Common use of Authority of the Representative Clause in Contracts

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other Underwriters. Any action by the Underwriters hereunder may be taken by the Representative on behalf of the Underwriters, and any such action taken by the Representative shall be binding on all the Underwriters. If the foregoing is in accordance with your understanding, please indicate your acceptance of this Agreement by signing in the space provided below. Very truly yours, SIXTH STREET SPECIALTY LENDING, INC. By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Chief Financial Officer SIXTH STREET SPECIALTY LENDING ADVISERS, LLC By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Vice President BOFA SECURITIES, INC. Acting on behalf of itself and the several Underwriters listed in Schedule 1 hereto. BOFA SECURITIES, INC. By: /s/ Xxxxxxxx Xxxxxxxx Name: Xxxxxxxx Xxxxxxxx Title: Managing Director Schedule 1 The Purchase Price for the Securities to be paid by the several Underwriters shall be 98.403 % of the aggregate principal amount thereof. Underwriter Principal Amount of Securities to be Purchased BofA Securities, Inc. $ 43,500,000 X.X. Xxxxxx Securities LLC $ 43,500,000 SMBC Nikko Securities America, Inc. $ 43,500,000 Xxxxxxx Xxxxx & Co. LLC $ 22,500,000 Xxxxxx Xxxxxxx & Co. LLC $ 22,500,000 RBC Capital Markets, LLC $ 22,500,000 Citigroup Global Markets Inc. $ 12,000,000 HSBC Securities (USA) Inc. $ 12,000,000 Mizuho Securities USA LLC $ 12,000,000 MUFG Securities Americas Inc. $ 12,000,000 Truist Securities, Inc. $ 12,000,000 Xxxxx Fargo Securities, LLC $ 12,000,000 Xxxxx, Xxxxxxxx & Xxxxx, Inc. $ 6,000,000 Xxxxxxxxxxx & Co. Inc. $ 6,000,000 X. Xxxxx Securities, Inc. $ 3,000,000 Xxxxx Group, LLC $ 3,000,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP Securities, LLC $ 3,000,000 Ladenburg Xxxxxxxx & Co. Inc. $ 3,000,000 Xxxxxxx Xxxxx & Associates, Inc. $ 3,000,000 Total $ 300,000,000

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other Underwriters. Any action by the Underwriters hereunder may be taken by the Representative on behalf of the Underwriters, and any such action taken by the Representative shall be binding on all the Underwriters. If the foregoing is in accordance with your understanding, please indicate your acceptance of this Agreement by signing in the space provided below. Very truly yours, SIXTH STREET TPG SPECIALTY LENDING, INC. By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Chief Financial Officer SIXTH STREET SPECIALTY LENDING TSL ADVISERS, LLC By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Vice President BOFA SECURITIES, INC. Acting on behalf of itself and the several Underwriters listed in Schedule 1 hereto. BOFA SECURITIES, INC. By: /s/ Xxxxxxxx Xxxxxxxx Xxxxxx Xxxx Name: Xxxxxxxx Xxxxxxxx Xxxxxx Xxxx Title: Managing Director Schedule 1 The Purchase Price for the Securities to be paid by the several Underwriters shall be 98.403 98.032% of the aggregate principal amount thereof. Underwriter Principal Amount of Securities to be Purchased BofA Securities, Inc. $ 43,500,000 66,000,000 X.X. Xxxxxx Securities LLC $ 43,500,000 37,500,000 Citigroup Global Markets Inc. $ 27,000,000 SunTrust Xxxxxxxx Xxxxxxxx, Inc. $ 27,000,000 Mizuho Securities USA LLC $ 15,000,000 Xxxxxxx Sachs & Co. LLC $ 15,000,000 Xxxxxx Xxxxxxx & Co. LLC $ 15,000,000 RBC Capital Markets, LLC $ 15,000,000 SMBC Nikko Securities America, Inc. $ 43,500,000 Xxxxxxx Xxxxx & Co. LLC $ 22,500,000 Xxxxxx Xxxxxxx & Co. LLC $ 22,500,000 RBC Capital Markets, LLC $ 22,500,000 Citigroup Global Markets 15,000,000 MUFG Securities Americas Inc. $ 12,000,000 HSBC Securities (USA) Inc. $ 12,000,000 Mizuho Securities USA LLC 10,500,000 ICBC Standard Bank Plc $ 12,000,000 MUFG Securities Americas Inc. $ 12,000,000 Truist Securities, Inc. $ 12,000,000 Xxxxx Fargo Securities, LLC $ 12,000,000 7,500,000 Xxxxx, Xxxxxxxx & Xxxxx, Inc. $ 6,000,000 Xxxxxxxxxxx & Co. Inc. 7,500,000 JMP Securities LLC $ 6,000,000 X. Xxxxx Securities, Inc. $ 3,000,000 Xxxxx Group, LLC $ 3,000,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP Securities, LLC $ 3,000,000 Ladenburg Xxxxxxxx & Co. Inc. $ 3,000,000 Xxxxxxx Xxxxx & Associates, Inc. $ 6,000,000 Xxxxx Fargo Securities, LLC $ 6,000,000 Xxxxxx Xxxxxxxxxx Xxxxx LLC $ 4,500,000 Santander Investment Securities Inc. $ 4,500,000 Comerica Securities, Inc. $ 3,000,000 Total $ 300,000,000

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other Underwriters. Any action by the Underwriters hereunder may be taken by the Representative on behalf of the Underwriters, and any such action taken by the Representative shall be binding on all upon the Underwriters. If the foregoing is in accordance with your understandingunderstanding of our agreement, please indicate your acceptance of kindly sign and return to the Representative the enclosed copies hereof, whereupon this Agreement by signing instrument, along with all counterparts hereof, shall become a binding agreement in the space provided belowaccordance with its terms. Very truly yours, SIXTH STREET SPECIALTY LENDING, INC. Xxxxxxx Energy Corporation By: /s/ Xxx Xxxxxxx X. Xxxxxxx, III Name: Xxxxxxx X. Xxxxxxx, III Title: President, Chief Executive Officer and Chairman of the Board of Directors The foregoing Underwriting Agreement is hereby confirmed and accepted by the Representative as of the date first above written. XXXXXXX RICE & COMPANY L.L.C. As representative of the several underwriters By: /s/ Xxxxxx X. Xxxxxxxx Name: Xxx Xxxxxx X. Xxxxxxxx Title: Chief Financial Officer SIXTH STREET SPECIALTY LENDING ADVISERS, LLC By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Vice President BOFA SECURITIES, INC. Acting on behalf Equity Member SCHEDULE A Schedule of itself and the several Underwriters listed in Schedule 1 hereto. BOFA SECURITIES, INC. By: /s/ Xxxxxxxx Xxxxxxxx Name: Xxxxxxxx Xxxxxxxx Title: Managing Director Schedule 1 The Purchase Price for the Securities to be paid by the several Underwriters shall be 98.403 % of the aggregate principal amount thereof. Underwriter Principal Amount of Securities to be Purchased BofA Securities, Inc. $ 43,500,000 X.X. Xxxxxx Securities LLC $ 43,500,000 SMBC Nikko Securities America, Inc. $ 43,500,000 Name Shares Xxxxxxx Xxxxx Xxxx & Co. LLC $ 22,500,000 Xxxxxx Xxxxxxx & Co. LLC $ 22,500,000 RBC Company L.L.C. 4,000,000 Macquarie Capital Markets, LLC $ 22,500,000 Citigroup Global Markets Inc. $ 12,000,000 HSBC Securities (USA) Inc. $ 12,000,000 Mizuho Securities USA LLC $ 12,000,000 MUFG Securities Americas 2,500,000 Xxxxxxx & Company International 800,000 Canaccord Genuity Inc. $ 12,000,000 Truist Securities675,000 Capital One Southcoast, Inc. $ 12,000,000 675,000 Xxxxx Fargo Securitiesand Company, LLC $ 12,000,000 Xxxxx675,000 Xxxxxx, Xxxxxxxx & XxxxxCompany, Inc. $ 6,000,000 Xxxxxxxxxxx Incorporated 675,000 SCHEDULE B Schedule of Information and Free Writing Prospectuses included in the Time of Sale Prospectus Free writing prospectus dated December 13, 2011 SCHEDULE C Subsidiaries of the Company None SCHEDULE D Capitalization of the Company 165,000,000 shares authorized, consisting of 150,000,000 shares of common stock, par value $.01 per share, and 15,000,000 shares of preferred stock, par value $.01 per share 1,000 shares of common stock issued and outstanding as of December 13, 2011 EXHIBIT A FORM OF OPINION OF AKIN GUMP XXXXXXX XXXXX & Co. Inc. $ 6,000,000 X. Xxxxx Securities, Inc. $ 3,000,000 Xxxxx Group, LLC $ 3,000,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP Securities, LLC $ 3,000,000 Ladenburg Xxxxxxxx & Co. Inc. $ 3,000,000 Xxxxxxx Xxxxx & Associates, Inc. $ 3,000,000 Total $ 300,000,000XXXX LLP

