulations applicable to it. The financial statements of the Company included in the SEC Reports, together with the related notes and schedules thereto,
comply in all material respects with applicable accounting requirements and the rules and regulations of the Commission and all other applicable rules and regulations with respect thereto as in effect at the time of filing. Such financial
statements, together with the related notes and schedules, have been prepared in accordance with United States generally accepted accounting principles (“GAAP”) applied on a consistent basis during the periods involved, except as
may be otherwise specified in such financial statements or the notes thereto and except that unaudited financial statements may not contain all footnotes required by GAAP, and fairly present in all material respects the financial position of the
Company and its consolidated subsidiaries as of and for the dates thereof and the results of operations and cash flows for the periods then ended, subject, in the case of unaudited statements, to normal, immaterial, year-end audit adjustments. 

(h) Disclosure. Except with respect to the material terms and conditions of the transactions contemplated by the
Transaction Documents, the Company confirms that neither it nor any other Person acting on its behalf has provided any Person participating in the offering contemplated by the Prospectus Supplement that is not an Affiliate or its agents or counsel
with any information that the Company believes constitutes or might constitute material, non-public information which is not otherwise disclosed in the Prospectus Supplement. The Company understands and confirms that any Person participating in the
offering contemplated by the Prospectus Supplement that is not an Affiliate will rely solely on the foregoing representation in effecting transactions in securities of the Company. 

(i) Investment Company. The Company is not, and immediately after receipt of payment for the Shares will not be, an
“investment company” within the meaning of the Investment Company Act. 
 (j) Listing and Maintenance
Requirements. The Common Stock is registered pursuant to Section 12(b) or 12(g) of the Exchange Act, and the Company has taken no action designed to, or which to its knowledge is likely to have the effect of, terminating the registration of
the Common Stock pursuant to the Exchange Act nor has the Company received any notification that the Commission is currently contemplating terminating such registration. 

EXCEPT FOR THE REPRESENTATIONS AND WARRANTIES SET FORTH IN SECTION 3.1, THE COMPANY DOES NOT MAKE ANY OTHER REPRESENTATIONS OR WARRANTIES, WRITTEN
OR ORAL, STATUTORY, EXPRESS OR IMPLIED, WITH RESPECT TO THE COMPANY AND SUBSIDIARIES OR THE BUSINESS, OPERATIONS, ASSETS, LIABILITIES, CONDITION (FINANCIAL OR OTHERWISE) OR PROSPECTS OF THE COMPANY AND THE SUBSIDIARIES OR THE NEGOTIATION, EXECUTION,
DELIVERY OR PERFORMANCE OF THIS AGREEMENT BY THE COMPANY. 
 3.2 Representations and Warranties of Purchaser. Purchaser hereby
makes the following representations and warranties set forth below to the Company as of the date hereof and as of the Closing Date: 

(a) Organization; Authority; Enforcement. Purchaser is an entity duly organized, validly existing and in good standing
under the laws of the jurisdiction of its organization with full right, corporate or partnership power and authority to enter into and to consummate the transactions contemplated by this Agreement and the other Transaction Documents and otherwise to
carry out its obligations hereunder and thereunder. The execution, delivery and performance by Purchaser of the transactions contemplated by this Agreement have been duly authorized by all necessary corporate or similar action on the part of
Purchaser. This Agreement and each other Transaction Document to which it is a party has been duly executed by Purchaser, and when delivered by Purchaser in accordance with the terms hereof, will constitute the valid and legally binding obligation
of Purchaser, enforceable against it in accordance with its terms, except (i) as limited by general equitable principles and applicable bankruptcy, insolvency, reorganization, moratorium and other laws of general application affecting
enforcement of creditors’ rights generally, (ii) as limited by laws relating to the availability of specific performance, injunctive relief or other equitable remedies and (iii) insofar as indemnification and contribution provisions
may be limited by applicable law. 
 (b) Receipt of Disclosure Package. Purchaser represents that it has received (or
otherwise had made available to it by the filing by the Company of an electronic version thereof with the Commission on or prior to the date hereof) the Prospectus, dated May 4, 2015, which is a part of the Company’s Registration
Statement, the documents incorporated by reference therein and any free writing prospectus, prior to or in 

  
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connection with the receipt of this Agreement. Purchaser acknowledges that, prior to the delivery of this Agreement to the Company, Purchaser will receive certain additional information regarding
the offering, including pricing information which shall be consistent with the terms set forth herein. Such information may be provided to Purchaser by any means permitted under the Securities Act, including the Prospectus Supplement, a
free writing prospectus and oral communications, but all such information shall be provided prior to the execution of this Agreement by Purchaser and shall be consistent with the terms set forth herein. 

