SECOND AMENDMENT TO THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT

THIS SECOND AMENDMENT TO THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT (this “Agreement”), is made and entered into as of May 9, 2016, by and among OHA INVESTMENT CORPORATION (formerly known as NGP Capital Resources Company), a Maryland corporation (the “Borrower”), the several banks and other financial institutions from time to time party hereto (collectively, the “Lenders”) and SUNTRUST BANK, in its capacity as Administrative Agent for the Lenders (the “Administrative Agent”).

WHEREAS, the Borrower, the Lenders and the Administrative Agent are parties to a certain Third Amended and Restated Revolving Credit Agreement, dated as of May 23, 2013 (as amended by that certain First Amendment to Third Amended and Restated Revolving Credit Agreement dated as of September 29, 2014, and as further amended, restated, supplemented or otherwise modified from time to time, the “Credit Agreement”; capitalized terms used herein and not otherwise defined shall have the meanings assigned to such terms in the Credit Agreement), pursuant to which the Lenders have made certain financial accommodations available to the Borrower;

WHEREAS, the Borrower has requested that the Lenders and the Administrative Agent amend certain provisions of the Credit Agreement, and subject to the terms and conditions hereof, the Lenders are willing to do so;

NOW, THEREFORE, for good and valuable consideration, the sufficiency and receipt of all of which are acknowledged, the Borrower, the Lenders and the Administrative Agent agree as follows:

1.Amendments. The amendments set forth in this Section 1 are referred to herein as the “Amendments”.

(a)    Section 1.1 of the Credit Agreement is hereby amended by replacing the definitions of “Commitment Termination Date” and “Senior Revolving Commitment Amount” in their entirety with the following definitions:

“Commitment Termination Date” shall mean the earliest of (i) July 29, 2016, (ii) the date on which the Aggregate Commitments are terminated pursuant to Section 2.7 and (iii) the date on which all amounts outstanding under this Agreement have been declared or have automatically become due and payable (whether by acceleration or otherwise).

“Senior Revolving Commitment Amount” shall mean the aggregate principal amount of the Senior Revolving Commitments from time to time. On the Second Amendment Effective Date, the Senior Revolving Commitment Amount equals $54,000,000.

(b)    Section 1.1 of the Credit Agreement is hereby amended by adding the definitions of “Extension Period” and “Second Amendment Effective Date” in the appropriate alphabetical order:

(c)    Section 2.2 of the Credit Agreement is hereby amended by adding the following sentence at the end thereof:

(d)    Section 2.10 of the Credit Agreement is hereby amended by adding the following clause (c) thereto:

“(c)    Immediately upon receipt by the Borrower or any of its Subsidiaries of cash proceeds from any returns of capital as a result of the refinancing, maturity or extinguishment of any portfolio investment, the Borrower shall prepay the Senior Revolving Loans in an amount equal to 100% of such proceeds received at the time of such refinancing, maturity or extinguishment, net of commissions, other reasonable and customary transaction costs, fees and expenses and taxes properly attributable to such transaction and payable by the Borrower in connection therewith (in each case, paid to non-Affiliates). Each prepayment shall be applied ratably to Base Rate Loans to the full extent thereof, and then to Eurodollar Loans to the full extent thereof. Notwithstanding the foregoing, returns of capital required to be applied to the prepayment of the Senior Revolving Loans pursuant to this Section 2.10(c) shall exclude the amounts determined by the Borrower in good faith to be necessary for the Borrower to make all required dividends and distributions to (i) maintain its status as a RIC under the Code and (ii) eliminate any income tax liability or excise tax liability on the Borrower, in each case, with respect to any taxable year or calendar year of the Borrower imposed by Section 4982 of the Code.”

(e)    Section 2.12(b) of the Credit Agreement is hereby amended by adding the following sentence at the end thereof:

(f)    Section 2.20(a) of the Credit Agreement is hereby amended by adding the following sentence at the end thereof:

“Notwithstanding the foregoing to the contrary, during the Extension Period, the Borrower shall not request and the Issuing Lender shall not be required to issue any new Letter of Credit.”

(g)    Article VII of the Credit Agreement is hereby amended by adding a new Section 7.13 to the end of such Article as follows:

“Section 7.13.    Returns on Capital. The Borrower will not, and will not permit any of its Subsidiaries to, receive non-cash returns on capital as a result of the refinancing, maturity or extinguishment of any portfolio investment except in connection with any restructuring, workout or bankruptcy proceeding with respect to any such portfolio investment to the extent the Borrower or such Subsidiary does not reasonably have the option, at the time of receipt of such non-cash return, of receiving cash in an amount equal to at least the par value of its initial investment.”