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other UnderwritersInitial Purchasers. Any action by the Underwriters Initial Purchasers hereunder may be taken by the Representative on behalf of the UnderwritersInitial Purchasers, and any such action taken by the Representative shall be binding on all the UnderwritersInitial Purchasers. If the foregoing is in accordance with your understanding, please indicate your acceptance of this Agreement by signing in the space provided below. Very truly yours, SIXTH STREET SPECIALTY LENDING, INC. LENDING PARTNERS By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Chief Financial Officer SIXTH STREET SPECIALTY LENDING PARTNERS ADVISERS, LLC By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Vice President BOFA SECURITIES, INC. Acting severally on behalf of itself themselves and the several Underwriters Initial Purchasers listed in Schedule 1 hereto. BOFA SECURITIES, INC. By: /s/ Xxxxxxxx Xxxxxxxx Xxxxxxx Xxxxx Name: Xxxxxxxx Xxxxxxxx Xxxxxxx Xxxxx Title: Managing Director Schedule 1 The Purchase Price for the Securities Notes to be paid by the several Underwriters Initial Purchasers shall be 98.403 97.937% of the aggregate principal amount thereof. Underwriter Initial Purchaser Principal Amount of Securities Notes to be Purchased BofA Securities, Inc. $ 43,500,000 75,000,000 X.X. Xxxxxx Securities LLC $ 43,500,000 75,000,000 RBC Capital Markets, LLC $ 75,000,000 SMBC Nikko Securities America, Inc. $ 43,500,000 75,000,000 Barclays Capital Inc. $ 36,000,000 Mizuho Securities USA LLC $ 36,000,000 Truist Securities, Inc. $ 36,000,000 Xxxxx Fargo Securities, LLC $ 36,000,000 BNP Paribas Securities Corp. $ 27,000,000 Xxxxxxx Xxxxx & Co. LLC $ 22,500,000 Xxxxxx Xxxxxxx & Co. LLC $ 22,500,000 RBC Capital Markets, LLC $ 22,500,000 Citigroup Global Markets Inc. $ 12,000,000 27,000,000 HSBC Securities (USA) Inc. $ 12,000,000 Mizuho Securities USA 27,000,000 ING Financial Markets LLC $ 12,000,000 MUFG Securities Americas Inc. $ 12,000,000 Truist Securities, Inc. $ 12,000,000 Xxxxx Fargo Securities, 27,000,000 Xxxxxx Xxxxxxx & Co. LLC $ 12,000,000 27,000,000 Xxxxx, Xxxxxxxx & Xxxxx, Inc. $ 6,000,000 Xxxxxxxxxxx 15,000,000 X. Xxxxxxx & Co. Inc. $ 6,000,000 X. Xxxxx Securities, Inc. $ 3,000,000 Xxxxx GroupCo., LLC $ 3,000,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP Securities, LLC $ 3,000,000 Ladenburg Xxxxxxxx & Co. Inc. $ 3,000,000 Xxxxxxx Xxxxx & Associates, Inc. $ 3,000,000 6,000,000 Total $ 300,000,000600,000,000

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other Underwriters. Any action by the Underwriters hereunder may be taken by the Representative on behalf of the Underwriters, and any such action taken by the Representative shall be binding on all the Underwriters. If the foregoing is in accordance with your understanding, please indicate your acceptance of this Agreement by signing in the space provided below. Very truly yours, SIXTH STREET TPG SPECIALTY LENDING, INC. By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Chief Financial Officer SIXTH STREET SPECIALTY LENDING TSL ADVISERS, LLC By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Vice President BOFA SECURITIES, INC. Acting on behalf of itself and the several Underwriters listed in Schedule 1 hereto. BOFA SECURITIES, INC. By: /s/ Xxxxxxxx Xxxxxxxx Xxxx Xxxxxx Name: Xxxxxxxx Xxxxxxxx Xxxx Xxxxxx Title: Managing Director Schedule 1 The Purchase Price for the Securities to be paid by the several Underwriters shall be 98.403 101.075% of the aggregate principal amount thereof, plus accrued and unpaid interest from November 1, 2019 up to, but not including, February 5, 2020. Underwriter Principal Amount of Securities to be Purchased BofA Securities, Inc. $ 43,500,000 11,000,000 X.X. Xxxxxx Securities LLC $ 43,500,000 6,250,000 Citigroup Global Markets Inc. 4,500,000 SunTrust Xxxxxxxx Xxxxxxxx, Inc. 4,500,000 Mizuho Securities USA LLC 2,500,000 Xxxxxxx Sachs & Co. LLC 2,500,000 Xxxxxx Xxxxxxx & Co. LLC 2,500,000 RBC Capital Markets, LLC 2,500,000 SMBC Nikko Securities America, Inc. $ 43,500,000 Xxxxxxx Xxxxx & Co. LLC $ 22,500,000 Xxxxxx Xxxxxxx & Co. LLC $ 22,500,000 RBC Capital Markets, LLC $ 22,500,000 Citigroup Global Markets 2,500,000 MUFG Securities Americas Inc. $ 12,000,000 2,000,000 HSBC Securities (USA) Inc. $ 12,000,000 Mizuho Securities USA LLC $ 12,000,000 MUFG Securities Americas Inc. $ 12,000,000 Truist Securities, Inc. $ 12,000,000 Xxxxx Fargo Securities, LLC $ 12,000,000 1,750,000 ICBC Standard Bank Plc 1,250,000 Xxxxx, Xxxxxxxx & Xxxxx, Inc. $ 6,000,000 Xxxxxxxxxxx & Co. Inc. $ 6,000,000 X. Xxxxx Securities, Inc. $ 3,000,000 Xxxxx Group, 1,250,000 JMP Securities LLC $ 3,000,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP Securities, LLC $ 3,000,000 Ladenburg Xxxxxxxx & Co. Inc. $ 3,000,000 1,000,000 Xxxxxxx Xxxxx & Associates, Inc. $ 3,000,000 1,000,000 Xxxxx Fargo Securities, LLC 1,000,000 Xxxxxx Xxxxxxxxxx Xxxxx LLC 750,000 Santander Investment Securities Inc. 750,000 Comerica Securities, Inc. 500,000 Total $ 300,000,00050,000,000 Schedule 2