ARTICLE IV. 
 OTHER AGREEMENTS OF
THE PARTIES 
 4.1 Securities Laws Disclosure; Publicity. The Company shall (a) issue a press release disclosing the material
terms of the transactions contemplated hereby simultaneously with the execution and delivery hereof (the “Press Release”), and (b) by 5:30 p.m. (Pittsburgh, PA time) on the fourth (4th) Trading Day following the date hereof, file a Current Report on Form 8-K disclosing the material terms of the transactions contemplated hereby and
including the Transaction Documents as exhibits thereto. The Company and Purchaser shall consult with each other in issuing any other press releases with respect to the transactions contemplated hereby, and, except as may be required by law, neither
the Company nor Purchaser shall issue any such press release or otherwise make any such public statement without the prior consent of the Company, with respect to any press release of Purchaser, or without the prior consent of Purchaser, with
respect to any press release of the Company, which consent shall not unreasonably be withheld or delayed, except if such disclosure is required by law, in which case the disclosing party shall promptly provide the other party with prior notice of
such public statement or communication. Notwithstanding the foregoing, the Company shall not publicly disclose the name of Purchaser, or include the name of Purchaser in any filing with the Commission or any regulatory agency or any Trading Market,
without the prior written consent of Purchaser, except (i) in the Press Release, (ii) the filing of this Agreement (including the signature pages hereto), the Prospectus Supplement, the Press Release and the
Form 8-K with the Commission, and (iii) to the extent such disclosure is required by law or any Trading Market, in which case the Company shall provide Purchaser with prior notice of such disclosure
permitted under this subclause (iii). 
 4.2 Use of Proceeds. The Company will use the proceeds from the offering as described in the
Prospectus Supplement. 
 4.3 Listing of Common Stock. The Company hereby agrees to use commercially reasonable efforts to maintain
the listing of the Common Stock on a Trading Market, and the Company shall list all of the Shares on The NASDAQ Global Select Market no later than the Closing Date. 

4.4 Agreement Not to Sell Shares for 180 Days. Purchaser agrees that during the 180 day period beginning on the Closing Date, it
(i) will not, directly or indirectly, offer, sell, agree to offer or sell, solicit offers to purchase, grant any call option or purchase any put option with respect to, hypothecate, pledge, borrow or otherwise dispose of or agree to dispose of,
directly or indirectly, any shares of Common Stock owned by Purchaser, (ii) will not establish or increase any “put equivalent position” or liquidate or decrease any “call equivalent position” with respect to any shares of
Common Stock owned by Purchaser (in each case within the meaning of Section 16 of the Exchange Act, or otherwise enter into any swap, derivative or other transaction or arrangement that transfers to another, in whole or in part, any economic
consequences of ownership of any shares of Common Stock owned by Purchaser, whether or not such transaction is to be settled by delivery of Common Stock, other securities, cash or other consideration or (iii) publicly announce any intention to
effect any transaction specified in clause (i) or (ii). 
 4.5 Agreement Not to Acquire Additional Equity Securities. During the
180 day period beginning on the Closing Date, Rockwell agrees that neither he nor his Affiliates shall, without the prior written approval of a committee of the Board of Directors of the Company comprised of directors who are independent and
disinterested with respect to Rockwell and his Affiliates: (i) acquire, offer or propose to acquire, or agree or seek to acquire, or solicit the acquisition of, by purchase or otherwise, any equity, debt or equity-linked securities of the Company
if, following such acquisition, Rockwell and his Affiliates collectively would beneficially own more than thirty percent (30%) of the Common Stock of the Company; (ii) form, join or in any way participate in, or enter into any agreement, arrangement
or understanding with, a “group” (within the meaning of Section 13(d)(3) of the Exchange Act) with respect to any equity or equity-linked securities of the Company, that would cause Rockwell and his Affiliates collectively to beneficially
own more than thirty percent (30%) of the Common Stock of the Company; (iii) acquire, directly or indirectly, individually, through an Affiliate, or through any “group,” the right to acquire shares of Common Stock through any right, call
option, put option or warrant that would cause Rockwell and his Affiliates to beneficially own more than thirty percent (30%) of the Common Stock of the Company; or (iv) enter into any discussions, negotiations, arrangements or understanding with
any other person with respect to any of the foregoing activities. Solely for purposes of this Section 4.5, the term “Affiliate,” as defined in Section 1.1 hereof, shall also include any individual or corporation, partnership, trust,
incorporated or unincorporated association, joint venture, limited liability company or other entity of any kind, or any investment fund or managed account, that is owned, managed, directed or otherwise controlled by Rockwell or by any member of
Rockwell’s immediate family. 
 ARTICLE V. 

