Document:

Form of Director and Officer Indemnification Agreement

 Exhibit 10.12 
  
 INDEMNIFICATION AGREEMENT 
  
 This Indemnification Agreement (this “Agreement”) dated the          day of
[            ], 2005, by and between Bronco Drilling Company, Inc., a Delaware corporation (the “Company”), and
[                    ], an individual (“Indemnitee”). 
  
 RECITALS 
  
 A. Competent and experienced persons are reluctant to serve or to continue to serve as directors and officers of
corporations or in other capacities unless they are provided with adequate protection through insurance or indemnification (or both) against claims against them arising out of their service and activities on behalf of the corporation. 
  
 B. The current uncertainties relating to the availability of adequate
insurance have increased the difficulty for corporations of attracting and retaining competent and experienced persons to serve in such capacity. 
  
 C. The Board of Directors of the Company (the “Board of Directors”) has determined that the continuation of present trends in
litigation will make it more difficult to attract and retain competent and experienced persons to serve as directors and officers of the Company, that this situation is detrimental to the best interests of the Company’s stockholders and that
the Company should act to assure such persons that there will be increased certainty of adequate protection in the future. 
  
 D. As a supplement to and in the furtherance of the Company’s Amended and Restated certificate of incorporation, as may be amended and
restated from time to time (the “Certificate”), and the Company’s Bylaws, as may be amended and restated from time to time (the “Bylaws”), it is reasonable, prudent, desirable and necessary for
the Company contractually to obligate itself to indemnify, and to pay in advance expenses on behalf of, officers and directors to the fullest extent permitted by law so that they will serve or continue to serve the Company free from concern that
they will not be so indemnified and that their expenses will not be so paid in advance. 
  
 E. This Agreement is not a substitute for, nor does it diminish or abrogate any rights of Indemnitee under, the Certificate and the Bylaws or any resolutions adopted pursuant thereto (including any contractual rights
of Indemnitee that may exist). 
  
 F. Indemnitee is a director and
an officer of the Company and his willingness to continue to serve in such capacity is predicated, in substantial part, upon the Company’s willingness to indemnify him to the fullest extent permitted by the laws of the State of Delaware and
upon the other undertakings set forth in this Agreement. 

 AGREEMENT 
  

NOW, THEREFORE, in consideration of the premises and covenants contained herein, the Company and Indemnitee hereby agree as follows: 

 
 ARTICLE 1 
 CERTAIN DEFINITIONS 
  
 Capitalized terms used but not otherwise defined in this Agreement have the meanings set forth below: 
  
 “Corporate Status” means the status of a person who is or was a director, officer, employee, partner, member, manager, trustee,
fiduciary or agent of the Company or of any other Enterprise which such person is or was serving at the request of the Company. In addition to any service at the actual request of the Company, Indemnitee will be deemed, for purposes of this
Agreement, to be serving or to have served at the request of the Company as a director, officer, employee, partner, member, manager, trustee, fiduciary or agent of another Enterprise if Indemnitee is or was serving as a director, officer, employee,
partner, member, manager, fiduciary, trustee or agent of such Enterprise and (i) such Enterprise is or at the time of such service was a Controlled Affiliate, (ii) such Enterprise is or at the time of such service was an employee benefit plan (or
related trust) sponsored on maintained by the Company or a Controlled Affiliate or (ii) the Company or a Controlled Affiliate directly or indirectly caused Indemnitee to be nominated, elected, appointed, designated, employed, engaged or selected to
serve in such capacity. 
  
 “Controlled
Affiliate” means any corporation, limited liability company, partnership, joint venture, trust or other Enterprise, whether or not for profit, that is directly or indirectly controlled by the Company. For purposes of this
definition, the term “control” means the possession, directly or indirectly, of the power to direct, or cause the direction of, the management or policies of an Enterprise, whether through the ownership of voting securities, through other
voting rights, by contract or otherwise; provided, however, that direct or indirect beneficial ownership of capital stock or other interests in an Enterprise entitling the holder to cast 30% or more of the total number of votes generally
entitled to be cast in the election of directors (or persons performing comparable functions) of such Enterprise will be deemed to constitute “control” for purposes of this definition. 
  
 “Disinterested Director” means a director of the
Company who is not and was not a party to the Proceeding in respect of which indemnification is sought by Indemnitee. 
  
 “Enterprise” means the Company and any other corporation, partnership, limited liability company, joint venture, employee benefit
plan, trust or other entity or other enterprise of which Indemnitee is or was serving at the request of the Company in a Corporate Status. 
  
 “Expenses” means all attorney’s fees, disbursements and retainers, court costs, transcript costs, fees of experts, witness
fees, travel expenses, duplicating costs, printing and binding costs, telephone charges, postage, fax transmission charges, secretarial services, delivery service fees and all other disbursements or expenses paid or incurred in connection with
prosecuting, defending, preparing to prosecute or defend, investigating, being or preparing to be a witness in, or otherwise participating in, a Proceeding, or in connection with seeking indemnification under 

  

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this Agreement. Expenses will also include Expenses paid or incurred in connection with any appeal resulting from any Proceeding, including the premium,
security for and other costs relating to any appeal bond or its equivalent. Expenses, however, will not include amounts paid in settlement by Indemnitee or the amount of judgments or fines against Indemnitee. 
  
 “Independent Counsel” means an attorney or firm of
attorneys that is experienced in matters of corporation law and neither currently is, nor in the past five (5) years has been, retained to represent: (i) the Company or Indemnitee in any matter material to either such party (other than with respect
to matters concerning the Indemnitee under this Agreement and/or the indemnification provisions of the Certificate or Bylaws, or of other indemnitees under similar indemnification agreements), or (ii) any other party to the Proceeding giving rise to
a claim for indemnification hereunder. Notwithstanding the foregoing, the term “Independent Counsel” does not include any person who, under the applicable standards of professional conduct then prevailing, would have a conflict of interest
in representing either the Company or Indemnitee in an action to determine Indemnitee’s rights under this Agreement. 
  
 “Losses” means any loss, liability, judgments, damages, amounts paid in settlement, fines (including excise taxes and penalties
assessed with respect to employee benefit plans), penalties (whether civil, criminal or otherwise) and all interest, assessments and other charges paid or payable in connection with or in respect of any of the foregoing. 
  
 “Proceeding” means any threatened, pending or
completed action, suit, claim, demand, arbitration, alternate dispute resolution mechanism, investigation, inquiry, administrative hearing or any other actual, threatened or completed proceeding, including any and all appeals, whether brought by or
in the right of the Company or otherwise, whether civil, criminal, administrative or investigative, whether formal or informal, and in each case whether or not commenced prior to the date of this Agreement, in which Indemnitee was, is or will be
involved as a party or otherwise, by reason of or relating to Indemnitee’s Corporate Status and by reason of or relating to either (i) any action or alleged action taken by Indemnitee (or failure or alleged failure to act) or of any action or
alleged action (or failure or alleged failure to act) on Indemnitee’s part, while acting in his Corporate Status or (ii) the fact that Indemnitee is or was serving at the request of the Company as director, officer, employee, partner, member,
manager, trustee, fiduciary or agent of another Enterprise, in each case whether or not serving in such capacity at the time any Loss or Expense is paid or incurred for which indemnification or advancement of Expenses can be provided under this
Agreement, except one initiated by Indemnitee to enforce his rights under this Agreement. For purposes of this definition, the term “threatened” will be deemed to include Indemnitee’s good faith belief that a claim or other assertion
may lead to institution of a Proceeding. 
  
