Employment Agreement dated July 16, 2006 (Harrison)



 Exhibit 10.4 
 EMPLOYMENT AGREEMENT 
 THIS AGREEMENT is made effective August 8, 2006 (the
“Effective Date”), between Bronco Drilling Company, Inc., a Delaware corporation (the “Company”), and Frank Harrison, an individual (the “Executive”). 
 W I T N E S S E T H: 
 WHEREAS, the Company
and the Executive desire to set forth the terms of their agreements relating to the employment of the Executive by the Company. 
 NOW,
THEREFORE, in consideration of the mutual promises herein contained, the Company and the Executive agree as follows: 
 1. Employment.
The Company hereby employs the Executive and the Executive hereby accepts such employment subject to the terms and conditions contained in this Agreement. The Executive is engaged as an employee of the Company and the Executive and the Company do
not intend to create a joint venture, partnership or other relationship that might impose a fiduciary obligation on the Executive or the Company in the performance of this Agreement, other than as an officer and director of the Company. 

2. Executive’s Duties. The Executive is employed on a full-time basis. Throughout the term of this Agreement, the Executive will use the
Executive’s best efforts and due diligence to assist the Company in the objective of achieving the most profitable operation of the Company and the Company’s affiliated entities consistent with developing and maintaining a quality business
operation. 
 2.1 Specific Duties. During the term of this Agreement the Executive: (a) will serve as Chief
Executive Officer for the Company; (b) will be nominated for election or appointed to serve as a director of the Company; (c) will be appointed as an officer or manager of such of the Company’s subsidiaries as the Executive requests;
and (d) will be nominated for election or appointed to serve as a director of such of the Company’s subsidiaries as the Executive requests. The Executive agrees to use the Executive’s best efforts to perform all of the services
required to fully and faithfully execute the offices and positions to which the Executive is appointed and elected and such other services as may be reasonably directed by the Board of Directors of the Company in accordance with this Agreement.

 2.2 Modifications. The precise duties to be performed by the Executive may be extended or curtailed in the
discretion of the Board of Directors of the Company. However, except for termination for Cause (as hereinafter defined) under paragraph 6.1(b) of this Agreement, (i) a reduction in Executive’s Base Salary (as hereinafter defined) or a
significant reduction in Executive’s then current benefits as provided in paragraph 4, (ii) the Company’s principal executive officers are moved to a location more than 25 miles from its current location or Executive is required
to be based anywhere other than the Company’s principal executive offices, or (iii) a failure by the Company to require any successor to the Company or to all or substantially all of the business or assets of the Company to expressly
assume the obligations of the Company under this 








 
Agreement or (iv) a breach by the Company of a material provision of this Agreement or any other material plan or program covering Executive will
constitute termination without Cause (such events, collectively, “Good Reason”). 
 2.3 Rules and
Regulations. From time to time, the Company may issue policies and procedures applicable to employees and the Executive including an Employment Policies Manual. The Executive agrees to comply with such policies and procedures, except to the
extent such policies are inconsistent with this Agreement. Such policies and procedures may be supplemented, modified, changed or adopted without notice in the sole discretion of the Company at any time. In the event of a conflict between such
policies and procedures and this Agreement, this Agreement will control unless compliance with this Agreement will violate any law or regulation applicable to the Company or its affiliated entities. 
 3. Other Activities. During the term of this Agreement, Executive will devote substantially all of his business time, efforts, skills and
abilities and attention to the business of the Company; provided, however, that Executive (i) may serve on one board of directors of a publicly traded corporation, (ii) with the consent of the Board of Directors of the Company (which will
not be unreasonably withheld), may serve on other boards of directors of business entities, (iii) may engage in charitable, educational or community affairs, including serving on the board of directors of any charitable, educational or
community organization and (iv) may manage his personal investments, provided that such activities do not materially interfere with the performance of his duties hereunder. 
 4. Executive’s Compensation. The Company agrees to compensate the Executive as follows: 
 4.1 Base Salary. A base salary (the “Base Salary”), in an annual rate of not less than Four Hundred
Fifty Thousand Dollars ($450,000.00), will be paid to the Executive in installments consistent with the Company’s customary payroll practices, during the term of this Agreement. 
 4.2 Bonus. During the term of this Agreement, the Executive will be eligible to receive an annual bonus established by the Board of
Directors of the Company (or its Compensation Committee), in an amount of not less than 66.7% of the Base Salary. 
 4.3
Equity Compensation. In addition to the compensation set forth in paragraphs 4.1 and 4.2 of this Agreement, the Executive may periodically receive grants of stock options, restricted stock or other equity related awards from the
Company’s stock compensation plans in effect from time to time, subject to the terms and conditions of such plans. 
 4.4 Benefits. The Company agrees to extend to the Executive retirement benefits, deferred compensation, reimbursement of reasonable expenditures for dues, travel and entertainment and any other benefits the Company provides to
other executives or officers from time to time on the same terms as such benefits are provided to such individuals. Such benefits will include comprehensive healthcare, dental care, life 