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other Underwriters. Any action by the Underwriters hereunder may be taken by the Representative on behalf of the Underwriters, and any such action taken by the Representative shall be binding on all the Underwriters. If the foregoing is in accordance with your understanding, please indicate your acceptance of this Agreement by signing in the space provided below. Very truly yours, SIXTH STREET SPECIALTY LENDING, INC. By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Chief Financial Officer SIXTH STREET SPECIALTY LENDING ADVISERS, LLC By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Vice President BOFA SECURITIES, INC. Acting on behalf of itself and the several Underwriters listed in Schedule 1 hereto. BOFA SECURITIES, INC. By: /s/ Xxxxxxxx Xxxxxxx Xxxxxxxx Name: Xxxxxxxx Xxxxxxx Xxxxxxxx Title: Managing Director Schedule 1 The Purchase Price for the Securities to be paid by the several Underwriters shall be 98.403 98.036% of the aggregate principal amount thereof. Underwriter Principal Amount of Securities to be Purchased BofA Securities, Inc. $ 43,500,000 45,500,000 Xxxxxxx Xxxxx & Co. LLC $ 45,500,000 X.X. Xxxxxx Securities LLC $ 43,500,000 45,500,000 SMBC Nikko Securities America, Inc. $ 43,500,000 Xxxxxxx Xxxxx & Co. LLC $ 22,500,000 45,500,000 Xxxxxx Xxxxxxx & Co. LLC $ 22,500,000 26,250,000 RBC Capital Markets, LLC $ 22,500,000 Citigroup Global Markets Inc. $ 12,000,000 HSBC 26,250,000 HSCB Securities (USA) Inc. $ 12,000,000 Mizuho Securities USA LLC $ 12,000,000 MUFG Securities Americas Inc. $ 12,000,000 Truist Securities, Inc. $ 12,000,000 17,500,000 Xxxxx Fargo Securities, LLC $ 12,000,000 17,500,000 Citigroup Global Markets Inc. $ 14,000,000 Truist Securities Inc. $ 14,000,000 Mizuho Securities USA LLC $ 12,250,000 MUFG Securities Americas Inc. $ 12,250,000 Xxxxx, Xxxxxxxx & Xxxxx, Inc. $ 6,000,000 6,125,000 Xxxxxxxxxxx & Co. Inc. $ 6,000,000 X. Xxxxx Securities, Inc. $ 3,000,000 Xxxxx Group, LLC $ 3,000,000 6,125,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP Securities, LLC $ 3,000,000 Ladenburg Xxxxxxxx & Co. Inc. $ 3,000,000 3,500,000 Xxxxxxx Xxxxx & Associates, Inc. $ 3,000,000 3,500,000 X. Xxxxx Securities, Inc. $ 1,750,000 Citizens JMP Securities, LLC $ 1,750,000 Xxxxx Group, LLC $ 1,750,000 Ladenburg Xxxxxxxx & Co. Inc. $ 1,750,000 X. Xxxxxxx & Co., LLC $ 1,750,000 Total $ 300,000,000350,000,000

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other Underwriters. Any action by the Underwriters hereunder may be taken by the Representative on behalf of the Underwriters, and any such action taken by the Representative shall be binding on all the Underwriters. If the foregoing is in accordance with your understanding, please indicate your acceptance of this Agreement by signing in the space provided below. Very truly yours, SIXTH STREET SPECIALTY LENDING, INC. By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Chief Financial Officer SIXTH STREET SPECIALTY LENDING ADVISERS, LLC By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Vice President BOFA [Signature page to Underwriting Agreement] XXXXX FARGO SECURITIES, INC. LLC Acting on behalf of itself and the several Underwriters listed in Schedule 1 hereto. BOFA XXXXX FARGO SECURITIES, INC. LLC By: /s/ Xxxxxxxx Xxxxxxxx Xxxxx Xxxxx Name: Xxxxxxxx Xxxxxxxx Xxxxx Xxxxx Title: Managing Director Schedule 1 The Purchase Price public offering price per share for the Securities shall be $17.60. The public offering price as to each investor shall be the price paid by the several Underwriters shall be 98.403 % each investor. Name of the aggregate principal amount thereof. Underwriter Principal Amount Number of Initial Securities to be Purchased BofA Xxxxx Fargo Securities, Inc. $ 43,500,000 X.X. Xxxxxx Securities LLC $ 43,500,000 SMBC Nikko Securities America, Inc. $ 43,500,000 Xxxxxxx Xxxxx & Co. LLC $ 22,500,000 967,500 Xxxxxx Xxxxxxx & Co. LLC $ 22,500,000 RBC Capital Markets, LLC $ 22,500,000 Citigroup Global Markets Inc. $ 12,000,000 HSBC Securities (USA) Inc. $ 12,000,000 Mizuho Securities USA LLC $ 12,000,000 MUFG Securities Americas Inc. $ 12,000,000 Truist 967,500 BofA Securities, Inc. $ 12,000,000 Xxxxx Fargo Securities, LLC $ 12,000,000 675,000 Xxxxx, Xxxxxxxx & Xxxxx, Inc. $ 6,000,000 Xxxxxxxxxxx & Co. Inc. $ 6,000,000 X. Xxxxx Securities, Inc. $ 3,000,000 Xxxxx Group, LLC $ 3,000,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP Securities, LLC $ 3,000,000 Ladenburg Xxxxxxxx & Co. Inc. $ 3,000,000 450,000 Xxxxxxx Xxxxx & Associates, Inc. $ 3,000,000 Inc 450,000 RBC Capital Markets, LLC 450,000 Xxxxxxx Xxxxx & Co. LLC 270,000 X.X. Xxxxxx Securities LLC 270,000 Total $ 300,000,0004,500,000 Schedule 2 None Schedule 3 Subsidiaries of the Company

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other Underwriters. Any action by the Underwriters hereunder may be taken by the Representative on behalf of the Underwriters, and any such action taken by the Representative shall be binding on all the Underwriters. If the foregoing is in accordance with your understanding, please indicate your acceptance of this Agreement by signing in the space provided below. Very truly yours, SIXTH STREET SPECIALTY LENDING, INC. By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Chief Financial Officer SIXTH STREET SPECIALTY LENDING ADVISERS, LLC By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Vice President BOFA SECURITIES, INC[Signature page to Underwriting Agreement] XXXXXX XXXXXXX & CO. LLC Acting on behalf of itself and the several Underwriters listed in Schedule 1 hereto. BOFA SECURITIES, INCXXXXXX XXXXXXX & CO. LLC By: /s/ Xxxxxxxx Xxxxxxxx Xxxx Xxxxxx Name: Xxxxxxxx Xxxxxxxx Xxxx Xxxxxx Title: Managing Director Schedule 1 The Purchase Price for public offering price as to each investor shall be the Securities to be price paid by the several Underwriters shall be 98.403 % each investor. Name of the aggregate principal amount thereof. Underwriter Principal Amount Number of Initial Securities to be Purchased BofA Securities, Inc. $ 43,500,000 X.X. Xxxxxx Securities LLC $ 43,500,000 SMBC Nikko Securities America, Inc. $ 43,500,000 Xxxxxxx Xxxxx & Co. LLC $ 22,500,000 Xxxxxx Xxxxxxx & Co. LLC $ 22,500,000 800,000 Xxxxx Fargo Securities, LLC 800,000 BofA Securities, Inc. 500,000 RBC Capital Markets, LLC $ 22,500,000 Citigroup Global Markets Inc. $ 12,000,000 HSBC Securities (USA) Inc. $ 12,000,000 Mizuho Securities USA LLC $ 12,000,000 MUFG Securities Americas Inc. $ 12,000,000 Truist Securities, Inc. $ 12,000,000 Xxxxx Fargo Securities, LLC $ 12,000,000 500,000 Xxxxx, Xxxxxxxx & Xxxxx, Inc. $ 6,000,000 Xxxxxxxxxxx & Co. Inc. $ 6,000,000 X. Xxxxx Securities, Inc. $ 3,000,000 Xxxxx Group, LLC $ 3,000,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP Securities, LLC $ 3,000,000 Ladenburg Xxxxxxxx & Co. Inc. $ 3,000,000 400,000 Xxxxxxx Xxxxx & Associates, Inc. $ 3,000,000 400,000 Citigroup Global Markets Inc. 200,000 Xxxxxxx Xxxxx & Co. LLC 200,000 X.X. Xxxxxx Securities LLC 200,000 Total $ 300,000,0004,000,000 Schedule 2 None Schedule 3 Subsidiaries of the Company