 References to
“serving at the request of the Company” include any service as a director, officer, employee or agent of the Company which imposes duties on, or involves services by, such director, officer, employee or agent with respect to
any employee benefit plan, its participants or beneficiaries; and a person who acted in good faith and in a manner he or she reasonably believed to be in the best interests of the participants and beneficiaries of an employee benefit plan will be
deemed to have acted in a manner “not opposed to the best interests of the Company” as referred to under applicable law or in this Agreement. 
  

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 ARTICLE 2 
 SERVICES TO THE COMPANY 
  
 2.1 Services to the Company. Indemnitee agrees to serve as a director and an officer of the Company. Indemnitee may at any time and for any reason resign from such position (subject to any other contractual obligation or any
obligation imposed by operation of law), in which event the Company will have no obligation under this Agreement to continue Indemnitee in such position. This Agreement will not be construed as giving Indemnitee any right to be retained in the
employ of the Company (or any other Enterprise). 
  
 ARTICLE 3

 INDEMNIFICATION 
  
 3.1 Company Indemnification. Except as otherwise provided in this Article 3, if Indemnitee was, is or becomes a party to, or was or
is threatened to be made a party to, or was or is otherwise involved in, any Proceeding, the Company will indemnify and hold harmless Indemnitee to the fullest extent permitted by the Certificate, Bylaws and applicable law, as the same exists or may
hereafter be amended, restated, interpreted or replaced (but in the case of any such amendment, restatement, interpretation or replacement, only to the extent that such amendment, restatement, interpretation or replacement permits the Company to
provide broader indemnification rights than were permitted prior thereto), against any and all Expenses and Losses, and any federal, state, local or foreign taxes imposed as a result of the actual or deemed receipt of any payments under this
Agreement, that are actually and reasonably paid or incurred by Indemnitee in connection with such Proceeding. For purposes of this Agreement, the meaning of the phrase “to the fullest extent permitted by law” will include to
the fullest extent permitted by Section 145 of the Delaware General Corporation Law (“DGCL”) or any section that replaces or succeeds Section 145 of the DGCL with respect to such matters. 
  
 3.2 Mandatory Indemnification if Indemnitee is Wholly or Partly
Successful. Notwithstanding any other provision of this Agreement (other than Section 6.9), to the extent that Indemnitee has been successful, on the merits or otherwise, in defense of any Proceeding or any part thereof, the Company will
indemnify Indemnitee against all Expenses that are actually and reasonably paid or incurred by Indemnitee in connection therewith. If Indemnitee is not wholly successful in such Proceeding, but is successful, on the merits or otherwise, as to one or
more but fewer than all claims, issues or matters in such Proceeding, the Company will indemnify and hold harmless Indemnitee against all Expenses paid or incurred by Indemnitee in connection with each successfully resolved claim, issue or matter on
which Indemnitee was successful. For purposes of this Section 3.2, the termination of any Proceeding, or any claim, issue or matter in such Proceeding, by dismissal with or without prejudice will be deemed to be a successful result as to such
Proceeding, claim, issue or matter. 
  
 3.3
Indemnification for Expenses of a Witness. Notwithstanding any other provision of this Agreement, to the extent that Indemnitee is, by reason of his Corporate Status, a witness in any Proceeding to which Indemnitee is not a party, the
Company will indemnify Indemnitee against all Expenses actually and reasonably paid or incurred by Indemnitee on his behalf in connection therewith. 
  

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 3.4 Exclusions. Notwithstanding any other provision of this Agreement, the Company will not
be obligated under this Agreement to provide indemnification in connection with the following: 
  
 (a) Any Proceeding (or part of any Proceeding) initiated or brought voluntarily by Indemnitee against the Company or its directors,
officers, employees or other indemnities, unless the Board of Directors has authorized or consented to the initiation of the Proceeding (or such part of any Proceeding); provided, however, that nothing in this Section 3.4(a) shall
limit the right of Indemnitee to be indemnified under Section 7.4. 
  
 (b) For an accounting of profits made from the purchase and sale (or sale and purchase) by Indemnitee of securities of the Company within the meaning of Section 16(b) of the Exchange Act or any similar successor
statute. 
  
 ARTICLE 4 
 ADVANCEMENT OF EXPENSES 
  
 4.1 Expense Advances. Except as set forth in Section 4.2, the Company will, if requested by Indemnitee, advance, to the fullest
extent permitted by law, to Indemnitee (hereinafter an “Expense Advance”) any and all Expenses actually and reasonably paid or incurred by Indemnitee in connection with any Proceeding (whether prior to or after its final
disposition). Indemnitee’s right to each Expense Advance will not be subject to the satisfaction of any standard of conduct and will be made without regard to Indemnitee’s ultimate entitlement to indemnification under the other provisions
of this Agreement, or under provisions of the Certificate or Bylaws or otherwise. Each Expense Advance will be unsecured and interest free and will be made by the Company without regard to Indemnitee’s ability to repay the Expense Advance;
provided, however, that, if applicable law requires, an Expense Advance will be made only upon delivery to the Company of an undertaking (hereinafter an “Undertaking”), by or on behalf of Indemnitee, to repay such
Expense Advance if it is ultimately determined, by final decision by a court or arbitrator, as applicable, from which there is no further right to appeal, that Indemnitee is not entitled to be indemnified for such Expenses under the Certificate,
Bylaws, the DGCL, this Agreement or otherwise. An Expense eligible for an Expense Advance will include any and all reasonable Expenses incurred pursuing an action to enforce the right of advancement provided for in this Article 4, including
Expenses incurred preparing and forwarding statements to the Company to support the Expense Advances claimed. 
  
 4.2 Exclusions. Indemnitee will not be entitled to any Expense Advance in connection with any of the matters for which indemnity is excluded
pursuant to Section 3.4. 
  
 4.3 Timing. An
Expense Advance pursuant to Section 4.1 will be made within ten days after the receipt by the Company of a written statement or statements from Indemnitee requesting such Expense Advance (which statement or statements will include, if
requested by the Company, reasonable detail underlying the Expenses for which the Expense Advance is requested), whether such request is made prior to or after final disposition of such Proceeding. Such request must be accompanied by or preceded by
the Undertaking, if then required by the DGCL or any other applicable law. 
  

