First Amendment to Standstill and Amendment Agreement, dated as of April 15, 2020, by and among Unit Corporation, Unit Drilling Company, Unit Petroleum Company, the lenders party thereto and BOKF, NA dba Bank of Oklahoma, as administrative agent for the lenders

1.Recitals; Capitalized Terms. The recitals set forth above are incorporated herein with the same force and effect as if set forth at length herein below. The term “Standstill Agreement” as used in this First Amendment (and the term “this Agreement” as set forth within the Existing Standstill Agreement), shall hereafter mean the Existing Standstill Agreement, as amended by this First Amendment. The term “Credit Agreement” as used in this First Amendment (and the term “this Agreement” as set forth within the Existing Credit Agreement), shall hereafter mean the Existing Credit Agreement, as amended by this First Amendment. Unless otherwise expressly defined herein, all capitalized terms used herein shall have the respective meanings ascribed to such terms pursuant to the

Existing Credit Agreement, including, without limitation, and as applicable, pursuant to the Existing Standstill Agreement.

2. Certain Amended and Modified Definitions. The following capitalized terms (as heretofore set forth within the Existing Standstill Agreement), for the purposes of both the Standstill Agreement and the Credit Agreement, shall have the following amended and modified meanings, and Section 1.2 of the Existing Standstill Agreement is hereby amended and modified, accordingly as follows:

“Standstill Agreement” shall mean that certain Standstill and Amendment Agreement dated March 11, 2020 among the Credit Parties, Administrative Agent and the Lenders party thereto, as amended by that certain First Amendment to Standstill and Amendment Agreement dated April 15, 2020 among the Credit Parties, Administrative Agent and the Lenders party thereto (as the same may be amended, modified, replaced, amended and restated and supplemented form time to time).

"Standstill Period" shall mean the period commencing on the Standstill Effective Date and continuing until the earlier of: (i) the receipt by any Credit Party from the Administrative Agent of notice of the occurrence of any Termination Event, and (ii) 3:00 p.m. Central time on April 17, 2020.

3. General Release. IN CONSIDERATION OF, INTER ALIA, THE ADMINISTRATIVE AGENT’S AND THE LENDERS’ AGREEMENTS AND CONSIDERATION AS SET FORTH IN THE STANDSTILL AGREEMENT (AS AMENDED HEREBY), INCLUDING, WITHOUT LIMITATION, ADMINISTRATIVE AGENT’S AND THE LENDERS’ AGREEMENTS TO MODIFY THE CREDIT AGREEMENT (AS AMENDED HEREBY) AS DESCRIBED IN THE STANDSTILL AGREEMENT (AS AMENDED HEREBY), EACH CREDIT PARTY HEREBY, FOR ITSELF AND ITS SUCCESSORS AND ASSIGNS, FULLY AND WITHOUT RESERVE, RELEASES AND FOREVER DISCHARGES EACH OF THE ADMINISTRATIVE AGENT, THE LENDERS, CO-SYNDICATION AGENTS, LC ISSUER, AND EACH OF THEIR RESPECTIVE SUCCESSORS AND ASSIGNS, OFFICERS, DIRECTORS, EMPLOYEES, REPRESENTATIVES, TRUSTEES, ATTORNEYS, AGENTS, ADVISORS (INCLUDING ATTORNEYS, ACCOUNTANTS AND EXPERTS) AND AFFILIATES (COLLECTIVELY THE “RELEASED PARTIES” AND INDIVIDUALLY A “RELEASED PARTY”) FROM ANY AND ALL ACTIONS, CLAIMS, DEMANDS, CAUSES OF ACTION, JUDGMENTS, EXECUTIONS, SUITS, DEBTS, LIABILITIES, COSTS, DAMAGES, EXPENSES OR OTHER OBLIGATIONS OF ANY KIND AND NATURE WHATSOEVER, KNOWN OR UNKNOWN, DIRECT AND/OR INDIRECT, AT LAW OR IN EQUITY, WHETHER NOW EXISTING OR HEREAFTER ASSERTED (INCLUDING, WITHOUT LIMITATION, ANY OFFSETS, REDUCTIONS, REBATEMENT, CLAIMS OF USURY OR CLAIMS WITH RESPECT TO THE NEGLIGENCE OF ANY RELEASED PARTY), FOR OR BECAUSE OF ANY MATTERS OR THINGS OCCURRING, EXISTING OR ACTIONS DONE, OMITTED TO BE DONE, OR SUFFERED TO BE DONE BY ANY OF THE RELEASED PARTIES, IN EACH CASE, ON OR PRIOR TO THE EFFECTIVE DATE OF THIS FIRST AMENDMENT, AND ARE IN ANY WAY DIRECTLY OR INDIRECTLY ARISING OUT OF OR IN ANY WAY CONNECTED TO ANY OF THE STANDSTILL AGREEMENT (AS AMENDED HEREBY), THE CREDIT AGREEMENT (AS