MISCELLANEOUS 
 5.1 Fees and
Expenses. Except as expressly set forth in the Transaction Documents to the contrary, each party shall pay the fees and expenses of its advisers, counsel, accountants and other experts, if any, and all other expenses incurred by such party
incident to the negotiation, preparation, execution, delivery and performance of this Agreement. The Company shall pay all transfer agent fees, stamp taxes and other taxes and duties levied in connection with the delivery of any Shares to Purchaser.

  
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 5.2 Entire Agreement. The Transaction Documents, together with the exhibits and schedules
thereto, contain the entire understanding of the parties with respect to the subject matter hereof and supersede all prior agreements and understandings, oral or written, with respect to such subject matter, which the parties acknowledge have been
merged into such documents, exhibits and schedules. 
 5.3 Notices. Any and all notices or other communications or deliveries
required or permitted to be provided hereunder shall be in writing and shall be deemed given and effective on the earliest of (a) the date of transmission, if such notice or communication is delivered via email at the email address set forth on
the signature pages attached hereto or facsimile at the facsimile number set forth on the signature pages attached hereto prior to 5:30 p.m. (New Pittsburgh, PA time) on a Trading Day, (b) the next Trading Day after the date of
transmission, if such notice or communication is delivered via email at the email address set forth on the signature pages attached hereto or facsimile at the facsimile number set forth on the signature pages attached hereto on a day that is not a
Trading Day or later than 5:30 p.m. (Pittsburgh, PA time) on any Trading Day, (c) the second (2nd) Trading Day following the date of mailing, if sent by U.S. nationally recognized
overnight courier service, or (d) upon actual receipt by the party to whom such notice is required to be given. The address for such notices and communications shall be as set forth on the signature pages attached hereto. 

5.4 Amendments; Waivers. No provision of this Agreement may be waived or amended except in a written instrument signed, in the case of
an amendment, by the Company and Purchaser. No waiver of any default with respect to any provision, condition or requirement of this Agreement shall be deemed to be a continuing waiver in the future or a waiver of any subsequent default or a waiver
of any other provision, condition or requirement hereof, nor shall any delay or omission of any party to exercise any right hereunder in any manner impair the exercise of any such right. 

5.5 Headings. The headings herein are for convenience only, do not constitute a part of this Agreement and shall not be deemed to limit
or affect any of the provisions hereof. 
 5.6 Successors and Assigns. This Agreement shall be binding upon and inure to the benefit
of the parties and their permitted successors and assigns. The Company may not assign this Agreement or any rights or obligations hereunder without the prior written consent of Purchaser (other than by merger). Purchaser may not assign this
Agreement or any rights or obligations hereunder without the prior written consent of the Company (other than by merger). 
 5.7 No
Third-Party Beneficiaries. This Agreement is intended for the benefit of the parties hereto and their respective permitted successors and assigns and is not for the benefit of, nor may any provision hereof be enforced by, any other Person. 