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 ARTICLE 5 
 CONTRIBUTION IN THE EVENT OF JOINT LIABILITY 
  
 5.1 Contribution by Company. To the fullest extent permitted by law, if the indemnification provided for in this Agreement is unavailable to Indemnitee for any reason whatsoever, the Company, in lieu of
indemnifying Indemnitee, will contribute to the amount of Expenses and Losses actually and reasonably incurred or paid by Indemnitee in connection with any Proceeding in proportion to the relative benefits received by the Company and all officers,
directors and employees of the Company other than Indemnitee who are jointly liable with Indemnitee (or would be if joined in such Proceeding), on the one hand, and Indemnitee, on the other hand, from the transaction from which such Proceeding
arose; provided, however, that the proportion determined on the basis of relative benefit may, to the extent necessary to conform to law, be further adjusted by reference to the relative fault of the Company and all officers, directors and
employees of the Company other than Indemnitee who are jointly liable with Indemnitee (or would be if joined in such Proceeding), on the one hand, and Indemnitee, on the other hand, in connection with the events that resulted in such Expenses and
Losses, as well as any other equitable considerations which applicable law may require to be considered. The relative fault of the Company and all officers, directors and employees of the Company other than Indemnitee who are jointly liable with
Indemnitee (or would be if joined in such Proceeding), on the one hand, and Indemnitee, on the other hand, will be determined by reference to, among other things, the degree to which their actions were motivated by intent to gain personal profit or
advantage, the degree to which their liability is primary or secondary, and the degree to which their conduct was active or passive. 
  
 5.2 Indemnification for Contribution Claims by Others. To the fullest extent permitted by law, the Company will fully indemnify and hold
Indemnitee harmless from any claims of contribution which may be brought by other officers, directors or employees of the Company who may be jointly liable with Indemnitee for any Loss or Expense arising from a Proceeding. 
  
 ARTICLE 6 
 PROCEDURES AND PRESUMPTIONS FOR THE 
 DETERMINATION OF ENTITLEMENT TO
INDEMNIFICATION 
  
 6.1 Notification of Claims;
Request for Indemnification. Indemnitee agrees to notify promptly the Company in writing of any claim made against Indemnitee for which indemnification will or could be sought under this Agreement; provided, however, that a delay
in giving such notice will not deprive Indemnitee of any right to be indemnified under this Agreement unless, and then only to the extent that, the Company did not otherwise learn of the Proceeding and such delay is materially prejudicial to the
Company’s ability to defend such Proceeding; and, provided, further, that notice will be deemed to have been given without any action on the part of Indemnitee in the event the Company is a party to the same Proceeding. The omission to
notify the Company will not relieve the Company from any liability for indemnification which it may have to Indemnitee otherwise than under this Agreement. Indemnitee may deliver to the Company a written request to have the Company indemnify and
hold harmless Indemnitee in accordance with this Agreement. Subject to Section 6.9, such request may be delivered from time to time and at such time(s) as Indemnitee deems appropriate 

  

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in his sole discretion. Following such a written request for indemnification, Indemnitee’s entitlement to indemnification shall be determined according
to Section 6.2. The Secretary of the Company will, promptly upon receipt of such a request for indemnification, advise the Board of Directors in writing that Indemnitee has requested indemnification. The Company will be entitled to
participate in any Proceeding at its own expense. 
  
 6.2
Determination of Right to Indemnification. Upon written request by Indemnitee for indemnification pursuant to Section 6.1 hereof with respect to any Proceeding, a determination, if, but only if, required by applicable law,
with respect to Indemnitee’s entitlement thereto will be made by one of the following, at the election of Indemnitee: (1) so long as there are Disinterested Directors with respect to such Proceeding, a majority vote of the Disinterested
Directors, even though less than a quorum of the Board of Directors, (2) so long as there are Disinterested Directors with respect to such Proceeding, a committee of such Disinterested Directors designated by a majority vote of such Disinterested
Directors, even though less than a quorum of the Board of Directors or (3) Independent Counsel in a written opinion delivered to the Board of Directors, a copy of which will also be delivered to Indemnitee. The election by Indemnitee to use a
particular person, persons or entity to make such determination is to be included in the written request for indemnification submitted by Indemnitee (and if no election is made in the request it will be assumed that Indemnitee has elected the
Independent Counsel to make such determination). The person, persons or entity chosen to make a determination under this Agreement of the Indemnitee’s entitlement to indemnification will act reasonably and in good faith in making such
determination. 
  
 6.3 Selection of Independent
Counsel. If the determination of entitlement to indemnification pursuant to Section 6.2 will be made by an Independent Counsel, the Independent Counsel will be selected as provided in this Section 6.3. The Independent
Counsel will be selected by Indemnitee (unless Indemnitee requests that such selection be made by the Board of Directors, in which event the immediately following sentence will apply) and Indemnitee will give written notice to the Company advising
it of the identity of the Independent Counsel so selected. If the Independent Counsel is selected by the Board of Directors, the Company will give written notice to Indemnitee advising him of the identity of the Independent Counsel so selected. In
either event, Indemnitee or the Company, as the case may be, may, within ten days after such written notice of selection is given, deliver to the Company or to Indemnitee, as the case may be, a written objection to such selection; provided,
however, that such objection may be asserted only on the ground that the Independent Counsel so selected does not meet the requirements of “Independent Counsel” as defined in this Agreement, and the objection will set forth with
particularity the factual basis of such assertion. Absent a proper and timely objection, the person so selected will act as Independent Counsel. If a written objection is made and substantiated, the Independent Counsel selected may not serve as
Independent Counsel unless and until such objection is withdrawn or a court has determined that such objection is without merit. If, within 30 days after submission by Indemnitee of a written request for indemnification pursuant to Section
6.1, no Independent Counsel is selected, or an Independent Counsel for which an objection thereto has been properly made remains unresolved, either the Company or Indemnitee may petition the Court of Chancery of the State of Delaware or other
court of competent jurisdiction for resolution of any objection which has been made by the Company or Indemnitee to the other’s selection of Independent Counsel and/or for the appointment as Independent Counsel of a person selected by the court
or by such other person as 

  

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the court may designate, and the person with respect to whom all objections are so resolved or the person so appointed will act as Independent Counsel under
Section 6.2. The Company will pay any and all fees and expenses incurred by such Independent Counsel in connection with acting pursuant to Section 6.2 hereof, and the Company will pay all fees and expenses incident to the procedures of
this Section 6.3, regardless of the manner in which such Independent Counsel was selected or appointed. 
  
 6.4 Burden of Proof. In making a determination with respect to entitlement to indemnification hereunder, the person, persons or
entity making such determination will presume that Indemnitee is entitled to indemnification under this Agreement. Anyone seeking to overcome this presumption will have the burden of proof and the burden of persuasion, by clear and convincing
evidence. In making a determination with respect to entitlement to indemnification hereunder which under this Agreement, the Certificate, Bylaws or applicable law requires a determination of Indemnitee’s good faith and/or whether Indemnitee
acted in a manner which he or she reasonably believed to be in or not opposed to the best interests of the Company, the person, persons or entity making such determination will presume that Indemnitee has at all times acted in good faith and in a
manner he or she reasonably believed to be in or not opposed to the best interests of the Company. Anyone seeking to overcome this presumption will have the burden of proof and the burden of persuasion, by clear and convincing evidence. Indemnitee
will be deemed to have acted in good faith if Indemnitee’s action with respect to a particular Enterprise is based on the records or books of account of such Enterprise, including financial statements, or on information supplied to Indemnitee
by the officers of such Enterprise in the course of their duties, or on the advice of legal counsel for such Enterprise or on information or records given or reports made to such Enterprise by an independent certified public accountant or by an
appraiser or other expert selected by such Enterprise; provided, however this sentence will not be deemed to limit in any way the other circumstances in which Indemnitee may be deemed to have met such standard of conduct. In addition, the
knowledge and/or actions, or failure to act, of any other director, officer, agent or employee of such Enterprise will not be imputed to Indemnitee for purposes of determining the right to indemnification under this Agreement. 
  