AMENDED HEREBY), ANY OTHER LOAN DOCUMENT OR ANY OF THE TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY (COLLECTIVELY, THE “RELEASED MATTERS”). THE BORROWERS, BY EXECUTION HEREOF, ON BEHALF OF THEMSELVES AND ON BEHALF OF EACH OTHER CREDIT PARTY, EACH HEREBY ACKNOWLEDGES AND AGREES THAT THE AGREEMENTS IN THIS SECTION 3 ARE INTENDED TO COVER AND BE IN FULL SATISFACTION FOR ALL OR ANY ALLEGED INJURIES OR DAMAGES ARISING IN CONNECTION WITH THE RELEASED MATTERS. THE PROVISIONS OF THIS SECTION 3 SHALL SURVIVE THE TERMINATION OF THE STANDSTILL AGREEMENT (AS AMENDED HEREBY), THE CREDIT AGREEMENT (AS AMENDED HEREBY), AND THE OTHER LOAN DOCUMENTS.

4. Miscellaneous:

A. No Waiver. Notwithstanding any of the foregoing, the standstill granted by the Administrative Agent and the Lenders pursuant to the Standstill Agreement (as amended hereby) shall not constitute and shall not be deemed to constitute a waiver or release of (x) any Default, Event of Default, or occurrence of any Material Adverse Event, or (y) any other fact, event or occurrence under the Credit Agreement or any other Loan Document (whether now or hereafter existing, and whether or not now or hereafter known by Administrative Agent or any Lender to be existing). Administrative Agent and the Lenders hereby expressly reserve and preserve all of their respective rights and remedies (whether pursuant to the Credit Agreement or any other Loan Document, the UCC, at law, in equity or otherwise) respecting any and/or all such Defaults, Events of Default and/or other facts, events, occurrences and other matters, subject only to the applicable terms and conditions of the Standstill Agreement (as amended hereby).

B. Conflict; Ratification. To the extent of any conflict or inconsistency between the terms and conditions of this First Amendment, and the terms and conditions of the Existing Standstill Agreement or the terms and conditions of the Existing Credit Agreement, the terms and conditions of this First Amendment shall govern and control. Except to the extent otherwise expressly modified hereby, the terms and conditions of both the Existing Standstill Agreement and the Existing Credit Agreement shall remain unchanged and of full force and effect and are hereby ratified by the undersigned parties.

D. Interpretation; Governing Law. The section headings set forth in this First Amendment are for convenience of reference only, and do not define, limit or construe the contents of such sections. THIS FIRST AMENDMENT SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE LAWS (BUT NOT THE RULES GOVERNING CONFLICTS OF LAWS) OF THE STATE OF OKLAHOMA AND SHALL BE PERFORMABLE IN TULSA COUNTY, OKLAHOMA. The provisions of (i) Article 17 of the Existing Credit Agreement, and (ii) Article 7 of the Existing Standstill Agreement, respectively, shall apply to this First Amendment, mutatis mutandis.

IN WITNESS WHEREOF, the parties hereto have caused this First Amendment to be duly executed by their respective authorized officers as of the day and year first above written.