5.8 Governing Law. All questions concerning the construction, validity, enforcement and interpretation of the Transaction Documents
shall be governed by and construed and enforced in accordance with the internal laws of the State of Delaware, without regard to the principles of conflicts of law thereof. Each party agrees that all legal proceedings concerning the interpretations,
enforcement and defense of the transactions contemplated by this Agreement and any other Transaction Documents (whether brought against a party hereto or its respective Affiliates, directors, officers, shareholders, employees or agents) shall be
commenced exclusively in the state and federal courts sitting in the Wilmington, Delaware. Each party hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in the Wilmington, Delaware, for the adjudication
of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein (including with respect to the enforcement of any of the Transaction Documents), and hereby irrevocably waives, and agrees not to
assert in any suit, action or proceeding, any claim that it is not personally subject to the jurisdiction of any such court, that such suit, action or proceeding is improper or is an inconvenient venue for such proceeding. Each party hereby
irrevocably waives personal service of process and consents to process being served in any such suit, action or proceeding by mailing a copy thereof via registered or certified mail or overnight delivery (with evidence of delivery) to such party at
the address in effect for notices to it under this Agreement and agrees that such service shall constitute good and sufficient service of process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve
process in any other manner permitted by law. If either party shall commence an action or proceeding to enforce any provisions of the Transaction Documents, then the prevailing party in such action or proceeding shall be reimbursed by the other
party for its reasonable attorneys’ fees and other costs and expenses incurred with the investigation, preparation and prosecution of such action or proceeding. 

  
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 5.9 Survival. The representations and warranties contained herein shall survive the
closing and the delivery of the Shares for a period of 180 days following the Closing. The covenants contained herein shall survive the Closing indefinitely unless a specific covenant expires under its terms at an earlier time. 

5.10 Execution. This Agreement may be executed in counterparts, all of which when taken together shall be considered one and the same
agreement and shall become effective when counterparts have been signed by each party and delivered to each other party, it being understood that the parties need not sign the same counterpart. In the event that any signature on this Agreement or
any instrument is delivered by facsimile transmission or by e-mail delivery of a “.pdf” format data file, such signature shall create a legally valid and binding obligation of the party executing (or on whose behalf such signature is
executed) with the same force and effect as if such facsimile or “.pdf” signature page were an original thereof. 
 5.11
Severability. If any term, provision, covenant or restriction of this Agreement is held by a court of competent jurisdiction to be invalid, illegal, void or unenforceable, the remainder of the terms, provisions, covenants and restrictions set
forth herein shall remain in full force and effect and shall in no way be affected, impaired or invalidated, and the parties hereto shall use their commercially reasonable efforts to find and employ an alternative means to achieve the same or
substantially the same result as that contemplated by such term, provision, covenant or restriction. It is hereby stipulated and declared to be the intention of the parties that they would have executed the remaining terms, provisions, covenants and
restrictions without including any of such that may be hereafter declared invalid, illegal, void or unenforceable. 
 5.12 Remedies.
In addition to being entitled to exercise all rights provided herein or granted by law, including recovery of damages, each of Purchaser and the Company will be entitled to specific performance pursuant to the Transaction Documents. The parties
agree that monetary damages may not be adequate compensation for any loss incurred by reason of any breach of obligations contained in the Transaction Documents and hereby agree to waive and not to assert in any action for specific performance of
any such obligation the defense that a remedy at law would be adequate. 
 5.13 Construction. The parties agree that each of them
and/or their respective counsel has reviewed and had an opportunity to revise the Transaction Documents and, therefore, the normal rule of construction to the effect that any ambiguities are to be resolved against the drafting party shall not be
employed in the interpretation of the Transaction Documents or any amendments hereto. 
 5.14 WAIVER OF JURY TRIAL. IN ANY ACTION,
SUIT, OR PROCEEDING IN ANY JURISDICTION BROUGHT BY ANY PARTY AGAINST ANY OTHER PARTY, THE PARTIES EACH KNOWINGLY AND INTENTIONALLY, TO THE GREATEST EXTENT PERMITTED BY APPLICABLE LAW, HEREBY ABSOLUTELY, UNCONDITIONALLY, IRREVOCABLY AND EXPRESSLY
WAIVES FOREVER TRIAL BY JURY.  
 (Signature Pages Follow) 

  
 8 

 [Subscription Agreement — ExOne Signature Page] 

IN WITNESS WHEREOF, the parties hereto have caused this Subscription Agreement to be duly executed by their respective authorized signatories
as of the date first indicated above. 
  