  

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insurance, disability and other welfare benefits that are not less favorable than the plans in force on the Effective Date. The following specific benefits
will also be provided to the Executive at the expense of the Company. 
 (a) Vacation. The Executive will
be entitled to take up to five (5) weeks of paid vacation each calendar year during the term of this Agreement, subject to proration for any portion of a calendar year under this Agreement. No additional compensation will be paid for failure to
take vacation and no vacation may be carried forward from one calendar year to another. 
 (b) Membership
Dues. The Company will reimburse the Executive for joining, and maintaining a full membership in, any country club in the Oklahoma City area. 
 (c) Reimbursement of Expenses. The Company will reimburse the Executive for such reasonable and necessary out-of-pocket business
expenses as may be incurred by him or her in the performance of the Executive’s duties hereunder. 
 (d) Supplemental
Retirement Plan. The Executive will be eligible to participate in the Company’s supplemental retirement plan, if any, on terms no less favorable than those available to other senior executives. 
 (e) Tax Withholding. The Company has the right to deduct from any compensation payable to Executive under this Agreement social
security (FICA) taxes and all Federal, state and local income taxes and charges as are required by applicable law and regulations. 
 4.5 Gross-Up Payment. In the event it is determined that any payment or distribution by the Company or the Company’s subsidiaries or affiliates to or for the benefit of the Executive (whether paid or payable or distributed or
distributable pursuant to the terms of this Agreement or otherwise, but determined without regard to any additional payments required under this paragraph 4.5) (a “Payment”) is subject to the excise tax imposed by
Section 4999 of the Internal Revenue Code (the “Code”) or any interest or penalties related to such excise tax (collectively, the “Excise Tax”), the Executive will be entitled to receive an
additional payment (a “Gross-Up Payment”) from the Company. The Gross-Up Payment will be equal to the amount such that after payment by the Executive of all taxes (including the Excise Tax, income taxes, interest and
penalties imposed with respect to such taxes) on the Gross-Up Payment, the Executive will retain an amount of the Gross-Up Payment equal to the Excise Tax imposed on the Payment. 
 (a) Determination. Subject to the provisions of paragraph 4.5(b), all determinations required to be made under this paragraph 4.5
(including whether and when a Gross-Up Payment is required, the amount of such Gross-Up Payment and the assumptions to be utilized) will be made by a nationally recognized certified public accounting firm designated by the Executive (the
“Accounting 

  

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Firm”). The Executive will request that the Accounting Firm provide detailed supporting calculations both to the Company and the Executive
within fifteen (15) business days of the receipt of notice from the Executive that there has been a Payment, or such earlier time as is reasonably requested by the parties. In the event that the Accounting Firm is serving as accountant or
auditor for the individual, entity or group effecting a Change of Control (as hereinafter defined), the Executive will be entitled to appoint another nationally recognized accounting firm to make the determinations required under this paragraph
(which accounting firm will then be referred to as the Accounting Firm hereunder). All fees and expenses of the Accounting Firm will be paid by the Company. Any Gross-Up Payment required to be paid under this paragraph 4.5 will be paid by the
Company to the Executive within five (5) days of the receipt of the Accounting Firm’s determination. Any determination by the Accounting Firm will be binding on the Company and the Executive. As a result of the uncertainty in the
application of Section 4999 of the Code at the time of the initial determination by the Accounting Firm, the Gross-Up Payment made by the Company may be less than actually required (an “Underpayment”) consistent with the
calculations required to be made hereunder. In the event that the Company exhausts its remedies pursuant to paragraph 4.5(b) below and the Executive thereafter is required to make a payment of any Excise Tax, the Accounting Firm will determine the
amount of the Underpayment that has occurred and any such Underpayment will be promptly paid by the Company to or for the benefit of the Executive. 
 (b) Contest of Claims. The Executive will notify the Company in writing of any claim by the Internal Revenue Service that, if successful, would require the payment by the Company of a Gross-Up Payment. Such
notification will be given as soon as practicable but no later than ten (10) business days after the Executive is informed in writing of such claim and will apprise the Company of the nature of such claim and the date on which such claim is
requested to be paid. The Executive will not pay such claim prior to the expiration of the thirty (30)-day period following the date on which the Executive notifies the Company (or such shorter period ending on the date that any payment of taxes
with respect to such claim is due). If the Company notifies the Executive in writing prior to the expiration of such thirty (30)-day period that the Company desires to contest such claim, the Executive will: (i) provide to the Company any
information reasonably requested by the Company relating to such claim; (ii) take such action in connection with contesting such claim as the Company reasonably requests in writing including, without limitation, accepting legal representation
with respect to such claim by an attorney reasonably selected by the Company; (c) cooperate with the Company in good faith as necessary to effectively contest such claim; and (d) permit the Company to participate in any proceedings
relating to such claim. The Company will bear and pay directly all costs and expenses (including additional interest and penalties) incurred in connection with the contest of the claim and agrees to indemnify and hold the Executive harmless, on an
after-tax basis, for any Excise Tax or income tax (including interest and penalties with respect thereto) imposed as a result of such contest (including payment of costs 