 6.5 No Presumption in Absence of a Determination or As Result of an
Adverse Determination; Presumption Regarding Success. Neither the failure of any person, persons or entity chosen to make a determination as to whether Indemnitee has met any particular standard of conduct or had any particular belief to make
such determination, nor an actual determination by such person, persons or entity that Indemnitee has not met such standard of conduct or did not have such belief, prior to or after the commencement of legal proceedings by Indemnitee to secure a
judicial determination that Indemnitee should be indemnified under this Agreement under applicable law, will be a defense to Indemnitee’s claim or create a presumption that Indemnitee has not met any particular standard of conduct or did not
have any particular belief. In addition, the termination of any Proceeding by judgment, order, settlement (whether with or without court approval) or conviction, or upon a plea of nolo contendere, or its equivalent, will not create a
presumption that Indemnitee did not meet any particular standard of conduct or have any particular belief or that a court has determined that indemnification is not permitted by this Agreement or applicable law. In the event that any Proceeding to
which Indemnitee is a party is resolved in any manner other than by final adverse judgment (as to which all rights of appeal therefrom have been exhausted or lapsed) against Indemnitee (including, without limitation, 

  

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settlement of such Proceeding with or without payment of money or other consideration) it will be presumed that Indemnitee has been successful on the merits
or otherwise in such Proceeding. Anyone seeking to overcome this presumption will have the burden of proof and the burden of persuasion, by clear and convincing evidence. 
  
 6.6 Timing of Determination. The Company will use its reasonable best efforts to cause any
determination required to be made pursuant to Section 6.2 to be made as promptly as practicable after Indemnitee has submitted a written request for indemnification pursuant to Section 6.1. If the person, persons or entity chosen to
make a determination does not make such determination within 30 days after the later of the date (a) the Company receives Indemnitee’s request for indemnification pursuant to Section 6.1 and (b) on which an Independent Counsel is
selected pursuant to Section 6.3, if applicable (and all objections to such person, if any, have been resolved), the requisite determination of entitlement to indemnification will be deemed to have been made and Indemnitee will be entitled to
such indemnification, so long as (i) Indemnitee has fulfilled his obligations pursuant to Section 6.8 and (ii) such indemnification is not prohibited under applicable law; provided, however, that such 30 day period may be extended for
a reasonable time, not to exceed an additional 15 days, if the person, persons or entity making the determination with respect to entitlement to indemnification in good faith requires such additional time for the obtaining of or evaluating of
documentation and/or information relating thereto. 
  
 6.7
Timing of Payments. All payments of Expenses, including any Expense Advance, and other amounts by the Company to the Indemnitee pursuant to this Agreement will be made as soon as practicable after a written request or demand
therefor by Indemnitee is presented to the Company, but in no event later than 20 days after (i) such demand is presented or (ii) such later date as a determination of entitlement to indemnification is made in accordance with Section 6.6, if
applicable; provided, however, that an Expense Advance will be made within the time provided in Section 4.3 hereof. 
  
 6.8 Cooperation. Indemnitee will cooperate with the person, persons or entity making a determination with respect to
Indemnitee’s entitlement to indemnification, including providing to such person, persons or entity, upon reasonable advance request, any documentation or information which is not privileged or otherwise protected from disclosure and which is
reasonably available to Indemnitee and reasonably necessary to such determination. Any Expenses incurred by Indemnitee in so cooperating with the person, persons or entity making such determination will be borne by the Company (irrespective of the
determination as to Indemnitee’s entitlement to indemnification), and the Company will indemnify Indemnitee therefor and will hold Indemnitee harmless therefrom. 
  
 6.9 Time for Submission of Request. Indemnitee will be required to submit any request for indemnification
pursuant to this Article 6 within a reasonable time, not to exceed two years, after any judgment, order, settlement, dismissal, arbitration award, conviction, acceptance of a plea of nolo contendere (or its equivalent) or other full or
partial final determination or disposition of the Proceeding (with the latest date of the occurrence of any such event to be considered the commencement of the two year period). 
  

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 ARTICLE 7 
 REMEDIES OF INDEMNITEE 
  
 7.1 Action by Indemnitee. In the event that (i) a determination is made pursuant to Article 6 of this Agreement that Indemnitee is not entitled to indemnification under this Agreement, (ii) an Expense Advance is not
timely made pursuant to Section 4.3 of this Agreement, (iii) no determination of entitlement to indemnification is made within the applicable time periods specified in Section 6.6 or (iv) payment of indemnified amounts is not made
within the applicable time periods specified in Section 6.7, Indemnitee will be entitled to an adjudication in an appropriate court of the State of Delaware, or in any other court of competent jurisdiction, of his entitlement to such
indemnification or payment of an Expense Advance. Alternatively, Indemnitee, at Indemnitee’s option, may seek an award in arbitration to be conducted by a single arbitrator pursuant to the Commercial Arbitration Rules of the American
Arbitration Association. The provisions of Delaware law (without regard to its conflict of laws rules) will apply to any such arbitration. The Company will not oppose Indemnitee’s right to seek any such adjudication or award in arbitration.

  
 7.2 De Novo Review if Prior Adverse
Determination. In the event that a determination is made pursuant to Article 6 that Indemnitee is not entitled to indemnification, any judicial proceeding or arbitration commenced pursuant to this Article 7 will be conducted in all
respects as a de novo trial or arbitration, as applicable, on the merits and Indemnitee will not be prejudiced by reason of that adverse determination. In any judicial proceeding or arbitration commenced pursuant to this Article 7,
Indemnitee will be presumed to be entitled to indemnification under this Agreement, the Company will have the burden of proving Indemnitee is not entitled to indemnification and the Company may not refer to or introduce evidence of any determination
pursuant to Article 6 adverse to Indemnitee for any purpose. If Indemnitee commences a judicial proceeding or arbitration pursuant to this Article 7, Indemnitee will not be required to reimburse the Company for any Expense Advance made
pursuant to Article 4 until a final determination is made with respect to Indemnitee’s entitlement to indemnification (as to which all rights of appeal have been exhausted or lapsed). 
  
 7.3 Company Bound by Favorable Determination by Reviewing Party.
If a determination is made that Indemnitee is entitled to indemnification pursuant to Article 6, the Company will be bound by such determination in any judicial proceeding or arbitration commenced pursuant to this Article 7, absent
(i) a misstatement by Indemnitee of a material fact or an omission of a material fact necessary to make Indemnitee’s statements in connection with the request for indemnification not materially misleading or (ii) a prohibition of such
indemnification under law. 
  