			
	THE EXONE COMPANY
		
	By:	 	/s/ JoEllen Lyons Dillon
	Name:	 	JoEllen Lyons Dillon
	Title:	 	 Executive Vice President,
 Chief Legal Officer
and
 Corporate Secretary

  

	
	Address for Notices:
	
	The ExOne Company
	127 Industry Boulevard
	North Huntingdon, PA 15642
	Attention: JoEllen Lyons Dillon
	Telephone: (724) 765-1382
	Facsimile: (724) 765-1380
	Email: joellen.dillon@exone.com
	
	With a copy to:
	
	McGuireWoods LLP
	625 Liberty Avenue, 23rd Floor
	Pittsburgh, PA 15237
	Attention: Hannah T. Frank
	Telephone: (412) 667-7936
	Facsimile: (412) 667-6050
	Email: hfrank@mcguirewoods.com

 [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK; 

PURCHASER AND ROCKWELL SIGNATURE PAGES FOLLOW] 

 [Subscription Agreement — Rockwell Forest Products, Inc. Signature Page] 

IN WITNESS WHEREOF, the undersigned have caused this Subscription Agreement to be duly executed by its respective authorized signatories as of
the date first indicated above. 
  

			
	ROCKWELL FOREST PRODUCTS, INC.
		
	By:	 	/s/ S. Kent Rockwell
	S. Kent Rockwell, President

 [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK; 

ROCKWELL SIGNATURE PAGE FOLLOWS] 

 [Subscription Agreement — S. Kent Rockwell Signature Page] 

IN WITNESS WHEREOF, solely for purposes of being bound by Section 4.5 hereof, the undersigned has duly executed this Subscription Agreement as
of the late first indicated above. 
  

			
		
	 By:
	 	/s/ S. Kent Rockwell
	 S. Kent Rockwell

 [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK] 

 PURCHASER INFORMATION: 

Name: Rockwell Forest Products, Inc. 

Address for notices: 

Rockwell Forest Products, Inc. 

c/o Rockwell Venture Capital 
 980
Penn Avenue, Suite 400 
 Pittsburgh, PA 15222 

Attention: S. Kent Rockwell 

Telephone: (412) 281-4620 

Facsimile: (412) 434-8909 
 Email:
skentr@rockwellvc.com 
  

			
		
	Number of Shares to be purchased	  	1,423,877
		
	Purchase Price per Share	  	$9.13
		
	Subscription Amount	  	$12,999,997.01Exhibit

EXHIBIT 10.1

CONSULTING AGREEMENT

THIS AGREEMENT, made and entered into as of December 31, 2015, by and between SYNERGY RESOURCES CORPORATION ("the Company") and Ed Holloway ("Consultant").

In consideration of the mutual agreements, terms, and conditions herein contained, the Company and the Consultant agree as follows:

1.    Termination of Employment and Employment Agreement.  Consultant has been employed as the Co-Chief Executive Officer of the Company pursuant to an employment agreement dated June 1, 2013, as same has been amended from time to time (the “Employment Agreement”).  Consultant has tendered his resignation as an employee and executive officer of the Company, and the Company has accepted such resignation, to be effective as of December 31, 2015.  The parties hereby expressly agree that (i) Consultant shall cease to be an employee and executive officer of the Company as of December 31, 2015, and (ii) the Employment Agreement is terminated in all respects as of December 31, 2015, and neither the Company nor Consultant shall have any further rights or obligations under the Employment Agreement on and after December 31, 2015.

2.    Effective Date.  This Agreement shall be effective January 1, 2016.

3.    Services.  The Company hereby retains the Consultant to act as a consultant on behalf of the Company, effective as of January 1, 2016.  The Consultant agrees to perform the consulting services on behalf of the Company faithfully, diligently, competently, and to the best of his ability.  Neither during the term of this Agreement nor thereafter shall the Consultant use any information acquired by him in a manner adverse to the interests of the Company or do any act to damage the goodwill of the Company.  The Consultant's duties shall consist of providing advice to Lynn A. Peterson, President and new Chief Executive Officer of the Company, on an as requested basis, in the areas of acquisitions and special projects or as otherwise requested by Mr. Peterson.