(h)    The Credit Agreement is hereby amended by replacing Schedule II to the Credit Agreement with Schedule II attached hereto as Exhibit A.

2.    Conditions to Effectiveness. Notwithstanding any other provision of this Agreement and without affecting in any manner the rights of the Lenders hereunder, it is understood and agreed that this Agreement shall become effective upon satisfaction of the following conditions: (i) the Administrative Agent shall have received executed counterparts to this Agreement from the Borrower and the Lenders, (ii) the Administrative Agent shall have received from the Borrower a duly executed Compliance Certificate dated as of the Second Amendment Effective Date (the “Second Amendment Compliance Certificate”) in form and substance reasonably satisfactory to the Administrative Agent, (iii) the Borrower shall have paid to each Lender consenting to the Amendments (each such Lender, a “Consenting Lender”) an upfront fee in an amount equal to 0.10% of such Consenting Lender’s Senior Revolving Commitment as in effect on the Second Amendment Effective Date after giving effect to the Amendments (including, for the avoidance of doubt, the reduction of the Senior Revolving Commitment Amount), (iv) to the extent the Borrower is invoiced prior to the Second Amendment Effective Date, reimbursement or payment of its costs and expenses incurred in connection with this Agreement or the Credit Agreement (including reasonable fees, charges and disbursements of King & Spalding LLP, counsel to the Administrative Agent), and (v) the Administrative Agent shall have received a certificate from an authorized officer of the Borrower in form and substance reasonably satisfactory to the Administrative Agent (a) certifying as to the incumbency of the officers of the Borrower executing this Agreement, (b) attaching resolutions of the board of directors of the Borrower approving this Agreement or confirming that resolutions previously adopted by the board of directors of the Borrower authorizing, among other things, amendments to the Credit Agreement have not been modified or replaced since the date of such resolutions, (c) attaching articles or certificate of incorporation, bylaws or comparable organizational documents of the Borrower and (d) attaching a bring-down good standing certificate of the Borrower from the Secretary of State or comparable office of the jurisdiction of organization of the Borrower.

3.    Additional Covenant. Notwithstanding anything in the Credit Agreement to the contrary, the Borrower shall not be permitted to pay management or incentive fees (excluding, for the avoidance of doubt, any payments to reimburse (x) the costs and expenses of Oak Hill Advisors, L.P. (the “External Advisor”) or (y) any indemnification payments owed to the External Advisor) pursuant to (i) the Investment Advisory Agreement, dated as of September 30, 2014, by and between the Borrower and the External Advisor or (ii) the Administration Agreement, dated as of September

30, 2014 by and between the Borrower and the External Advisor. The failure of the Borrower to comply with this Section 3 shall constitute an immediate Event of Default pursuant to Section 8.1(d) of the Credit Agreement for which there is no cure or remedy.

4.    Interest Determination. Notwithstanding anything in the Credit Agreement to the contrary, the Borrower, the Administrative Agent and the Lenders acknowledge that as of the Second Amendment Effective Date, the interest rate applicable to the outstanding Senior Revolving Loans or the letter credit fee, as the case may be, shall be calculated with reference to the Applicable Margin based on Level III set forth on Schedule I to the Credit Agreement.

5.    Representations and Warranties. To induce the Lenders and the Administrative Agent to enter into this Agreement, the Borrower hereby represents and warrants to the Lenders and the Administrative Agent that:

(a)    The Borrower and each of its Subsidiaries (other than any Foreclosed Subsidiary) (i) is duly organized, validly existing and in good standing as a corporation, partnership or limited liability company under the laws of the jurisdiction of its organization, (ii) has all requisite power and authority to carry on its business as now conducted, and (iii) is duly qualified to do business, and is in good standing, in each jurisdiction where such qualification is required, except where a failure to be so qualified would not reasonably be expected to result in a Material Adverse Effect;

(b)    The execution, delivery and performance by the Borrower of the Loan Documents to which it is a party are within the Borrower’s organizational powers and have been duly authorized by all necessary organizational, and if required, shareholder, partner or member, action;

(c)    The execution, delivery and performance by the Borrower of this Agreement and of the other Loan Documents to which it is a party (i) do not require any consent or approval of, registration or filing with, or any action by, any Governmental Authority, except those as have been obtained or made and are in full force and effect, (ii) will not violate any Requirements of Law applicable to the Borrower or any of its Subsidiaries or any judgment, order or ruling of any Governmental Authority, (iii) will not violate or result in a default under any indenture, material agreement or other material instrument binding on the Borrower or any of its Subsidiaries or any of its assets or give rise to a right thereunder to require any payment to be made by the Borrower or any of its Subsidiaries and (iv) will not result in the creation or imposition of any Lien on any asset of the Borrower or any of its Subsidiaries, except Liens (if any) created under the Loan Documents;