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other Underwriters. Any action by the Underwriters hereunder may be taken by the Representative on behalf of the Underwriters, and any such action taken by the Representative shall be binding on all upon the Underwriters. If the foregoing is in accordance with your understandingunderstanding of our agreement, please indicate your acceptance of kindly sign and return the enclosed copies hereof, whereupon this Agreement by signing instrument, along with all counterparts hereof, shall become a binding agreement in the space provided belowaccordance with its terms. Very truly yours, SIXTH STREET SPECIALTY LENDING, INCGASTAR EXPLORATION LTD. By: /s/ Xxx Xxxxxxx X. Xxxxxxx Name: Xxxxxxx X. Xxxxxxx Title: Vice President and Chief Financial Officer [Signature page to Underwriting Agreement] The foregoing Underwriting Agreement is hereby confirmed and accepted by the Representative as of the date first above written. XXXXXXX RICE & COMPANY L.L.C. As representative of the several underwriters By: /s/ Xxxxxx X. Xxxxxxxx Name: Xxx Xxxxxx X. Xxxxxxxx Title: Chief Financial Officer SIXTH STREET SPECIALTY LENDING ADVISERSEquity Member [Signature page to Underwriting Agreement] SCHEDULE A Underwriters Underwriter Number of Firm Shares Xxxxxxx Xxxx & Company L.L.C. 4,800,000 Xxxxxxxxx Capital Partners, LLC By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Vice President BOFA SECURITIES2,400,000 Tudor, INC. Acting on behalf of itself and the several Underwriters listed in Schedule 1 hereto. BOFA SECURITIESPickering, INC. By: /s/ Xxxxxxxx Xxxxxxxx Name: Xxxxxxxx Xxxxxxxx Title: Managing Director Schedule 1 The Purchase Price for the Securities to be paid by the several Underwriters shall be 98.403 % of the aggregate principal amount thereof. Underwriter Principal Amount of Securities to be Purchased BofA Xxxx & Co. Securities, Inc. $ 43,500,000 X.X. Xxxxxx Securities 2,400,000 BMO Capital Markets Corp. 1,200,000 IBERIA Capital Partners, LLC $ 43,500,000 SMBC Nikko Securities America1,200,000 Total 12,000,000 SCHEDULE B Schedule of Free Writing Prospectuses included in the Time of Sale Prospectus - Free writing prospectus dated December 7, 2010 - Road show presentation dated December 7, 2010 (posted on xxx.xxxxxxxxxxx.xxx) - SCHEDULE C Subsidiaries of the Company 100% Subsidiaries owned by the Company Gastar Exploration USA, Inc. $ 43,500,000 Xxxxxxx Xxxxx & Co. LLC $ 22,500,000 Xxxxxx Xxxxxxx & Co. LLC $ 22,500,000 RBC Capital Markets, LLC $ 22,500,000 Citigroup Global Markets Inc. $ 12,000,000 HSBC Securities (Michigan) 100% Subsidiaries owned by Gastar Exploration USA) Inc. $ 12,000,000 Mizuho Securities USA LLC $ 12,000,000 MUFG Securities Americas Inc. $ 12,000,000 Truist Securities, Inc. $ 12,000,000 Xxxxx Fargo Securities, LLC $ 12,000,000 Xxxxx, Xxxxxxxx & Xxxxx(Michigan) Gastar Exploration New South Wales, Inc. $ 6,000,000 Xxxxxxxxxxx & Co. Inc. $ 6,000,000 X. Xxxxx Securities(Michigan) Gastar Exploration Victoria, Inc. $ 3,000,000 Xxxxx Group(Michigan) Gastar Exploration Texas LP (Delaware) - Gastar Exploration Texas LLC (Delaware), LLC $ 3,000,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP Securities, LLC $ 3,000,000 Ladenburg Xxxxxxxx & Co. Inc. $ 3,000,000 Xxxxxxx Xxxxx & AssociatesGeneral Partner (1%) - Gastar Exploration Texas, Inc. $ 3,000,000 Total $ 300,000,000(Michigan), Limited Partner (99%) SCHEDULE D Capitalization of the Company The Company has the authority to issue an unlimited number of common shares, no par value. As of December 6, 2010, the Company had outstanding 50,378,094 common shares and 1,110,100 shares issuable upon the exercise of outstanding stock options awarded under the Company’s 2006 Long-Term Stock Incentive Plan and 2,000,000 common shares issuable upon exercise of outstanding warrants.

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other Underwriters. Any action by the Underwriters hereunder may be taken by the Representative on behalf of the Underwriters, and any such action taken by the Representative shall be binding on all the Underwriters. If the foregoing is in accordance with your understanding, please indicate your acceptance of this Agreement by signing in the space provided below. Very truly yours, SIXTH STREET SPECIALTY LENDING, INC. OWL ROCK CAPITAL CORPORATION By: /s/ Xxx X. Xxxxxxxx Axxx Xxxxxxxxxxx Name: Xxx X. Xxxxxxxx Axxx Xxxxxxxxxxx Title: Chief Operating Officer and Chief Financial Officer SIXTH STREET SPECIALTY LENDING ADVISERS, OWL ROCK CAPITAL ADVISORS LLC By: /s/ Xxx X. Xxxxxxxx Axxx Xxxxxxxxxxx Name: Xxx X. Xxxxxxxx Axxx Xxxxxxxxxxx Title: Vice President Chief Operating Officer and Chief Financial Officer BOFA SECURITIES, INC. Acting on behalf of itself and the several Underwriters listed in Schedule 1 hereto. BOFA SECURITIES, INC. By: /s/ Xxxxxxxx Rxxxxxxx X. Xxxxxxxx Name: Xxxxxxxx Rxxxxxxx X. Xxxxxxxx Title: Managing Director Schedule 1 The Purchase Price for the Securities to be paid by the several Underwriters shall be 98.403 97.720% of the aggregate principal amount thereof. Underwriter Principal Amount of Securities to be Purchased BofA Securities, Inc. $ 43,500,000 X.X. Xxxxxx 235,558,000 Deutsche Bank Securities LLC $ 43,500,000 Inc. 102,222,000 SMBC Nikko Securities America, Inc. $ 43,500,000 Xxxxxxx Xxxxx 102,222,000 SG Americas Securities, LLC 102,222,000 Gxxxxxx Sxxxx & Co. LLC $ 22,500,000 Xxxxxx Xxxxxxx & Co. 60,000,000 ING Financial Markets LLC $ 22,500,000 62,222,000 MUFG Securities Americas Inc. 60,000,000 RBC Capital Markets, LLC $ 22,500,000 Citigroup Global Markets Inc. $ 12,000,000 HSBC Securities (USA) Inc. $ 12,000,000 Mizuho Securities USA LLC $ 12,000,000 MUFG Securities Americas Inc. $ 12,000,000 60,000,000 Truist Securities, Inc. $ 12,000,000 62,222,000 CIBC World Markets Corp. 11,111,000 Compass Point Research & Trading, LLC 11,111,000 ICBC Standard Bank Plc 11,111,000 Jxxxxx Mxxxxxxxxx Xxxxx LLC 11,111,000 JMP Securities LLC 11,111,000 Kxxxx, Bxxxxxxx & Wxxxx, Inc. 11,111,000 Ladenburg Txxxxxxx & Co. Inc. 11,111,000 PNC Capital Markets LLC 11,111,000 R. Xxxxxxx & Co., LLC 11,111,000 Rxxxxxx Jxxxx & Associates, Inc. 11,111,000 Seaport Global Securities LLC 31,111,000 Wxxxx Fargo Securities, LLC $ 12,000,000 Xxxxx, Xxxxxxxx & Xxxxx, Inc. $ 6,000,000 Xxxxxxxxxxx & Co. Inc. $ 6,000,000 X. Xxxxx Securities, Inc. $ 3,000,000 Xxxxx Group, LLC $ 3,000,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP Securities, LLC $ 3,000,000 Ladenburg Xxxxxxxx & Co. Inc. $ 3,000,000 Xxxxxxx Xxxxx & Associates, Inc. $ 3,000,000 11,111,000 Total $ 300,000,0001,000,000,000