4.    Compensation.  During the term of this Agreement, the Company agrees to pay and the Consultant agrees to accept as compensation, $70,000 per month, beginning January 1, 2016.  The monthly consulting fee will be payable on the 15th day of each month.  In addition to the foregoing compensation, the Company will reimburse the Consultant for the reasonable travel and lodging expenses of the Consultant and other ordinary and necessary business expenses incurred by the Consultant in the performance of his duties, and will assign to Consultant title to the black 2010 Ford 4x4 (model F150 King Ranch Crew Cab, VIN#1FTFW1EVOAKE708620) currently in the name of the Company on or as soon as administratively feasible following the effective date of this Agreement.

5.    Authorities and Obligations.  This Agreement does not constitute the Consultant as the agent or legal representative of the Company, and the Company shall not be responsible in any way for any obligation or liability incurred or assumed by the Consultant.  The Consultant represents that on and after January 1, 2016 and during the term of this Agreement he shall be an independent contractor.  The Consultant shall not be deemed in any event to be the employee or servant of the Company.  Nothing contained in this Agreement shall be deemed to authorize the Consultant as a person on which service of any summons may be made on behalf of the Company.  No partnership or joint venture is created or implied by this Agreement or by the actions of the parties contemplated by this Agreement.

Anything herein contained to the contrary notwithstanding, it is expressly understood and agreed that the Consultant shall not have the right to make any contracts for or on behalf of the Company or any affiliate without the prior written consent of the Company, and the Consultant shall not make any commitments for or on behalf of the Company or any affiliate without first obtaining written authorization from the Company to do so.

Consultant shall be responsible for the payment of all tax or other liabilities which Consultant incurs due to the receipt of any compensation from the Company, and Consultant expressly agrees to indemnify and hold the Company harmless from any and all tax liabilities which may be imposed upon the Company at any time by any governmental agency, whether federal, state, or provincial, as a result of this Agreement or the relationship created hereby.

6.    Inventions, Patent Rights and Copyrights.  Any and all work product resulting, either directly or indirectly, from the Consultant's performance under this Agreement and all proprietary or intellectual property rights therein shall be the sole and exclusive property of the Company.  All inventions made by the Consultant, during the term of this Agreement, which inventions apply to the Company's business, will be assigned to the Company.  In the event any of such inventions are of a patentable nature, Consultant agrees to apply for a patent on the invention and assign any patent rights relating to the invention to the Company.  The Company will bear the costs of any patent applications pursued by the Company.

Consultant hereby assigns to the Company any and all rights to any documents, brochures or publications prepared by the Consultant on behalf the Company, together with the right to secure copyright therefor and all extensions and renewals of copyright throughout the entire world.  The Company shall have the right to make any and all revisions, omissions, additions, changes, specifications and adaptions, in whole or in part, with respect to such documents, brochures or publications.  

7.    Engaging in a Competing Business.  The parties agree that the Consultant’s involvement in the oil and gas industry will not be deemed any conflict of interest, or other violation of this Agreement, so long as:

		
	(1)
	the Consultant does not use any Confidential Information as defined in Section 8 of this Agreement, and

		
	(2)
	until May 31, 2016 any opportunities to acquire, directly or indirectly, any interest in oil or gas properties which are in the Denver-Julesburg Basin are first offered to the Company in writing.

If the Company does not notify the Consultant in writing within ten business days after the notice described in (2) above is given of its election to pursue the opportunity, the Consultant may pursue the opportunity for his own account.

If the Company notifies the Consultant in writing within ten business days after the notice described in (2) above is given of its election to pursue the opportunity, the Consultant may not pursue the opportunity for his own account until  forty-five days after the notice from the Company of its election to pursue the opportunity is given.

Notwithstanding the foregoing, Consultant agrees that for as long as he is a director of the Company he is subject to the corporate opportunity doctrine, and nothing herein is intended to waive the Company’s right to bring a claim based on that doctrine.