  

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and expenses as provided hereunder). Without limitation on the foregoing provisions, the Company will control all proceedings related to such contested
claim, may at its sole option pursue or forego any and all administrative appeals, proceedings, hearings and conferences with the taxing authority in respect of such claim and may at its sole option either direct the Executive to pay the tax claimed
and sue for a refund, or contest the claim in any permissible manner. The Executive agrees to prosecute such contest to a determination before any administrative tribunal, in a court of initial jurisdiction and in one or more appellate courts, as
the Company reasonably determines. If the Company directs the Executive to pay a claim and sue for a refund, the Company will be required to advance the amount of such payment to the Executive on an interest-free basis and agrees to indemnify and
hold the Executive harmless, on an after-tax basis, from any Excise Tax or income tax (including interest or penalties with respect thereto) imposed with respect to such advance or with respect to any imputed income with respect to such advance,
provided that any extension of the statute of limitations relating to payment of taxes for the taxable year of the Executive with respect to which such contested amount is claimed to be due is limited solely to such contested amount. Furthermore,
the Company’s control of the contested claim will be limited to issues with respect to which a Gross-Up Payment would be payable hereunder and the Executive will be entitled to settle or contest, as the case may be, any other issue raised by
the Internal Revenue Service or any other taxing authority. 
 (c) Refunds. If, after the receipt by the Executive of
an amount advanced by the Company pursuant to paragraph 4.5(b), the Executive becomes entitled to receive any refund with respect to such claim, the Executive will (subject to the Company’s complying with the requirements of paragraph 4.5(b))
promptly pay to the Company the amount of such refund (together with any interest paid or credited thereon after taxes applicable thereto). If, after the receipt by the Executive of an amount advanced by the Company pursuant to paragraph 4.5(b), a
determination is made that the Executive will not be entitled to any refund with respect to such claim and the Company does not notify the Executive in writing of its intent to contest such denial of refund prior to the expiration of thirty
(30) days after such determination, then the advance will be forgiven and will not be required to be repaid and the amount of such advance will offset, to the extent thereof, the amount of Gross-Up Payment required to be paid. 
 4.6 Compensation Review. The compensation of the Executive will be reviewed not less frequently than annually by the Board of
Directors of the Company (or a Compensation Committee thereof) and shall be reviewed semi-annually if the compensation of other executive officers of the Company is reviewed at such frequency. The compensation of the Executive prescribed in
paragraph 4 of this Agreement (including benefits) may be increased at the discretion of the Board of Directors of the Company or the Compensation Committee, but may not be reduced without the prior written consent of the Executive except as
expressly provided herein. 
  

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 5. Term. In the absence of termination as set forth in paragraph 6 below, this Agreement will
extend for a term commencing on the Effective Date, and ending on August 8, 2009 (the “Expiration Date”) as extended from time to time. Unless the Company provides thirty (30) days’ prior written notice of
non-extension to the Executive on or before each August 8 during the term of this Agreement, the term and the Expiration Date will be automatically extended for one (1) additional year so that the remaining term on this Agreement will be
not less than two (2) and not more than three (3) years. 
 6. Termination. The Executive’s employment will
continue in effect until the expiration of the term set forth in paragraph 5 of this Agreement unless earlier terminated pursuant to this paragraph 6. 
 6.1 Termination by the Company. The Company will have the following rights to terminate Executive’s employment: 
 (a) Termination without Cause. The Company may terminate Executive’s employment without Cause at any time by the service of
written notice of termination to the Executive specifying an effective date of such termination not sooner than ten (10) days after the date of such notice (the “Termination Date”). In the event the Executive is
terminated without Cause (other than in connection with a Change of Control or a Potential Change of Control under paragraph 6.3 of this Agreement), the Executive will receive as termination compensation: (i) an amount equal to his Base Salary
(as in effect on the Termination Date) during the remaining term of this Agreement, but in any event through the Expiration Date; provided, however, such amount shall not be less than two times the then current Base Salary; plus (ii) the
greater of any target bonus for the year of termination or the average of the immediately preceding two years’ annual incentive bonuses received by Executive; plus (iii) any vacation pay accrued through the Termination Date. In addition,
during the greater of (i) twenty-four month period following the date of termination and (ii) the number of months, including fractional months, remaining in the term of this Agreement, the Company will continue to provide Executive (and,
as applicable, his family) with the benefits, including but not limited to healthcare, dental, life insurance and other benefits set forth in paragraph 4.4. The payment of such amounts shall be made, at Executive’s option, either in a lump sum
within ten (10) days of termination or during the remaining term of the Agreement in installments consistent with the Company’s normal payroll practices, but, if on the Termination Date, the Executive is a “specified employee” as
defined in regulations under Section 409A of the Code, such payments will commence on the first payroll payment date which is more than six months following the Termination Date, and the first payment shall include any amounts that would have
otherwise been payable during the six-month period. 
 (b) Termination for Cause. The Company may terminate
Executive’s employment for Cause. For purposes of this Agreement, “Cause” means: (i) the willful and continued failure of the Executive to perform substantially the Executive’s duties with the Company or its
subsidiaries or 