 7.4 Company Bears
Expenses if Indemnitee Seeks Adjudication. In the event that Indemnitee, pursuant to this Article 7, seeks a judicial adjudication or arbitration of his rights under, or to recover damages for breach of, this Agreement, any other
agreement for indemnification, the indemnification or advancement of expenses provisions in the Certificate or Bylaws, payment of Expenses in advance or contribution hereunder or to recover under any director and officer liability insurance policies
maintained by the Company, the Company will, to the fullest extent permitted by law, indemnify and hold harmless Indemnitee against any and all Expenses which are paid or incurred by Indemnitee in connection with such judicial 

  

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adjudication or arbitration, regardless of whether Indemnitee ultimately is determined to be entitled to such indemnification, payment of Expenses in advance
or contribution or insurance recovery. In addition, if requested by Indemnitee, the Company will (within ten days after receipt by the Company of the written request therefor), pay as an Expense Advance such Expenses, to the fullest extent permitted
by law. 
  
 7.5 Company Bound by Provisions of this
Agreement. The Company will be precluded from asserting in any judicial or arbitration proceeding commenced pursuant to this Article 7 that the procedures and presumptions of this Agreement are not valid, binding and enforceable and will
stipulate in any such judicial or arbitration proceeding that the Company is bound by all the provisions of this Agreement. 
  
 ARTICLE 8 
 NON-EXCLUSIVITY,
SUBROGATION; NO DUPLICATIVE PAYMENTS 
  
 8.1
Non-Exclusivity. The rights of indemnification and to receive Expense Advances as provided by this Agreement will not be deemed exclusive of any other rights to which Indemnitee may at any time be entitled under applicable law, the
Certificate, the Bylaws, any agreement, a vote of stockholders, a resolution of the directors or otherwise. To the extent Indemnitee otherwise would have any greater right to indemnification or payment of any advancement of Expenses under any other
provisions under applicable law, the Certificate, Bylaws, any agreement, vote of stockholders, a resolution of directors or otherwise, Indemnitee will be entitled under this Agreement to such greater right. No amendment, alteration or repeal of this
Agreement or of any provision hereof limits or restricts any right of Indemnitee under this Agreement in respect of any action taken or omitted by such Indemnitee prior to such amendment, alteration or repeal. To the extent that a change in the
DGCL, whether by statute or judicial decision, permits greater indemnification than would be afforded currently under the Certificate, Bylaws and this Agreement, it is the intent of the parties hereto that Indemnitee enjoy by this Agreement the
greater benefits so afforded by such change. No right or remedy herein conferred is intended to be exclusive of any other right or remedy, and every other right and remedy will be cumulative and in addition to every other right and remedy given
hereunder or now or hereafter existing at law or in equity or otherwise. The assertion or employment of any right or remedy hereunder, or otherwise, will not prevent the concurrent assertion or employment of any other right or remedy. 
  
 8.2 Subrogation. In the event of any payment by the Company
under this Agreement, the Company will be subrogated to the extent of such payment to all of the rights of recovery of Indemnitee with respect thereto and Indemnitee will execute all papers required and take all action necessary to secure such
rights, including execution of such documents as are necessary to enable the Company to bring suit to enforce such rights (it being understood that all of Indemnitee’s reasonable Expenses related thereto will be borne by the Company).

  
 8.3 No Duplicative Payments. The Company will
not be liable under this Agreement to make any payment of amounts otherwise indemnifiable (or any Expense for which advancement is provided) hereunder if and to the extent that Indemnitee has otherwise actually received such payment under any
insurance policy, contract, agreement or otherwise. The Company’s obligation to indemnify or advance Expenses hereunder to Indemnitee in respect of 

  

 11 

 
Proceedings relating to Indemnitee’s service at the request of the Company as a director, officer, employee, partner, member, manager, trustee,
fiduciary or agent of any other Enterprise will be reduced by any amount Indemnitee has actually received as indemnification or advancement of Expenses from such other Enterprise. 
  
 ARTICLE 9 
 DEFENSE OF PROCEEDINGS 
  
 9.1 Company
Assuming the Defense. Subject to Section 9.3 below, in the event the Company is obligated to pay in advance the Expenses of any Proceeding pursuant to Article 4, the Company will be entitled, by written notice to Indemnitee, to
assume the defense of such Proceeding, with counsel approved by Indemnitee, which approval will not be unreasonably withheld. The Company will identify the counsel it proposes to employ in connection with such defense as part of the written notice
sent to Indemnitee notifying Indemnitee of the Company’s election to assume such defense, and Indemnitee will be required, within ten days following Indemnitee’s receipt of such notice, to inform the Company of its approval of such counsel
or, if it has objections, the reasons therefor. If such objections cannot be resolved by the parties, the Company will identify alternative counsel, which counsel will also be subject to approval by Indemnitee in accordance with the procedure
described in the prior sentence. 
  
 9.2 Right of
Indemnitee to Employ Counsel. Following approval of counsel by Indemnitee pursuant to Section 9.1 and retention of such counsel by the Company, the Company will not be liable to Indemnitee under this Agreement for any fees and expenses of
counsel subsequently incurred by Indemnitee with respect to the same Proceeding; provided, however, that (a) Indemnitee has the right to employ counsel in any such Proceeding at Indemnitee’s expense and (b) the Company will be required
to pay the fees and expenses of Indemnitee’s counsel if (i) the employment of counsel by Indemnitee has been previously authorized by the Company, (ii) Indemnitee reasonably concludes that there is an actual or potential conflict between the
Company (or any other person or persons included in a joint defense) and Indemnitee in the conduct of such defense or representation by such counsel retained by the Company or (iii) the Company does not continue to retain the counsel approved by
Indemnitee. 
  
 9.3 Company Not Entitled to Assume
Defense. Notwithstanding Section 9.1, the Company will not be entitled to assume the defense of any Proceeding brought by or on behalf of the Company or any Proceeding as to which Indemnitee has reasonably made the conclusion
provided for in Section 9.2 (b)(ii). 
  
 ARTICLE 10

 SETTLEMENT 
  
 10.1 Company’s Prior Consent Required. Notwithstanding anything in this Agreement to the contrary, the Company will have no obligation
to indemnify Indemnitee under this Agreement for any amounts paid in settlement of any Proceeding effected without the Company’s prior written consent. 
  
 10.2 When Indemnitee’s Prior Consent Required. The Company will not, without the prior written consent of Indemnitee, consent to the
entry of any judgment against Indemnitee 

  

 12 

 
or enter into any settlement or compromise which (i) includes an admission of fault of Indemnitee, any non-monetary remedy imposed on Indemnitee or a Loss
for which Indemnitee is not wholly indemnified hereunder or (ii) with respect to any Proceeding with respect to which Indemnitee may be or is made a party or a participant or may be or is otherwise entitled to seek indemnification hereunder, does
not include, as an unconditional term thereof, the full release of Indemnitee from all liability in respect of such Proceeding, which release will be in form and substance reasonably satisfactory to Indemnitee. Neither the Company nor Indemnitee
will unreasonably withhold its consent to any proposed settlement; provided, however, Indemnitee may withhold consent to any settlement that does not provide a full and unconditional release of Indemnitee from all liability in respect of such
Proceeding. 
  