8.    Confidential Information.  Consultant understands that in the course of his association with the Company, he is likely to have access to and become familiar with secret and confidential information of the Company, and its affiliates, including but not limited to, potential acquisitions, drilling targets, and drilling results, (all of which is hereinafter referred  to as “Confidential Information”), which Confidential Information is required to be maintained as secret and confidential to assure the continued success of the Company and its business.  The Consultant agrees to safeguard all Confidential Information, in any form, of the Company and will not permit its use in any way that would be detrimental to the Company.  Consultant agrees: (1) that all records of the Company, are, and shall remain the property of the Company at all times during his association with the Company and after the termination of his association, and such records are not to be transmitted in any fashion except in the ordinary course of providing consulting services for the Company, (2) to furnish on demand and any time during his association, or in the event of termination of his association or this Agreement, either voluntarily or involuntarily, and all original, duplicated, copied or transcribed Confidential Information regarding the Company and its business, (3) that he will not disclose to anyone except in the ordinary course of conducting business for the Company the Confidential Information or any other secret or proprietary information concerning the Company obtained by or entrusted to him either during, after or in contemplation of the cessation of his association with the Company, and if he threatens or attempts to do any of the foregoing, then in any suit that may be commenced by the Company for violation of this contract in that respect, Consultant agrees that any order may be made in such suit enjoining him from violating any of the provisions of this Agreement and awarding damages for any breach by him of the provisions of this Agreement.  Consultant further agrees that all the records referred to in (1) above and the Confidential Information constitute a valuable asset of the Company, the unauthorized disclosure or improper use of which would cause irreparable damage and harm to the business of the Company.  The Consultant agrees that upon the cancellation or termination of this Agreement, the Consultant will not retain copies or memoranda of such records or Confidential Information in any form.

9.    Termination.  This Agreement will expire on May 31, 2016.

10.    Notices.  All notices required or permitted to be given under this Agreement shall be in writing and shall be delivered by hand or mailed by United States mail, registered or certified, return receipt requested, postage prepaid, addressed as follows:
            
In case of notice to the Company:

Lynn A. Peterson
Synergy Resources Corporation
1625 Broadway, Suite 300
Denver, Colorado 80202

            
In case of notice to the Consultant:

Ed Holloway
3892 Tayside Court
Timnath, CO  80547

The address of either party hereto may be changed by written notice to the other party hereto given in the manner hereinabove described.  All such notices shall be deemed to have been given when delivered or mailed as aforesaid.

11.    Governing Law/Arbitration. This Agreement will construed in accordance with the laws of Colorado, without giving effect to conflict of law principles.  Any dispute or claim in any way involving this Agreement will be settled through binding arbitration pursuant to the Commercial Arbitration Rules of the American Arbitration Association in Denver, Colorado. 

12.    Miscellaneous Provisions.  This Agreement contains the entire Agreement and understanding between the parties hereto, and supersedes all prior agreements or understandings between the parties.  No representations were made or relied upon by either party, other than those that are expressly set forth.  The section headings throughout this Agreement are for convenience and reference only, and shall in no way be deemed to define, limit, or add to the meaning of any provision of this Agreement.  This Agreement and any provision hereof, may not be waived, changed, modified, or discharged orally, but only by an agreement in writing signed by the party against whom enforcement of any waiver, change, modification, or discharge is sought.  Except as otherwise expressly provided herein, no waiver of any covenant, condition, or provision of this Agreement shall be deemed to have been made unless expressly in writing and signed by the party against whom such waiver is charged; and (i) the failure of any party to insist in any one or more cases upon the performance of any of the provisions, covenants, or conditions of this Agreement or to exercise any option herein contained shall not be construed as a waiver or relinquishment for the future of any such provisions, covenants, or conditions, (ii) the acceptance of performance of anything required by this Agreement to be performed with knowledge of the breach or failure of a covenant, condition, or provision hereof shall not be deemed a waiver of such breach or failure, and (iii) no waiver by any party of one breach by another party shall be construed as a waiver with respect to any other or subsequent breach.  This Agreement shall inure to and be binding upon the heirs, executors, personal representatives, successors and assigns of each of the parties to this Agreement.  The invalidity or unenforceability of any provision of this Agreement shall not affect the validity or enforceability of any other provisions of this Agreement which shall continue in full force and effect except for any such invalid or unenforceable provision.  Neither party shall assign this Agreement without the prior express written consent of the other party.  The provisions of Sections 6, 7, 8 and 11 shall survive the termination of this Agreement.    

    

IN WITNESS WHEREOF, the parties hereto have executed this Agreement effective the day and year first above written.

SYNERGY RESOURCES CORPORATION

By:    /s/ Lynn A. Peterson
Lynn A. Peterson
President and Chief Executive Officer

/s/ Ed Holloway
Ed Holloway

Synergy Consulting Agree. CHGS 1-6-16

1

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