  

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affiliates (other than a failure resulting from incapacity due to physical or mental illness), after a written demand for substantial performance is
delivered to the Executive by the Board of Directors which specifically identifies the manner in which the Board of Directors believes that the Executive has not substantially performed the Executive’s duties; or (ii) the willful engaging
by the Executive in illegal conduct, gross misconduct or a clearly established violation of the Company’s written policies and procedures, in each case which is materially and demonstrably injurious to the Company. For purposes of this
provision, an act or failure to act, on the part of the Executive, will not be considered “willful” unless it is done, or omitted to be done, by the Executive in bad faith or without reasonable belief that the Executive’s action or
omission was in the best interests of the Company. Any act, or failure to act, based on authority given pursuant to a resolution duly adopted by the Board of Directors or based on the advice of counsel for the Company will be conclusively presumed
to be done, or omitted to be done, by the Executive in good faith and in the best interests of the Company. In the event Executive’s employment is terminated for Cause, the Company will not have any obligation to provide any further payments or
benefits to the Executive after the effective date of such termination. Executive’s employment will not be deemed to have been terminated for Cause unless a written determination specifying the reasons for such termination is made, approved by
a majority of the independent and disinterested members of the Board of Directors of the Company and delivered to the Executive. Thereafter, the Executive will have the right for a period of thirty (30) days to request a Board of Directors
meeting to be held at a mutually agreeable time and location to be attended by the members of the Board of Directors in person within the following thirty (30) days, at which meeting the Executive and his designated representatives will have an
opportunity to be heard. Failing such determination and opportunity for hearing, any termination of Executive’s employment will be deemed to have occurred without Cause. 
 6.2 Termination by Executive. The Executive may voluntarily terminate his employment with or without Cause by the service of
written notice of such termination to the Company specifying an effective date of such termination ninety (90) days after the date of such notice, during which time the Executive may use remaining accrued vacation days, or at the Company’s
option, be paid for such days. Subject to paragraphs 2.2 and 6.1, in the event his employment is terminated by the Executive, neither the Company nor the Executive will have any further obligations hereunder, except for any obligations which
expressly survive termination of employment including, without limitation, any obligation of the Company to provide any further payments or benefits to the Executive after the effective date of such termination. 
 6.3 Termination in Connection with Change of Control or Potential Change of Control. If (x) within two (2) years
following a “Change of Control” or (y) following a “Potential Change of Control” which is followed within one (1) year by a Change of Control, there is a CC Termination (as hereinafter
defined), then the Executive will be entitled to a severance payment (in addition to any other rights and other amounts payable to the Executive under Section 6.7 or under Company plans in which Executive 

  

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is a participant) payable in a lump sum in cash within ten (10) days following the CC Termination in an amount equal to the sum of the following:
(i) three (3) times the Executive’s Base Salary for the last 12 calendar months ending immediately prior to the CC Termination and bonus paid pursuant to Section 4.2 (based on the average of the last three years’ annual
bonuses or such lesser number of years as Executive may have been employed); plus (ii) any applicable Gross-Up Payment. If the foregoing amount is not paid within ten (10) days after the CC Termination, the unpaid amount will bear interest
at the per annum rate of 12%. Notwithstanding the foregoing, if at the time of a CC Termination the Executive is a “specified employee” as defined in regulations under Section 409A of the Code, such payment will be made on the first
day which is more than six (6) months following the CC Termination. In connection with any Potential Change of Control or Change of Control, the Company shall obtain the assumption of this Agreement, without limitation or reduction, by any
successor to the Company or any parent corporation of the Company. 
 (a) Change of Control. For the purpose of this
Agreement, a “Change of Control” means the occurrence of any of the following: 
 (i) The acquisition
by any individual, entity or group (within the meaning of Section 13(d)(3) or 14(d)(2) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) (a “Person”), other than Executive
or his affiliates or Wexford Capital LLC or its affiliates (the “Exempt Persons”), of beneficial ownership (within the meaning of Rule 13d-3 promulgated under the Exchange Act) of 40% or more of either (a) the then
outstanding shares of common stock of the Company (the “Outstanding Company Common Stock”) or (b) the combined voting power of the then outstanding voting securities of the Company entitled to vote generally in the
election of directors (the “Outstanding Company Voting Securities”). For purposes of this paragraph (i), any acquisition by any employee benefit plan (or related trust) sponsored or maintained by the Company or any
corporation controlled by the Company will not constitute a Change in Control. 
 (ii) The individuals who, as of the date
hereof, constitute the Board of Directors (the “Incumbent Board”) cease for any reason to constitute at least a majority of the Board of Directors. Any individual becoming a director subsequent to the date hereof whose
election, or nomination for election by the Company’s stockholders, is approved by a vote of at least a majority of the directors then comprising the Incumbent Board will be considered a member of the Incumbent Board as of the date hereof, but
any such individual whose initial assumption of office occurs as a result of an actual or threatened election contest with respect to the election or removal of directors or other actual or threatened solicitation of proxies or consents by or on
behalf of a Person other than the Incumbent Board will not be deemed a member of the Incumbent Board as of the date hereof. 
  