 ARTICLE 11 
 DURATION OF AGREEMENT 
  
 11.1 Duration of Agreement. This Agreement will continue until and terminate upon the latest of (a) the statute of limitations applicable to
any claim that could be asserted against an Indemnitee with respect to which Indemnitee may be entitled to indemnification and/or an Expense Advance under this Agreement, (b) ten years after the date that Indemnitee has ceased to serve as a director
or officer of the Company or as a director, officer, employee, partner, member, manager, fiduciary or agent of any other Enterprise which Indemnitee served at the request of the Company, or (c) if, at the later of the dates referred to in (a) and
(b) above, there is pending a Proceeding in respect of which Indemnitee is granted rights of indemnification or the right to an Expense Advance under this Agreement or a Proceeding commenced by Indemnitee pursuant to Article 7 of this
Agreement, one year after the final termination of such Proceeding, including any and all appeals. 
  
 ARTICLE 12 
 MISCELLANEOUS 
  
 12.1 Entire Agreement. This Agreement constitutes the entire
agreement and understanding of the parties in respect of the subject matter hereof and supersedes all prior understandings, agreements or representations by or among the parties, written or oral, to the extent they relate in any way to the subject
matter hereof; provided, however, it is agreed that the provisions contained in this Agreement are a supplement to, and not a substitute for, any provisions regarding the same subject matter contained in the Certificate, the Bylaws and any
employment or similar agreement between the parties. 
  
 12.2
Assignment; Binding Effect; Third Party Beneficiaries. No party may assign either this Agreement or any of its rights, interests or obligations hereunder without the prior written approval of the other party; provided, however,
that the Company may assign all (but not less than all) of its rights, obligations and interests hereunder to any direct or indirect successor to all or substantially all of the business or assets of the Company by purchase, merger, consolidation or
otherwise and will cause such successor to be bound by and expressly assume the terms and provisions hereof. All of the terms, agreements, covenants, representations, warranties and conditions of this Agreement are binding upon, and inure to the
benefit of and are enforceable by, the parties and their respective successors, permitted assigns, heirs, executors 

  

 13 

 
and personal and legal representatives. There are no third party beneficiaries having rights under or with respect to this Agreement. 
  
 12.3 Notices. All notices, requests and other communications
provided for or permitted to be given under this Agreement must be in writing and be given by personal delivery, by certified or registered United States mail (postage prepaid, return receipt requested), by a nationally recognized overnight delivery
service for next day delivery, or by facsimile transmission, as follows (or to such other address as any party may give in a notice given in accordance with the provisions hereof): 
  
 If to Bronco Drilling Company, Inc. 
 14313 North May Avenue, Suite 100 
 Oklahoma City, OK 
 Attention: Zachary M. Graves 
 Facsimile:
(405) 286-6262 
  
 If to Indemnitee, to the address set

 forth on the signature page hereto 
  
 All notices, requests or other communications will be effective and deemed given only as follows: (i) if given by personal delivery, upon such personal delivery, (ii) if
sent by certified or registered mail, on the fifth business day after being deposited in the United States mail, (iii) if sent for next day delivery by overnight delivery service, on the date of delivery as confirmed by written confirmation of
delivery, (iv) if sent by facsimile, upon the transmitter’s confirmation of receipt of such facsimile transmission, except that if such confirmation is received after 5:00 p.m. (in the recipient’s time zone) on a business day, or is
received on a day that is not a business day, then such notice, request or communication will not be deemed effective or given until the next succeeding business day. Notices, requests and other communications sent in any other manner, including by
electronic mail, will not be effective. 
  
 12.4
Specific Performance; Remedies. Each party acknowledges and agrees that the other party would be damaged irreparably if any provision of this Agreement were not performed in accordance with its specific terms or were otherwise breached.
Accordingly, the parties will be entitled to an injunction or injunctions to prevent breaches of the provisions of this Agreement and to enforce specifically this Agreement and its provisions in any action or proceeding instituted in any court of
the United States or any state thereof having jurisdiction over the parties and the matter, in addition to any other remedy to which they may be entitled, at law or in equity. Except as expressly provided herein, the rights, obligations and remedies
created by this Agreement are cumulative and in addition to any other rights, obligations or remedies otherwise available at law or in equity. Except as expressly provided herein, nothing herein will be considered an election of remedies.

  

 14 

 12.5 Submission to Jurisdiction. Any Proceeding seeking to enforce any provision of, or
based on any matter arising out of or in connection with, this Agreement may only be brought in the Court of Chancery of the State of Delaware in and for New Castle County, which will be the exclusive and only proper forum for adjudicating such
Proceeding, and each party consents to the exclusive jurisdiction and venue of such court (and of the appropriate appellate courts therefrom) in any such Proceeding and irrevocably waives, to the fullest extent permitted by law, any objection that
it may now or hereafter have to the laying of the venue of any such Proceeding in any such court or that any such Proceeding brought in any such court has been brought in an inconvenient forum. Process in any such action, suit or proceeding may be
served on any party anywhere in the world, whether within or without the jurisdiction of any such court. 
  
 12.6 Headings. The article and section headings contained in this Agreement are inserted for convenience only and will not affect in any way
the meaning or interpretation of this Agreement. 
  
 12.7
Governing Law. This Agreement will be governed by and construed in accordance with the laws of the State of Delaware, without giving effect to any choice of law principles. 
  
 12.8 Amendment. This Agreement may not be amended or modified except by a writing signed by all of the
parties. 
  
 12.9 Extensions; Waivers. Any party
may, for itself only, (i) extend the time for the performance of any of the obligations of any other party under this Agreement, (ii) waive any inaccuracies in the representations and warranties of any other party contained herein or in any document
delivered pursuant hereto and (iii) waive compliance with any of the agreements or conditions for the benefit of such party contained herein. Any such extension or waiver will be valid only if set forth in a writing signed by the party to be bound
thereby. No waiver by any party of any default, misrepresentation or breach of warranty or covenant hereunder, whether intentional or not, may be deemed to extend to any prior or subsequent default, misrepresentation or breach of warranty or
covenant hereunder or affect in any way any rights arising because of any prior or subsequent such occurrence. Neither the failure nor any delay on the part of any party to exercise any right or remedy under this Agreement will operate as a waiver
thereof, nor will any single or partial exercise of any right or remedy preclude any other or further exercise of the same or of any other right or remedy 
  
 12.10 Severability. The provisions of this Agreement will be deemed severable and the invalidity or unenforceability of any provision will
not affect the validity or enforceability of the other provisions hereof; provided that if any provision of this Agreement, as applied to any party or to any circumstance, is judicially determined not to be enforceable in accordance with its terms,
the parties agree that the court judicially making such determination may modify the provision in a manner consistent with its objectives such that it is enforceable, and/or to delete specific words or phrases, and in its modified form, such
provision will then be enforceable and will be enforced. 
  