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other Underwriters. Any action by the Underwriters hereunder may be taken by the Representative on behalf of the Underwriters, and any such action taken by the Representative shall be binding on all the Underwriters. If the foregoing is in accordance with your understanding, please indicate your acceptance of this Agreement by signing in the space provided below. Very truly yours, SIXTH STREET SPECIALTY LENDING, INC. OWL ROCK CAPITAL CORPORATION By: /s/ Xxx X. Xxxxxxxx Axxx Xxxxxxxxxxx Name: Xxx X. Xxxxxxxx Axxx Xxxxxxxxxxx Title: Chief Operating Officer and Chief Financial Officer SIXTH STREET SPECIALTY LENDING ADVISERS, OWL ROCK CAPITAL ADVISORS LLC By: /s/ Xxx X. Xxxxxxxx Axxx Xxxxxxxxxxx Name: Xxx X. Xxxxxxxx Axxx Xxxxxxxxxxx Title: Vice President Chief Operating Officer and Chief Financial Officer [Signature Page to the Underwriting Agreement] BOFA SECURITIES, INC. Acting on behalf of itself and the several Underwriters listed in Schedule 1 hereto. BOFA SECURITIES, INC. By: /s/ Xxxxxxxx Xxxxxxxx Sxxxxxx Xxxxxx Name: Xxxxxxxx Xxxxxxxx Sxxxxxx Xxxxxx Title: Managing Director Schedule 1 The Purchase Price for the Securities to be paid by the several Underwriters shall be 98.403 98.899% of the aggregate principal amount thereof, plus accrued interest from June 11, 2021 up to, but not including, the Closing Date. Underwriter Principal Amount of Securities to be Purchased BofA Securities, Inc. $ 43,500,000 X.X. Xxxxxx 82,500,000 ING Financial Markets LLC 40,000,000 MUFG Securities LLC $ 43,500,000 Americas Inc. 40,000,000 SMBC Nikko Securities America, Inc. $ 43,500,000 Xxxxxxx Xxxxx & Co. 40,000,000 Truist Securities, Inc. 40,000,000 J.X. Xxxxxx Securities LLC $ 22,500,000 Xxxxxx Xxxxxxx & Co. LLC $ 22,500,000 25,000,000 RBC Capital Markets, LLC $ 22,500,000 Citigroup Global Markets Inc. $ 12,000,000 HSBC Securities (USA) Inc. $ 12,000,000 Mizuho Securities USA LLC $ 12,000,000 MUFG Securities 25,000,000 SG Americas Inc. $ 12,000,000 Truist Securities, LLC 25,000,000 Compass Point Research & Trading, LLC 7,500,000 ICBC Standard Bank Plc 7,500,000 JMP Securities LLC 7,500,000 Kxxxx, Bxxxxxxx & Wxxxx, Inc. $ 12,000,000 Xxxxx 7,500,000 Ladenburg Txxxxxxx & Co. Inc. 7,500,000 Oxxxxxxxxxx & Co. Inc. 7,500,000 PNC Capital Markets LLC 7,500,000 Rxxxxxx Jxxxx & Associates, Inc. 7,500,000 R. Xxxxxxx & Co., LLC 7,500,000 Seaport Global Securities LLC 7,500,000 Wxxxx Fargo Securities, LLC $ 12,000,000 Xxxxx, Xxxxxxxx & Xxxxx, Inc. $ 6,000,000 Xxxxxxxxxxx & Co. Inc. $ 6,000,000 X. Xxxxx Securities, Inc. $ 3,000,000 Xxxxx Group, LLC $ 3,000,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP Securities, LLC $ 3,000,000 Ladenburg Xxxxxxxx & Co. Inc. $ 3,000,000 Xxxxxxx Xxxxx & Associates, Inc. $ 3,000,000 7,500,000 Total $ 300,000,000400,000,000

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other Underwriters. Any action by the Underwriters hereunder may be taken by the Representative on behalf of the Underwriters, and any such action taken by the Representative shall be binding on all the Underwriters. If the foregoing is in accordance with your understanding, please indicate your acceptance of this Agreement by signing in the space provided below. Very truly yours, SIXTH STREET SPECIALTY LENDING, INC. By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Chief Financial Officer SIXTH STREET SPECIALTY LENDING ADVISERS, LLC By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Vice President BOFA SECURITIES, INC[Signature page to Underwriting Agreement] XXXXXX XXXXXXX & CO. LLC Acting on behalf of itself and the several Underwriters listed in Schedule 1 hereto. BOFA SECURITIES, INCXXXXXX XXXXXXX & CO. LLC By: /s/ Xxxxxxxx Xxxxxxxx Xxxxxxx Xxxx Name: Xxxxxxxx Xxxxxxxx Xxxxxxx Xxxx Title: Managing Director Schedule 1 The Purchase Price public offering price per share for the Securities shall be $21.65. The public offering price as to each investor shall be the price paid by the several Underwriters shall be 98.403 % each investor. Name of the aggregate principal amount thereof. Underwriter Principal Amount Number of Initial Securities to be Purchased Xxxxxx Xxxxxxx & Co. LLC 1,000,000 BofA Securities, Inc. $ 43,500,000 X.X. Xxxxxx Securities 600,000 Xxxxx Fargo Securities, LLC $ 43,500,000 SMBC Nikko Securities America, Inc. $ 43,500,000 600,000 Xxxxxxx Xxxxx & Co. LLC $ 22,500,000 Xxxxxx Xxxxxxx & Co. LLC $ 22,500,000 RBC Capital Markets, LLC $ 22,500,000 Citigroup Global Markets Inc. $ 12,000,000 HSBC Securities (USA) Inc. $ 12,000,000 Mizuho Securities USA LLC $ 12,000,000 MUFG Securities Americas Inc. $ 12,000,000 Truist Securities, Inc. $ 12,000,000 Xxxxx Fargo Securities, LLC $ 12,000,000 400,000 Xxxxx, Xxxxxxxx & Xxxxx, Inc. $ 6,000,000 Xxxxxxxxxxx & Co. Inc. $ 6,000,000 X. Xxxxx Securities, Inc. $ 3,000,000 Xxxxx Group, LLC $ 3,000,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP Securities, LLC $ 3,000,000 Ladenburg Xxxxxxxx & Co. Inc. $ 3,000,000 400,000 Xxxxxxx Xxxxx & Associates, Inc. $ 3,000,000 400,000 RBC Capital Markets, LLC 400,000 JMP Securities LLC 200,000 Total $ 300,000,0004,000,000 Xxxxxxxx 0 0. Xxxx Schedule 3 Subsidiaries of the Company