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 (iii) The consummation of a reorganization, merger, consolidation or sale or other
disposition of all or substantially all of the assets of the Company (a “Business Combination”), unless following such Business Combination: (a) the individuals and entities who were the beneficial owners, respectively,
of the Outstanding Company Common Stock and Outstanding Company Voting Securities immediately prior to such Business Combination beneficially own, directly or indirectly, more than 60% of, respectively, the then outstanding shares of common stock
and the combined voting power of the then outstanding voting securities entitled to vote generally in the election of directors, as the case may be, of the corporation resulting from such Business Combination (including, without limitation, a
corporation which, as a result of such transaction, owns the Company or all or substantially all of the Company’s assets either directly or through one ore more subsidiaries) in substantially the same proportions as their ownership, immediately
prior to such Business Combination of the Outstanding Company Common Stock and Outstanding Company Voting Securities, as the case may be; (b) no Person (excluding any corporation resulting from such Business Combination or any employee benefit
plan (or related trust) of the Company or such corporation resulting from such Business Combination) other than one or more of the Exempt Persons beneficially owns, directly or indirectly, 40% or more of, respectively, the then outstanding shares of
common stock of the corporation resulting from such Business Combination or the combined voting power of the then outstanding voting securities of such corporation except to the extent that such ownership existed prior to the Business Combination
and (c) at least a majority of the members of the board of directors of the corporation resulting from such Business Combination were members of the Incumbent Board at the time of the execution of the initial agreement, or of the action of the
Board, providing for such Business Combination. 
 (iv) The approval by the stockholders of the Company of a complete
liquidation or dissolution of the Company. 
 (b) Potential Change of Control. For the purpose of the Agreement, a
“Potential Change of Control” means the earliest to occur of the following events: (i) the Company enters into an agreement the consummation of which, or the approval by stockholders of which, would constitute a Change
of Control; (ii) proxies for the election of members of the Board are solicited by any Person other than the Company; (iii) any Person publicly announces an intention to take or to consider taking actions which, if consummated, would
constitute a Change of Control; or (iv) any other event occurs which is deemed to be a Potential Change of Control by the Board and the Board adopts a resolution to the effect that a Potential Change of Control has occurred. 
 (c) CC Termination. The term “CC Termination” means any of the following: (i) the Executive’s
employment is terminated by the Company other 

  

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than under paragraphs 6.1(b), 6.4 or 6.5; or (ii) the Executive resigns as a result of any of the events constituting Good Reason as defined in
paragraph 2.2. 
 6.4 Disability of Executive. (a) The employment of Executive will terminate upon the
Disability of Executive. For purposes of this Agreement, “Disability” means Executive’s inability to perform his duties and responsibilities as contemplated under this Agreement for a period of more than 120 consecutive days due to
physical, mental or emotional incapacity or impairment. A determination of Disability will be made by a physician acceptable to both Executive and the Company; provided that if Executive and the Company cannot agree as to a physician, each will
select a physician and the two physicians will select a third physician, whose determination as to Disability will be binding on Executive and the Company. Executive, his legal representative or any adult member of his immediate family will have the
right to present to the Company and such physician such information and arguments on his behalf as Executive or they deem appropriate, including the opinion of his personal physician. Executive’s employment will not be terminated due to
Disability until the physician has delivered a written opinion certifying such disability and a written notice of termination for Disability has been delivered by the Company or Executive, as the case may be, to the other party. 
 (b) In the event Executive’s employment is terminated for Disability, the Company will pay Executive his Base Salary in effect on the
date of termination through the remaining term of this Agreement, but in any event through the Expiration Date. The payment of such amounts shall be made during the remaining term of the Agreement in installments consistent with the Company’s
normal payroll practices, but, if on the termination date, the Executive is a “specified employee” as defined in regulations under Section 409A of the Code, such payments will commence on the first payroll payment date which is more
than six months following the termination date and the first payment shall include any amounts that would have otherwise been payable during the six-month period. Notwithstanding the foregoing, the amount payable hereunder will be reduced by any
benefits payable under any disability plans provided by the Company under paragraph 4.4 of this Agreement. 
 6.5
Death of Executive. If Executive dies during the term of this Agreement, Executive’s employment will terminate without compensation to the Executive’s estate, except: (a) the obligation to continue the Base Salary payments
under paragraph 4.1 of this Agreement for twelve (12) months after the effective date of such termination, and (b) the benefits described in paragraph 4.4 of this Agreement accrued through the effective date of such termination.