 12.11 Counterparts; Effectiveness. This Agreement may be executed in two or more counterparts, each of which will be deemed an original but all of which together will constitute 

  

 15 

 
one and the same instrument. This Agreement will become effective when one or more counterparts have been signed by each of the parties and delivered to the
other parties, which delivery may be made by exchange of copies of the signature page by facsimile transmission. 
  
 12.12 Construction. This Agreement has been freely and fairly negotiated among the parties. If an ambiguity or question of intent or
interpretation arises, this Agreement will be construed as if drafted jointly by the parties and no presumption or burden of proof will arise favoring or disfavoring any party because of the authorship of any provision of this Agreement. Any
reference to any law will be deemed also to refer to such law as amended and all rules and regulations promulgated thereunder, unless the context requires otherwise. The words “include,” “includes,” and “including” will
be deemed to be followed by “without limitation.” Pronouns in masculine, feminine, and neuter genders will be construed to include any other gender, and words in the singular form will be construed to include the plural and vice versa,
unless the context otherwise requires. The words “this Agreement,” “herein,” “hereof,” “hereby,” “hereunder,” and words of similar import refer to this Agreement as a whole and not to any particular
subdivision unless expressly so limited. The parties intend that each representation, warranty, and covenant contained herein will have independent significance. If any party has breached any representation, warranty, or covenant contained herein in
any respect, the fact that there exists another representation, warranty or covenant relating to the same subject matter (regardless of the relative levels of specificity) which the party has not breached will not detract from or mitigate the fact
that the party is in breach of the first representation, warranty, or covenant. Time is of the essence in the performance of this Agreement. 
  
 [Signature page follows] 
  

 16 

 IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the date first above written.

  

			
	 BRONCO DRILLING COMPANY, INC.

		
	By:	 	 
	 Name:
	 	 
	 Title:
	 	 
	
	Indemnitee
	
	 
		
	 Address:
	 	 [14313 North May Avenue
 Suite
100
 Oklahoma City, OK 73134]

	 Fax:
	 	 
	 	 	 Attn:

  

 17Form of Registration Rights Agreement

 Exhibit 4.2 
  

REGISTRATION RIGHTS AGREEMENT 
  
 DATED AS OF AUGUST     , 2005

  
 BY AND
BETWEEN 
  
 BRONCO
DRILLING COMPANY, INC. 
  
 AND 
  
 BRONCO
DRILLING HOLDINGS, L.L.C. 

 TABLE OF CONTENTS 
  

					
	 	  	 	  	PAGE

	 Section 1.
	  	 Definitions.
	  	1
			
	 Section 2.
	  	 Demand Registrations.
	  	3
			
	 Section 3.
	  	 Piggyback Registrations.
	  	5
			
	 Section 4.
	  	 Obligations of the Company.
	  	6
			
	 Section 5.
	  	 Registration Expenses.
	  	10
			
	 Section 6.
	  	 Indemnification.
	  	11
			
	 Section 7.
	  	 Rules 144 and 144A.
	  	13
			
	 Section 8.
	  	 Underwritten Registrations.
	  	14
			
	 Section 9.
	  	 Covenants of Holders.
	  	14
			
	 Section 10.
	  	 Miscellaneous.
	  	14

 REGISTRATION RIGHTS AGREEMENT

  
 THIS REGISTRATION RIGHTS AGREEMENT (the
“Agreement”) is made and entered into as of August     , 2005, by and between Bronco Drilling Company, Inc., a Delaware corporation (the “Company”), and Bronco
Drilling Holdings, L.L.C., a Delaware limited liability company (the “Stockholder”). 
  
 WHEREAS, the Company was formed in May 2005 as a wholly owned subsidiary of the Bronco Drilling Company, L.L.C., an Oklahoma limited liability company
(“Bronco”) in contemplation of an initial public offering of common stock of the Company (“Common Stock Offering”); 
  
 WHEREAS, immediately prior to the commencement of the Common Stock Offering, on the date hereof the Company, Bronco and
Stockholder will enter into a transaction (the “Merger”) in which (i) Bronco mergers with and into the Company with the Company being the surviving corporation of the Merger and (ii) Stockholder will receive 13,360,000
validly issued, fully paid and nonassessable shares of common stock, par value $0.01 per share, of the Company; and 
  
 WHEREAS, in connection with the Merger, the parties hereto desire to enter into this Agreement to govern certain of their rights, duties and obligations
relating to registration of the Registrable Securities (as defined herein). 
  
 NOW, THEREFORE, for good, valuable and binding consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto, intending to be legally bound hereby, now agree as follows: 

 
 STATEMENT OF
AGREEMENT 
  
 Section 1.
Definitions. 
  
 As used in this Agreement, the following
terms shall have the meanings set forth below: 
  
 “Charter” means the Amended and Restated Certificate of Incorporation of the Company, as amended from time to time. 
  
 “Commission” means the United States Securities and Exchange Commission or any other United States federal agency at the time
administering the Securities Act. 
  
 “Common
Stock” means the Company’s common stock, par value $0.01 per share, or any other shares of capital stock or other securities of the Company into which such shares of Common Stock shall be reclassified or changed, including by
reason of a merger, consolidation, reorganization or recapitalization. If the Common Stock has been so reclassified or changed, or if the Company pays a dividend or makes a distribution on the Common Stock in shares of capital stock, or subdivides
(or combines) its outstanding shares of Common Stock into a greater (or smaller) number of shares of Common Stock, a share of Common Stock shall be deemed to be 

 such number of shares of stock and amount of other securities to which a holder of a share of Common Stock outstanding
immediately prior to such change, reclassification, exchange, dividend, distribution, subdivision or combination would be entitled. 
  
 “Delay Period” has the meaning set forth in Section 4(a) of this Agreement. 
  
 “Demand Notice” has the meaning set forth in
Section 2(a) of this Agreement. 
  
 “Demand
Registration” has the meaning set forth in Section 2(a) of this Agreement. 
  
 “Exchange Act” means the U.S. Securities Exchange Act of 1934, as amended, and the rules and regulations of the Commission thereunder. 
  
 “Holder” means a person who owns Registrable
Securities and is either (i) the Stockholder or a Permitted Transferee of the Stockholder that has agreed to be bound by the terms of this Agreement as if such Person were the Stockholder, (ii) upon the death of any Holder, the executor of the
estate of such Holder or such Holder’s heirs, devisees, legatees or assigns or (iii) upon the disability of any Holder, any guardian or conservator of such Holder. 
  
 “Interruption Period” has the meaning set forth in the last paragraph in Section 4(b).

  
 “Losses” has the meaning set forth in
Section 6(a) of this Agreement. 
  
 “Misstatement/Omission” has the meaning set forth in Section 6(a) of this Agreement. 
  
 “Permitted Transferee” means any Person to whom the rights under this Agreement have been assigned in accordance with the
provisions of Section 10(d) hereof. 
  