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other Underwriters. Any action by the Underwriters hereunder may be taken by the Representative on behalf of the Underwriters, and any such action taken by the Representative shall be binding on all upon the Underwriters. 2085477v11 If the foregoing is in accordance with your understandingunderstanding of our agreement, please indicate your acceptance of kindly sign and return the enclosed copies hereof, whereupon this Agreement by signing instrument, along with all counterparts hereof, shall become a binding agreement in the space provided belowaccordance with it terrms. Very truly yours, SIXTH STREET SPECIALTY LENDING, ABRAXAS PETROLEUM CORPORATION By: /s/Rxxxxx L.X. Xxxxxx Name: Rxxxxx L.X. Xxxxxx Title: President & CEO SELLING STOCKHOLDERS: CITIGROUP GLOBAL MARKETS INC. By: /s/ Xxx X. Xxxxxxxx Kxxxx Xxxxxxx Name: Xxx X. Xxxxxxxx Kxxxx Xxxxxxx Title: Chief Financial Officer SIXTH STREET SPECIALTY LENDING ADVISERSHead of Equities Trading for the Americas VALLEY ENERGY INVESTMENT FUND U.S., L.P. By: /s/ Exxxx x. De La Cxxx Xxxxxxx Name: Exxxx X. De La Cxxx Xxxxxxx Title: Authorized Signatory TORTOISE CAPITAL RESOURCES CORPORATION By: /s/ Txxxx Xxxxxxx Name: Txxxx Xxxxxxx Title: CEO & Managing Director for Tortoise [Signature page to Underwriting Agreement] MXXXXX X XXXXXXX ASSOCIATES By: /s/ Mxxxxx X. Xxxxxxx Name: Mxxxxx X. Xxxxxxx Title: Manager MEDDS III By: /s/ Mxxxxx X. Xxxxxxx Name: Mxxxxx X. Xxxxxxx Title: Manager HXXXX CAPITAL INVESTMENTS, LLC By: /s/ Xxx Rxxxxx X. Xxxxx Name: Rxxxxx X. Xxxxx Title: Chief Operating Officer [Signature page to Underwriting Agreement] The foregoing Underwriting Agreement is hereby confirmed and accepted by the Representative as of the date first above written. JXXXXXX RICE & COMPANY L.L.C. As representative of the several underwriters By: /s/Jxxxx X. Xxxxxxxx Name: Xxx Jxxxxx X. Xxxxxxxx Title: Vice President BOFA SECURITIES, INC. Acting on behalf Equity Member [Signature page to Underwriting Agreement] SCHEDULE A Underwriters Underwriter Number of itself and the several Underwriters listed in Schedule 1 hereto. BOFA SECURITIES, INC. By: /s/ Xxxxxxxx Xxxxxxxx Name: Xxxxxxxx Xxxxxxxx Title: Managing Director Schedule 1 The Purchase Price for the Securities to be paid by the several Underwriters shall be 98.403 % of the aggregate principal amount thereof. Underwriter Principal Amount of Securities Firm Shares to be Purchased BofA Jxxxxxx Rxxx & Company L. L. C. 7,586,238 Canaccord Genuity Inc. 6,151,004 Sxxxxx, Xxxxxxxx & Company, Incorporated 5,125,837 Wxxxxxxxxx Securities, Inc. $ 43,500,000 X.X. Xxxxxx Securities LLC $ 43,500,000 SMBC Nikko Securities America, Inc. $ 43,500,000 Xxxxxxx Xxxxx & Co. LLC $ 22,500,000 Xxxxxx Xxxxxxx & Co. LLC $ 22,500,000 RBC Capital Markets, LLC $ 22,500,000 Citigroup Global Markets Inc. $ 12,000,000 HSBC Securities (USA) Inc. $ 12,000,000 Mizuho Securities USA LLC $ 12,000,000 MUFG Securities Americas Inc. $ 12,000,000 Truist Securities, Inc. $ 12,000,000 Xxxxx Fargo Securities, LLC $ 12,000,000 Xxxxx, Xxxxxxxx & Xxxxx, Inc. $ 6,000,000 Xxxxxxxxxxx 820,134 Ladenburg Txxxxxxx & Co. Inc. $ 6,000,000 820,134 2085477v1 SCHEDULE B Selling Stockholders Selling Stockholder Number of Firm Shares to be Sold Citigroup Global Markets, Inc. 300 Xxxxxxxxx Xxxxxx, 0xx Xxxxx Xxx Xxxx, Xxx Xxxx 00000 3,430,786 Valley Energy Investment Fund U.S., L.P. 200 X. Xxxxx SecuritiesStreet NC-027-40-03; 40xx Xxxxx Xxxxxxxxx, Inc. $ 3,000,000 Xxxxx GroupXxxxxxxx 00000 Attention: Wxxxxxx Xxxxxx 2,422,154 Tortoise Capital Resources Corporation 10000 Xxx Xxxxxx, Xxxxx 000 Xxxxxxx, Xxxxxx 00000 1,646,376 Hxxxx Capital Investments, LLC $ 3,000,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP Securities400 Xxxxx Xxxxx Xxxxxxxx, LLC $ 3,000,000 Ladenburg Xxxxxxxx & Co. Inc. $ 3,000,000 Xxx Xxxxxx 00000 Attn: Nxxx X. Xxxxxx Facsimile No.: (000) 000-0000 865,056 Mxxxxx X. Xxxxxxx Associates Attn: Mxxxxx X. Xxxxxxx 500 Xxxxx & AssociatesXxxxxx Closter, Inc. $ 3,000,000 Total $ 300,000,000New Jersey 07624 62,695 MEDDS III c/o Mxxxxx X. Xxxxxxx Associates Attn: Mxxxxx X. Xxxxxxx 500 Xxxxx Xxxxxx Closter, New Jersey 07624 76,280 Total: 8,503,347 2085477v1 SCHEDULE C Schedule of Free Writing Prospectuses included in the Time of Sale Prospectus - Free writing prospectus dated January 26, 2000 - Xxxx show presentation dated January 18, 2011 (posted on wxx.xxxxxxxxxxx.xxx) 2085477v1 SCHEDULE D Subsidiaries of the Company

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other Underwriters. Any action by the Underwriters hereunder may be taken by the Representative on behalf of the Underwriters, and any such action taken by the Representative shall be binding on all the Underwriters. If the foregoing is in accordance with your understanding, please indicate your acceptance of this Agreement by signing in the space provided below. Very truly yours, SIXTH STREET SPECIALTY LENDING, INC. OWL ROCK CAPITAL CORPORATION By: /s/ Xxx X. Xxxxxxxx Axxx Xxxxxxxxxxx Name: Xxx X. Xxxxxxxx Axxx Xxxxxxxxxxx Title: Chief Operating Officer and Chief Financial Officer SIXTH STREET SPECIALTY LENDING ADVISERS, OWL ROCK CAPITAL ADVISORS LLC By: /s/ Xxx X. Xxxxxxxx Axxx Xxxxxxxxxxx Name: Xxx X. Xxxxxxxx Axxx Xxxxxxxxxxx Title: Vice President Chief Operating Officer and Chief Financial Officer BOFA SECURITIES, INC. Acting on behalf of itself and the several Underwriters listed in Schedule 1 hereto. BOFA SECURITIES, INC. By: /s/ Xxxxxxxx Xxxxxxxx Sxxxx Xxxxxx Name: Xxxxxxxx Xxxxxxxx Sxxxx Xxxxxx Title: Managing Director Schedule 1 The Purchase Price for the Securities to be paid by the several Underwriters shall be 98.403 97.754% of the aggregate principal amount thereof. Underwriter Principal Amount of Securities to be Purchased BofA Securities, Inc. $ 43,500,000 X.X. Xxxxxx 112,000,000 ING Financial Markets LLC 54,400,000 MUFG Securities Americas Inc. 54,400,000 SG Americas Securities, LLC $ 43,500,000 54,400,000 SMBC Nikko Securities America, Inc. $ 43,500,000 Xxxxxxx Xxxxx & Co. LLC $ 22,500,000 Xxxxxx Xxxxxxx & Co. LLC $ 22,500,000 RBC Capital Markets, LLC $ 22,500,000 Citigroup Global Markets Inc. $ 12,000,000 HSBC Securities (USA) Inc. $ 12,000,000 Mizuho Securities USA LLC $ 12,000,000 MUFG Securities Americas Inc. $ 12,000,000 54,400,000 Truist Securities, Inc. $ 12,000,000 Xxxxx 54,400,000 Compass Point Research & Trading, LLC 6,000,000 ICBC Standard Bank Plc 6,000,000 JMP Securities LLC 6,000,000 Kxxxx, Bxxxxxxx & Wxxxx, Inc. 6,000,000 Ladenburg Txxxxxxx & Co. Inc. 6,000,000 Oxxxxxxxxxx & Co. Inc. 6,000,000 PNC Capital Markets LLC 6,000,000 R. Xxxxxxx & Co., LLC 6,000,000 Rxxxxxx Jxxxx & Associates, Inc. 6,000,000 Seaport Global Securities LLC 6,000,000 Wxxxx Fargo Securities, LLC $ 12,000,000 Xxxxx, Xxxxxxxx & Xxxxx, Inc. $ 6,000,000 Xxxxxxxxxxx & Co. Inc. $ 6,000,000 X. Xxxxx Securities, Inc. $ 3,000,000 Xxxxx Group, LLC $ 3,000,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP Securities, LLC $ 3,000,000 Ladenburg Xxxxxxxx & Co. Inc. $ 3,000,000 Xxxxxxx Xxxxx & Associates, Inc. $ 3,000,000 Total $ 300,000,000450,000,000 Schedule 2