 6.6 Effect of Termination. The termination of Executive’s employment will terminate all obligations of
the Executive to render services on behalf of the Company. Executive will maintain the confidentiality of all information acquired by the Executive during the term of his employment in accordance with paragraph 7 of this Agreement. In the event of
Executive’s termination of employment, and in addition to any other payments or benefits owed to Executive under this paragraph 6, the Company will pay Executive, his estate or his representative, as the case may be, any accrued but unpaid
salary, bonuses, expenses or benefits as of the date of termination. Except as provided in 

  

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the previous sentence, no accrued bonus, severance pay or other form of compensation will be payable by the Company to the Executive by reason of the
termination of his employment. In the event that payments are required to be made by the Company under this paragraph 6, the Executive will not be required to seek other employment as a means of mitigating the Company’s obligations hereunder
resulting from termination of the Executive’s employment and the Company’s obligations hereunder (including payment of severance benefits) will not be terminated, reduced or modified as a result of the Executive’s earnings from other
employment or self-employment. All keys, entry cards, credit cards, files, records, financial information, furniture, furnishings, equipment, supplies and other items relating to the Company will remain the property of the Company. All such personal
items will be removed from such offices no later than ten (10) days after the effective date of termination, and the Company is hereby authorized to discard any items remaining and to reassign the Executive’s office space after such date.
Prior to the effective date of termination, the Executive will cooperate with the Company to provide for the orderly termination of the Executive’s employment. 
 6.7 Equity Compensation Provisions. Notwithstanding any provision to the contrary in any option agreement, restricted stock
agreement, plan or other agreement relating to equity based compensation, in the event of a termination under paragraph 6.1(a) (which includes any termination by Executive for Good Reason) or 6.3 of this Agreement: (a) all units, stock options,
incentive stock options, performance shares, stock appreciation rights and restricted stock held by Executive immediately prior to such termination will immediately become 100% vested; and (b) the Executive’s right to exercise any
previously unexercised options will not terminate until the latest date on which such option would expire but for Executive’s termination of employment. To the extent the Company is unable to provide for one or both of the foregoing rights, the
Company will provide, in lieu thereof, a lump-sum cash payment equal to the difference between the total value of such units, stock options, incentive stock options, performance shares, stock appreciation rights and shares of restricted stock (the
“Equity Compensation Rights”) with the foregoing rights as of the date of Executive’s termination of employment and the total value of the Equity Compensation Rights without the foregoing rights as of the date of the
Executive’s termination of employment. The foregoing amounts will be determined by the Board of Directors in good faith based on a valuation performed by an independent consultant selected by the Board of Directors and the cash payment, if any,
will be paid in a lump sum in the case of a termination under Section 6.1(a), at the same time as the first severance payment is otherwise due under such Section, and in the case of a termination under Section 6.3, at the same time the
payment is due under such Section. 
 6.8 Payment in Lieu of Benefits. In the event that Executive and/or
his family is entitled to benefits, such as healthcare, under this paragraph 6, to the extent that the Company’s plans, programs and arrangements do not permit a continuation of Executive’s and/or his family’s participation in a
benefit plan, program or arrangement following his termination of employment, the Company will pay Executive (and/or his family), no less frequently than quarterly in advance an amount which, after all taxes on such amount, is sufficient for him
and/or his family to purchase equivalent benefits. 
  