(d)    This Agreement has been duly executed and delivered for the benefit of or on behalf of the Borrower and constitutes a legal, valid and binding obligation of the Borrower, enforceable against the Borrower in accordance with its terms except as the enforceability hereof may be limited by bankruptcy, insolvency, reorganization, moratorium and other laws affecting creditors’ rights and remedies in general; and

(e)    After giving effect to this Agreement, the representations and warranties contained in the Credit Agreement and the other Loan Documents are true and correct in all material respects, and no Default or Event of Default has occurred and is continuing as of the date hereof.

6.    Acknowledgment of Perfection of Security Interest. The Borrower hereby acknowledges that, as of the date hereof, the security interests and liens granted to the Administrative Agent and the Lenders under the Credit Agreement and the other Loan Documents are in full force and effect, are properly perfected and are enforceable in accordance with the terms of the Credit Agreement and the other Loan Documents.

7.    Effect of Agreement. Except as set forth expressly herein, on and after the Second Amendment Effective Date, all terms of the Credit Agreement, as amended hereby on the Second Amendment Effective Date, and the other Loan Documents shall be and remain in full force and effect and shall constitute the legal, valid, binding and enforceable obligations of the Borrower to the Lenders and the Administrative Agent. The execution, delivery and effectiveness of this Agreement shall not, except as expressly provided herein, operate as a waiver of any right, power or remedy of the Lenders under the Credit Agreement, nor constitute a waiver of any provision of the Credit Agreement. This Agreement shall constitute a Loan Document for all purposes of the Credit Agreement.

8.    Governing Law.

(a)    This Agreement shall be construed in accordance with and be governed by the law (without giving effect to the conflict of law principles thereof) of the State of New York.

(b)    The Borrower hereby irrevocably and unconditionally submits, for itself and its property, to the exclusive jurisdiction of the United States District Court of the Southern District of New York, and of any state court of the State of New York sitting in New York County and any appellate court from any thereof, in any action or proceeding arising out of or relating to this Agreement or any other Loan Document or the transactions contemplated hereby or thereby, or for recognition or enforcement of any judgment, and each of the parties hereto hereby irrevocably and unconditionally agrees that all claims in respect of any such action or proceeding may be heard and determined in such New York state court or, to the extent permitted by applicable law, such Federal court. Each of the parties hereto agrees that a final judgment in any such action or proceeding shall be conclusive and may be enforced in other jurisdictions by suit on the judgment or in any other manner provided by law. Nothing in this Agreement or any other Loan Document shall affect any right that the Administrative Agent or any Lender may otherwise have to bring any action or proceeding relating to this Agreement or any other Loan Document against the Borrower or its properties in the courts of any jurisdiction.

(c)    The Borrower irrevocably and unconditionally waives any objection which it may now or hereafter have to the laying of venue of any such suit, action or proceeding described in paragraph (b) of Section 10.5 of the Credit Agreement and brought in any court referred to in paragraph (b) of Section 10.5 of the Credit Agreement. Each of the parties hereto irrevocably waives, to the fullest extent permitted by applicable law, the defense of an inconvenient forum to the maintenance of such action or proceeding in any such court.

(d)    Each party to this Agreement irrevocably consents to the service of process in the manner provided for notices in Section 10.1 of the Credit Agreement. Nothing in this Agreement or in any other Loan Document will affect the right of any party hereto to serve process in any other manner permitted by law.

9.    No Novation. This Agreement is not intended by the parties to be, and shall not be construed to be, a novation of the Credit Agreement or an accord and satisfaction in regard thereto.

10.    Counterparts. This Agreement may be executed by one or more of the parties hereto in any number of separate counterparts, each of which shall be deemed an original and all of which, taken together, shall be deemed to constitute one and the same instrument. Delivery of an executed counterpart of this Agreement by facsimile transmission or by electronic mail in pdf form shall be as effective as delivery of a manually executed counterpart hereof.

11.    Binding Nature. This Agreement shall be binding upon and inure to the benefit of the parties hereto, their respective successors, successors-in-titles, and assigns.

12.    Entire Understanding. This Agreement sets forth the entire understanding of the parties with respect to the matters set forth herein, and shall supersede any prior negotiations or agreements, whether written or oral, with respect thereto.

IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed, under seal in the case of the Borrower, by its respective authorized officers as of the day and year first above written.