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other Underwriters. Any action by the Underwriters hereunder may be taken by the Representative Representatives on behalf of the Underwriters, and any such action taken by the Representative Representatives shall be binding on all upon the Underwriters. If the foregoing is in accordance with your understandingunderstanding of our agreement, please indicate your acceptance of kindly sign and return the enclosed copies hereof, whereupon this Agreement by signing instrument, along with all counterparts hereof, shall become a binding agreement in the space provided belowaccordance with it terms. Very truly yours, SIXTH STREET SPECIALTY LENDING, ABRAXAS PETROLEUM CORPORATION By: /s/ Xxxxxx X.X. Xxxxxx Name: Xxxxxx X.X. Xxxxxx Title: President & CEO The foregoing Underwriting Agreement is hereby confirmed and accepted by the Representatives as of the date first above written. XXXXXXXX INC. CANACCORD GENUITY INC. XXXXXX X. XXXXX & CO. INCORPORATED As representatives of the several underwriters XXXXXXXX INC. By: /s/ Xxx X. Xxxxxxxx Xxxx Xxxxxxx Name: Xxx X. Xxxxxxxx Xxxx Xxxxxxx Title: Chief Financial Officer SIXTH STREET SPECIALTY LENDING ADVISERS, LLC By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Executive Vice President BOFA SECURITIES, INC. Acting on behalf of itself and the several Underwriters listed in Schedule 1 hereto. BOFA SECURITIES, CANACCORD GENUITY INC. By: /s/ Xxxxxxxx Xxxxxxxx Xxxx Name: Xxxxxxxx Xxxxxxxx Xxxx Title: Managing Director Schedule 1 The Purchase Price for the Securities to be paid by the several XXXXXX X. XXXXX & CO. INCORPORATED By: /s/ Xxxxxx Xxxx Name: Xxxxxx Xxxx Title: Managing Director – Investment Banking SCHEDULE A Underwriters shall be 98.403 % Underwriter Number of the aggregate principal amount thereof. Underwriter Principal Amount of Securities Firm Shares to be Purchased BofA Securities, Xxxxxxxx Inc. $ 43,500,000 X.X. 2,645,800 Canaccord Genuity Inc. 2,645,800 Xxxxxx Securities LLC $ 43,500,000 SMBC Nikko Securities America, Inc. $ 43,500,000 Xxxxxxx X. Xxxxx & Co. LLC $ 22,500,000 Xxxxxx Xxxxxxx & Co. LLC $ 22,500,000 RBC Capital Markets, LLC $ 22,500,000 Citigroup Incorporated 2,608,400 Global Markets Inc. $ 12,000,000 HSBC Securities (USA) Inc. $ 12,000,000 Mizuho Securities USA LLC $ 12,000,000 MUFG Securities Americas Inc. $ 12,000,000 Truist Securities, Inc. $ 12,000,000 Xxxxx Fargo Hunter Securities, LLC $ 12,000,000 Xxxxx, Xxxxxxxx 700,000 Xxxxxxx Xxxx & Xxxxx, Inc. $ 6,000,000 Xxxxxxxxxxx & Co. Inc. $ 6,000,000 X. Xxxxx Securities, Inc. $ 3,000,000 Xxxxx Group, LLC $ 3,000,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP Securities, LLC $ 3,000,000 Company L.L.C. 400,000 Ladenburg Xxxxxxxx & Co. Inc. $ 3,000,000 Xxxxxxx Xxxxx & Associates400,000 SunTrust Xxxxxxxx Xxxxxxxx, Inc. $ 3,000,000 400,000 Euro Pacific Capital, Inc. 75,000 KLR Group, LLC 75,000 SG Americas Securities, LLC 50,000 Total $ 300,000,00010,000,000 SCHEDULE B Schedule of Free Writing Prospectuses included in the Time of Sale Prospectus

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other Underwriters. Any action by the Underwriters hereunder may be taken by the Representative on behalf of the Underwriters, and any such action taken by the Representative shall be binding on all the Underwriters. If the foregoing is in accordance with your understanding, please indicate your acceptance of this Agreement by signing in the space provided below. Very truly yours, SIXTH STREET SPECIALTY LENDING, INC. OWL ROCK CAPITAL CORPORATION By: /s/ Xxx X. Xxxxxxxx Axxx Xxxxxxxxxxx Name: Xxx X. Xxxxxxxx Axxx Xxxxxxxxxxx Title: Chief Operating Officer and Chief Financial Officer SIXTH STREET SPECIALTY LENDING ADVISERS, OWL ROCK CAPITAL ADVISORS LLC By: /s/ Xxx X. Xxxxxxxx Axxx Xxxxxxxxxxx Name: Xxx X. Xxxxxxxx Axxx Xxxxxxxxxxx Title: Vice President Chief Operating Officer and Chief Financial Officer BOFA SECURITIES, INC. Acting on behalf of itself and the several Underwriters listed in Schedule 1 hereto. BOFA SECURITIES, INC. By: /s/ Xxxxxxxx Rxxxxxxx X. Xxxxxxxx Name: Xxxxxxxx Rxxxxxxx X. Xxxxxxxx Title: Managing Director Schedule 1 The Purchase Price for the Securities to be paid by the several Underwriters shall be 98.403 98.037% of the aggregate principal amount thereof. Underwriter Principal Amount of Securities to be Purchased BofA Securities, Inc. $ 43,500,000 X.X. 112,000,000 J.X. Xxxxxx Securities LLC $ 43,500,000 48,000,000 MUFG Securities Americas Inc. 48,000,000 RBC Capital Markets, LLC 48,000,000 SMBC Nikko Securities America, Inc. $ 43,500,000 Xxxxxxx Xxxxx 48,000,000 Deutsche Bank Securities Inc. 26,000,000 Gxxxxxx Sachs & Co. LLC $ 22,500,000 Xxxxxx Xxxxxxx & Co. 26,000,000 ING Financial Markets LLC $ 22,500,000 RBC Capital Markets26,000,000 SG Americas Securities, LLC $ 22,500,000 Citigroup Global Markets Inc. $ 12,000,000 HSBC Securities (USA) Inc. $ 12,000,000 Mizuho Securities USA LLC $ 12,000,000 MUFG Securities Americas Inc. $ 12,000,000 26,000,000 Truist Securities, Inc. $ 12,000,000 Xxxxx 26,000,000 Compass Point Research & Trading, LLC 6,000,000 ICBC Standard Bank Plc 6,000,000 JMP Securities LLC 6,000,000 Kxxxx, Bxxxxxxx & Wxxxx, Inc. 6,000,000 Ladenburg Txxxxxxx & Co. Inc. 6,000,000 Oxxxxxxxxxx & Co. Inc. 6,000,000 PNC Capital Markets LLC 6,000,000 R. Xxxxxxx & Co., LLC 6,000,000 Rxxxxxx Jxxxx & Associates, Inc. 6,000,000 Seaport Global Securities LLC 6,000,000 Wxxxx Fargo Securities, LLC $ 12,000,000 Xxxxx, Xxxxxxxx & Xxxxx, Inc. $ 6,000,000 Xxxxxxxxxxx & Co. Inc. $ 6,000,000 X. Xxxxx Securities, Inc. $ 3,000,000 Xxxxx Group, LLC $ 3,000,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP Securities, LLC $ 3,000,000 Ladenburg Xxxxxxxx & Co. Inc. $ 3,000,000 Xxxxxxx Xxxxx & Associates, Inc. $ 3,000,000 Total $ 300,000,000500,000,000 Schedule 2

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other Underwriters. Any action by the Underwriters hereunder may be taken by the Representative on behalf of the Underwriters, and any such action taken by the Representative shall be binding on all upon the Underwriters. If the foregoing is in accordance with your understandingunderstanding of our agreement, please indicate your acceptance of kindly sign and return to the Representative the enclosed copies hereof, whereupon this Agreement by signing instrument, along with all counterparts hereof, shall become a binding agreement in the space provided belowaccordance with its terms. Very truly yours, SIXTH STREET SPECIALTY LENDING, INC. XXXXXXX ENERGY CORPORATION By: /s/ Xxx Xxxxxxx X. Xxxx Name: Xxxxxxx X. Xxxx Title: Senior Vice President, Chief Financial Officer and Secretary Signature Page to Underwriting Agreement The foregoing Underwriting Agreement is hereby confirmed and accepted by the Representative as of the date first above written. XXXXXXX RICE & COMPANY L.L.C. As representative of the several underwriters By: /s/ Xxxxxx X. Xxxxxxxx Name: Xxx Xxxxxx X. Xxxxxxxx Title: Chief Financial Officer SIXTH STREET SPECIALTY LENDING ADVISERS, LLC By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Vice President BOFA SECURITIES, INC. Acting on behalf Equity Member SCHEDULE A Schedule of itself and the several Underwriters listed in Schedule 1 hereto. BOFA SECURITIES, INC. By: /s/ Xxxxxxxx Xxxxxxxx Name: Xxxxxxxx Xxxxxxxx Title: Managing Director Schedule 1 The Purchase Price for the Securities to be paid by the several Underwriters shall be 98.403 % Name Number of the aggregate principal amount thereof. Underwriter Principal Amount of Securities to be Purchased BofA Securities, Inc. $ 43,500,000 X.X. Xxxxxx Securities LLC $ 43,500,000 SMBC Nikko Securities America, Inc. $ 43,500,000 Shares Xxxxxxx Xxxxx Xxxx & Co. LLC $ 22,500,000 Xxxxxx Xxxxxxx & Co. LLC $ 22,500,000 Company L.L.C. 4,848,000 RBC Capital Markets, LLC $ 22,500,000 Citigroup 1,920,000 Capital One Securities, Inc. 576,000 SunTrust Xxxxxxxx Xxxxxxxx, Inc. 576,000 Canaccord Genuity Inc. 240,000 Global Markets Inc. $ 12,000,000 HSBC Securities Hunter Securities, LLC 240,000 Macquarie Capital (USA) Inc. $ 12,000,000 Mizuho Securities USA LLC $ 12,000,000 MUFG Securities Americas Inc. $ 12,000,000 Truist Securities, Inc. $ 12,000,000 240,000 Xxxxxx Xxxxx Fargo Securities+ Co., LLC $ 12,000,000 Xxxxx240,000 Xxxxxxx & Company International 240,000 Xxxxxxxx Inc. 240,000 Xxxxxx, Xxxxxxxx & XxxxxCompany, Inc. $ 6,000,000 Xxxxxxxxxxx & Co. Inc. $ 6,000,000 X. Xxxxx SecuritiesIncorporated 240,000 TOTAL 9,600,000 SCHEDULE B Schedule of Information and Free Writing Prospectuses included in the Time of Sale Prospectus Free Writing Prospectus dated September 12, Inc. $ 3,000,000 Xxxxx Group2013 SCHEDULE C Other Information None SCHEDULE D Subsidiaries SEP Holdings III, LLC $ 3,000,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP SecuritiesDelaware XX Xxxxxxx LLC Delaware SN Cotulla Assets, LLC $ 3,000,000 Ladenburg Xxxxxxxx Texas SN Midstream, LLC Delaware SN Operating, LLC Texas SN TMS, LLC Delaware EXHIBIT A FORM OF OPINION OF AKIN GUMP XXXXXXX XXXXX & Co. Inc. $ 3,000,000 Xxxxxxx Xxxxx & Associates, Inc. $ 3,000,000 Total $ 300,000,000XXXX LLP