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 6.9 Release. As a condition of receiving any amounts pursuant to
paragraph 6, or of accelerated vesting of any equity-based or cash-based award in connection with the termination of Executive’s employment, Executive agrees to execute a release of claims that he has or may have against the Company relating
to, or arising out of his employment (including the termination of such employment) with the Company; provided, however, Executive will not release: 
 (i) claims that Executive may have against the Company for reimbursement of ordinary and necessary business expenses incurred by him during the course of his employment; 
 (ii) claims that arise after the effective date of the release; 
 (iii) any rights Executive may have to enforce this Agreement; 
 (iv) any rights or entitlements that Executive has under any applicable plan, policy, program, or arrangement of, or other agreement with,
the Company; and 
 (v) claims for which Executive is entitled to be indemnified under the Company’s Certificate of
Incorporation or By-laws or under applicable law or pursuant to the Company’s directors’ and officer’s liability insurance policies. 
 7. Confidentiality. The Executive recognizes that the nature of the Executive’s services are such that the Executive will have access to information that constitutes trade secrets, is of a confidential nature, is of great
value to the Company or is the foundation on which the business of the Company is predicated (“Confidential Information”). The Executive agrees not to disclose to any person other than the Company’s employees or the
Company’s legal counsel or other parties authorized by the Company to receive confidential information nor use for any purpose, other than the performance of this Agreement, any Confidential Information. Confidential Information includes data
or material (regardless of form) which is: (a) a trade secret; (b) provided, disclosed or delivered to Executive by the Company, any officer, director, employee, agent, attorney, accountant, consultant or other person or entity employee by
the Company in any capacity, any customer, borrower or business associate of the Company or any public authority having jurisdiction over the Company of any business activity conducted by the Company; or (c) produced, developed, obtained or
prepared by or on behalf of the Executive or the Company (whether or not such information was developed in the performance of this Agreement) with respect to the Company or any assets, business activities, officers, directors, employees, borrowers
or customers of the foregoing. However, Confidential Information will not include any information, data or material which at the time of disclosure or use was generally available to the public other than by a breach of this Agreement, was available
to the party to whom disclosed on a non-confidential basis by disclosure or access provided by the Company or a third party, or was otherwise developed or obtained independently by the person to whom disclosed without a breach of this Agreement. On
request by the Company, the Company will be entitled to a copy of any Confidential Information in the possession of the Executive. The provisions of this paragraph 7 will survive the termination, expiration or cancellation of 

  

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Executive’s employment for a period of one (1) year after the date of termination. The Executive will deliver to the Company all originals and
copies of the documents or materials containing Confidential Information. For purposes of paragraphs 7, 8 and 9 of this Agreement, the Company expressly includes any of the Company’s subsidiaries or affiliates. 
 8. Non-competition. During the period of Executive’s employment and for a period ending six (6) months after the Executive’s
termination of employment for any reason other than pursuant to Section 6.1(a) or 6.3, (a) the Executive will not solicit, induce, entice or attempt to entice any employee, contractor, customer, vendor or subcontractor to terminate or
breach any relationship with the Company or the Company’s subsidiaries or affiliates for the Executive’s own account or for the benefit of another party; and (b) the Executive will not circumvent or attempt to circumvent the foregoing
agreements in clause (a) by any future arrangement or through the actions of a third party. The foregoing will not prohibit the activities which are expressly permitted by paragraph 3 of this Agreement. 
 9. Proprietary Matters. The Executive expressly understands and agrees that any and all improvements, inventions, discoveries, processes or
know-how that are generated or conceived by the Executive during the term of this Agreement, whether generated or conceived during the Executive’s regular working hours or otherwise, will be the sole and exclusive property of the Company.
Whenever requested by the Company (either during the term of this Agreement or thereafter), the Executive will assign or execute any and all applications, assignments and/or other instruments and do all things which the Company deems necessary or
appropriate in order to permit the Company to: (a) assign and convey or otherwise make available to the Company the sole and exclusive right, title and interest in and to said improvements, inventions, discoveries, processes, know-how,
applications, patents, copyrights, trade names or trademarks; or (b) apply for, obtain, maintain, enforce and defend patents, copyrights, trade names or trademarks of the United States or of foreign countries for said improvements, inventions,
discoveries, processes or know-how. However, the improvements, inventions, discoveries, processes or know-how generated or conceived by the Executive and referred to above (except as they may be included in the patents, copyrights or registered
trade names or trademarks of the Company, or corporations, partnerships or other entities which may be affiliated with the Company) will not be exclusive property of the Company at any time after having been disclosed or revealed or have otherwise
become available to the public or to a third party on a non-confidential basis other than by a breach of this Agreement, or after they have been independently developed or discussed without a breach of this Agreement by a third party who has no
obligation to the Company or the Company Entities. 
 10. Arbitration. The parties will attempt to promptly resolve any dispute
or controversy arising out of our relating to this Agreement or termination of the Executive by the Company. Any negotiations pursuant to this paragraph 10 are confidential and will be treated as compromise and settlement negotiations for all
purposes. If the parties are unable to reach a settlement amicably, the dispute will be submitted to binding arbitration before a single arbitrator in accordance with the Employment Dispute Resolution Rules of the American Arbitration Association.
The arbitrator will be instructed and empowered to take reasonable steps to expedite the arbitration and the arbitrator’s judgment will be final and binding upon the parties subject solely to challenge on the grounds of fraud or gross
misconduct. Except for damages arising out of a breach of paragraphs 6, 7, 8 or 9 of this Agreement, the arbitrator is not 

  

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empowered to award total damages (including compensatory damages) that exceed 300% of compensatory damages and each party hereby irrevocably waives any
damages in excess of that amount. The arbitration will be held in Oklahoma County, Oklahoma. Judgment upon any verdict in arbitration may be entered in any court of competent jurisdiction and the parties hereby consent to the jurisdiction of, and
proper venue in, the federal and state courts located in Oklahoma County, Oklahoma. The Company will pay the costs and expenses of the arbitration including, without implied limitation, the fees for the arbitrators. Unless otherwise expressly set
forth in this Agreement, the procedures specified in this paragraph 10 will be the sole and exclusive procedures for the resolution of disputes and controversies between the parties arising out of or relating to this Agreement. Notwithstanding the
foregoing, a party may seek a preliminary injunction or other provisional judicial relief if in such party’s judgment such action is necessary to avoid irreparable damage or to preserve the status quo. 
 11. Miscellaneous. The parties further agree as follows: 
 11.1 Time. Time is of the essence of each provision of this Agreement. 
 11.2 Notices. Any notice, payments, demand or communication required or permitted to be given by any provision of this
Agreement will be in writing and will be deemed to have been given when received by personal delivery, by facsimile, by overnight courier, or be certified mail, postage and charges prepaid, directed to the following address or to such other
additional addresses as any party might designate by written notice to the other party: 
  

			
	To the Company:	  	Bronco Drilling Company, Inc.
		  	16217 N. May Avenue
		  	Edmond, OK 73013
		  	Attn: General Counsel
		
	To the Executive:	  	Frank Harrison
		  	12901 N. Western
		  	Oklahoma City, Ok 73114

 11.3 Assignment. Neither this Agreement nor any of the parties’
rights or obligations hereunder can be transferred or assigned without the prior written consent of the other parties to this Agreement. 
 11.4 Construction. If any provision of this Agreement or the application thereof to any person or circumstances is determined, to any extent, to be invalid or unenforceable, the remainder of this
Agreement, or the application of such provision to persons or circumstances other than those as to which the same is held invalid or unenforceable, will not be affected thereby, and each term and provision of this Agreement will be valid and
enforceable to the fullest extent permitted by law. This 

  

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Agreement is intended to be interpreted, construed and enforced in accordance with the laws of the State of Oklahoma. 
 11.5 Entire Agreement. Except as provided in paragraph 2.3 of this Agreement, this Agreement constitutes the entire agreement
between the parties hereto with respect to the subject matter herein contained, and no modification hereof will be effective unless made by a supplemental written agreement executed by all of the parties hereto. 
 11.6 Binding Effect. This Agreement will be binding on the parties and their respective successors, legal representatives and
permitted assigns. In the event of a merger, consolidation, combination, dissolution or liquidation of the Company, the performance of this Agreement will be assumed by any entity which succeeds to or is transferred the business of the Company as a
result thereof. 
 11.7 Attorneys’ Fees. If any party institutes an action, proceeding or arbitration against any
other party relating to the provisions of this Agreement or any default hereunder, the Company will be responsible for paying the Company’s legal fees and expenses and the Company will be required to reimburse the Executive for reasonable
expenses and legal fees incurred by the Executive in connection with the resolution of such action or proceeding, including any costs of appeal. 
 11.8 Superseding Agreement. This Agreement is the final, complete and exclusive expression of the agreement between the Company and the Executive and supersedes and replaces in all respects any prior oral or
written employment agreements. On execution of this Agreement by the Company and the Executive, the relationship between the Company and the Executive after the effective date of this Agreement will be governed by the terms of this Agreement and not
by any other agreements, oral or otherwise. 
 11.9 Non-Contravention. Executive represents and warrants to the Company
that the execution and performance of this Agreement will not violate, constitute a default under, or otherwise give rights to any third party, pursuant to the terms of any Agreement to which Executive is a party. 
 11.10 Compliance with Section 409A of the Code. This Agreement is intended to comply with Section 409A of the Code and
shall be construed and interpreted in accordance with such intent. To the extent any benefit paid under this Agreement shall be subject to Section 409A of the Code, such benefit shall be paid in a manner that will comply with Section 409A,
including any IRS 409A Guidance. Any provision of this Agreement that would cause the payment of any benefit to fail to satisfy Section 409A of the Code shall have no force and effect until amended to comply with Section 409A (which
amendment may be retroactive to the extent permitted by the IRS 409A Guidance. 
 IN WITNESS WHEREOF, the undersigned have executed this
Agreement effective the date first above written. 
 [SIGNATURES ON FOLLOWING PAGE] 
  

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	 COMPANY:

		
	 By:
	 	 /s/ Zac Graves

	 Name:
	 	 Zac Graves

	 Title:
	 	 CFO

	
	 EXECUTIVE:

		
	 By:
	 	 /s/ Frank Harrison

		 	 Frank Harrison