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other Underwriters. Any action by the Underwriters hereunder may be taken by the Representative on behalf of the Underwriters, and any such action taken by the Representative shall be binding on all the Underwriters. If the foregoing is in accordance with your understanding, please indicate your acceptance of this Agreement by signing in the space provided below. Very truly yours, SIXTH STREET SPECIALTY LENDING, INC. By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Chief Financial Officer SIXTH STREET SPECIALTY LENDING ADVISERS, LLC By: /s/ Xxx X. Xxxxxxxx Name: Xxx X. Xxxxxxxx Title: Vice President BOFA SECURITIES, INC. Acting on behalf of itself and the several Underwriters listed in Schedule 1 hereto. BOFA SECURITIES, INC. By: /s/ Xxxxxxxx X. Xxxxxxxx Name: Xxxxxxxx X. Xxxxxxxx Title: Managing Director Schedule 1 The Purchase Price for the Securities to be paid by the several Underwriters shall be 98.403 98.268% of the aggregate principal amount thereof. Underwriter Principal Amount of Securities to be Purchased BofA Securities, Inc. $ 43,500,000 54,000,000 X.X. Xxxxxx Securities LLC $ 43,500,000 54,000,000 SMBC Nikko Securities America, Inc. $ 43,500,000 30,000,000 Citigroup Global Markets Inc. 18,000,000 Xxxxxxx Xxxxx & Co. LLC $ 22,500,000 Xxxxxx Xxxxxxx & Co. LLC $ 22,500,000 RBC Capital Markets, LLC $ 22,500,000 Citigroup Global Markets Inc. $ 12,000,000 18,000,000 HSBC Securities (USA) Inc. $ 12,000,000 6,000,000 Mizuho Securities USA LLC $ 12,000,000 15,000,000 Xxxxxx Xxxxxxx & Co. LLC 15,000,000 MUFG Securities Americas Inc. $ 12,000,000 18,000,000 RBC Capital Markets, LLC 18,000,000 Truist Securities, Inc. $ 12,000,000 18,000,000 Xxxxx Fargo Securities, LLC $ 12,000,000 6,000,000 Comerica Securities, Inc. 3,000,000 ICBC Standard Bank Plc 4,500,000 Xxxxxx Xxxxxxxxxx Xxxxx LLC 3,000,000 JMP Securities LLC 3,000,000 Xxxxx, Xxxxxxxx & Xxxxx, Inc. $ 6,000,000 Xxxxxxxxxxx & Co. Inc. $ 6,000,000 X. Xxxxx Securities, Inc. $ 3,000,000 Xxxxx GroupXxxxxxx & Co., LLC $ 3,000,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP Securities, LLC $ 3,000,000 Ladenburg Xxxxxxxx & Co. Inc. $ 3,000,000 Xxxxxxx Xxxxx & Associates, Inc. $ 3,000,000 Santander Investment Securities Inc. 4,500,000 Total $ 300,000,000300,000,000 Schedule 2

Authority of the Representative. The Representative is duly authorized to act hereunder on behalf of the other Underwriters. Any action by the Underwriters hereunder may be taken by the Representative on behalf of the Underwriters, and any such action taken by the Representative shall be binding on all upon the Underwriters. [Signature Page Follows] Signature Page to Underwriting Agreement If the foregoing is in accordance with your understandingunderstanding of our agreement, please indicate your acceptance of kindly sign and return to the Representative the enclosed copies hereof, whereupon this Agreement by signing instrument, along with all counterparts hereof, shall become a binding agreement in the space provided belowaccordance with its terms. Very truly yours, SIXTH STREET SPECIALTY LENDING, INC. SYNERGY RESOURCES CORPORATION By: /s/ Xxx Xxxxx X. Xxxxxxxx ---------------------- Name: Xxx Xxxxx X. Xxxxxxxx Title: Chief Financial Officer SIXTH STREET SPECIALTY LENDING ADVISERS, LLC CFO The foregoing Underwriting Agreement is hereby confirmed and accepted by the Representative as of the date first above written. XXXXXXX XXXX & COMPANY L.L.C. As representative of the several underwriters By: /s/ Xxx Xxxxxx X. Xxxxxxxx -------------------------------------- Name: Xxx Xxxxxx X. Xxxxxxxx Title: Vice President BOFA SECURITIES, INC. Acting on behalf Equity Member SCHEDULE A Schedule of itself and the several Underwriters listed in Schedule 1 hereto. BOFA SECURITIES, INC. By: /s/ Xxxxxxxx Xxxxxxxx Name: Xxxxxxxx Xxxxxxxx Title: Managing Director Schedule 1 The Purchase Price for the Securities to be paid by the several Underwriters shall be 98.403 % Name Number of the aggregate principal amount thereof. Underwriter Principal Amount of Securities to be Purchased BofA Shares Xxxxxxx Rice & Company L.L.C. 5,548,750 Xxxxxxxxxx Securities, Inc. $ 43,500,000 1,725,000 X.X. Xxxxxx Securities LLC $ 43,500,000 SMBC Nikko Securities America& Company, Inc. $ 43,500,000 Xxxxxxx Xxxxx & Co. LLC $ 22,500,000 Xxxxxx Xxxxxxx & Co. LLC $ 22,500,000 RBC Capital Markets1,150,000 Global Hunter Securities, LLC $ 22,500,000 Citigroup Global Markets Inc. $ 12,000,000 HSBC Securities (USA) Inc. $ 12,000,000 Mizuho Securities USA LLC $ 12,000,000 MUFG Securities Americas Inc. $ 12,000,000 Truist 1,150,000 Northland Securities, Inc. $ 12,000,000 Xxxxx Fargo Securities1,150,000 Brean Capital, LLC $ 12,000,000 Xxxxx575,000 GVC Capital LLC 201,250 TOTAL 11,500,000 SCHEDULE B Schedule of Free Writing Prospectuses included in the Time of Sale Prospectus Free Writing Prospectus dated June 13, Xxxxxxxx 2013 SCHEDULE Information None. EXHIBIT A FORM OF OPINION OF XXXX & XxxxxXXXX, Inc. $ 6,000,000 Xxxxxxxxxxx & Co. Inc. $ 6,000,000 X. Xxxxx Securities, Inc. $ 3,000,000 Xxxxx Group, LLC $ 3,000,000 ICBC Standard Bank Plc $ 3,000,000 Citizens JMP Securities, LLC $ 3,000,000 Ladenburg Xxxxxxxx & Co. Inc. $ 3,000,000 Xxxxxxx Xxxxx & Associates, Inc. $ 3,000,000 Total $ 300,000,000LLC