 “Person” means any natural person, corporation, partnership, firm, association, trust, government, governmental agency, limited liability company or any other entity, whether acting in an individual, fiduciary or
other capacity. 
  
 “Piggyback
Registration” has the meaning set forth in Section 3(a) of this Agreement. 
  
 “Prospectus” means the prospectus included in any Registration Statement, as amended or supplemented by any prospectus supplement, with respect to the terms of the offering of any portion of
the Registrable Securities covered by such Registration Statement, and all other amendments and supplements to the Prospectus, including post-effective amendments, and all material incorporated by reference or deemed to be incorporated by reference
in such prospectus. 
  
 “Registrable
Securities” means the shares of Common Stock issued to the Stockholder in connection with the Reorganization. If as a result of any reclassification, stock dividends or stock splits or in connection with a combination of shares,
recapitalization, merger, consolidation or other reorganization or other transaction or event, any capital stock, evidence of indebtedness, warrants, options, rights or other securities (collectively “Other Securities”) are
issued or transferred to a Holder in respect of Registrable Securities held by the Holder, references herein 
  

 2 

 to Registrable Securities shall be deemed to include such Other Securities. As to any particular Registrable Securities,
such securities will cease to be Registrable Securities when (i) they have been distributed to the public pursuant to an offering registered under the Securities Act, (ii) they have been distributed to the public pursuant to Rule 144 (or any
successor provision) under the Securities Act, or (iii) they have been sold to any Person to whom the rights under this Agreement are not assigned in accordance with this Agreement. 
  
 “Registration Statement” means any registration statement under the Securities Act of the Company
that covers any of the Registrable Securities, including the related Prospectus, amendments and supplements to such registration statement or Prospectus, including pre- and post-effective amendments, all exhibits, and all materials incorporated by
reference or deemed to be incorporated by reference in such registration statement or Prospectus. 
  
 “Securities Act” means the United States Securities Act of 1933, as amended, and the rules and regulations of the Commission
promulgated thereunder. 
  
 “Stockholder”
has the meaning set forth in the introductory paragraph of this Agreement. 
  
 Section 2. Demand Registrations. 
  
 (a) Right to Demand. Upon the terms and subject to the conditions of this Agreement, (i) Holders of at least a majority of the aggregate amount of outstanding Registrable Securities shall have the right, by
written notice (the “Demand Notice”) given to the Company, to request the Company to register under and in accordance with the provisions of the Securities Act all or part of the Registrable Securities designated by such
Holders (a “Demand Registration”). Upon receipt of any such Demand Notice, the Company will promptly notify all other Holders of the receipt of such Demand Notice and allow them the opportunity to include Registrable
Securities in the proposed registration by giving notice to the Company within five days after the Holder receives such notice; provided, that Holders joining in a proposed registration pursuant to this sentence shall not be deemed to have
exercised a Demand Registration for purposes of Section 2(b) hereof and such Holders shall be included in such registration on the basis set forth in Section 2(h) hereof. The Company shall not be required to register any Registrable
Securities under this Section 2 unless the anticipated aggregate offering price to the public for any such offering of the Registrable Securities included in such Demand Notice is expected to be at least $1 million. 
  
 (b) Number of Demand Registrations. Holders shall be entitled to have
three Demand Registrations effected. A Demand Registration shall not be deemed to be effected and shall not count as a Demand Registration of any Person (i) if a Registration Statement with respect thereto shall not have become effective under the
Securities Act and remained effective (A) for at least 180 days (excluding any Interruption Period or Delay Period) in the case of a Demand Registration that is not on a Form S-3 or other comparable form or (B) for at least two years (excluding any
Interruption Period or Delay Period) in the case of a Demand Registration on Form S-3 or other comparable form, or until the completion of the distribution of the Registrable Securities thereunder, whichever is earlier (including, without
limitation, because of withdrawal of such Registration Statement by the Holders pursuant to Section 2(f) hereunder), (ii) if, after it has become effective, such registration is interfered with for any reason by any stop 
  

 3 

 order, injunction or other order or requirement of the Commission or any governmental authority, or as a result of the
initiation of any proceeding for such stop order by the Commission through no fault of the Holders and the result of such interference is to prevent the Holders from disposing of such Registrable Securities proposed to be sold in accordance with the
intended methods of disposition, or (iii) if the conditions to closing specified in the purchase agreement or underwriting agreement entered into in connection with any underwritten offering shall not be satisfied or waived with the consent of the
Holders of a majority in number of the Registrable Securities to be included in such Demand Registration, other than as a result of any breach by the Holders or any underwriter of its obligations thereunder or hereunder. 
  
 (c) Registration Statement. Subject to paragraph (a) above, as soon as
practicable, but in any event within 45 days of the date on which the Company first receives one or more Demand Notices pursuant to Section 2(a) hereof, the Company shall file with the Commission a Registration Statement on the appropriate
form for the registration and sale of the total number of Registrable Securities specified in such Demand Notice, together with the number of Registrable Securities requested to be included in the Demand Registration by other Holders, in accordance
with the intended method or methods of distribution specified by the Holders in such Demand Notice. The Company shall use its best efforts to cause such Registration Statement to be declared effective by the Commission as soon as reasonably
practicable. 
  
 (d) Amendments; Supplements. Subject to
Section 4(a), upon the occurrence of any event that would cause the Registration Statement (A) to contain a material misstatement or omission or (B) to be not effective and usable for resale of Registrable Securities during the period that
such Registration Statement is required to be effective and usable, the Company shall file an amendment to the Registration Statement as soon as reasonably practicable, in the case of clause (A), correcting any such misstatement or omission and, in
the case of either clause (A) or (B), use its best efforts to cause such amendment to be declared effective and such Registration Statement to become usable as soon as reasonably practicable thereafter. 
  
 (e) Effectiveness. The Company agrees to use its best efforts to keep
any Registration Statement filed pursuant to this Section 2 continuously effective and usable for the sale of Registrable Securities until the earlier of (i) (a) in the case of a Demand Registration for delayed or continuous offerings of
Registrable Securities filed on Form S-3 or another comparable form, two years after the date on which the Commission declares such Registration Statement effective (excluding any Interruption Period or Delay Period) or (b) in the case of a Demand
Registration that is not on Form S-3 or another comparable form, 180 days from the date on which the Commission declares such Registration Statement effective (excluding any Interruption Period or Delay Period) and (ii) the date on which there are
no longer any Registrable Securities. 
  
 (f) Holders
Withdrawal. Holders of a majority in number of the Registrable Securities to be included in a Demand Registration pursuant to this Section 2 may, at any time prior to the effective date of the Registration Statement in respect thereof,
revoke such request by providing a written notice to the Company to such effect. 
  

 4 

 (g) Preemption of Demand Registration. Notwithstanding anything to the contrary contained herein,
after receiving a written request for a Demand Registration, the Company may elect to effect an underwritten primary registration in lieu of the Demand Registration if the Company’s Board of Directors believes that such primary registration
would be in the best interests of the Company. If the Company so elects to effect a primary registration, the Company shall give prompt written notice (which shall be given not later than 20 days after the date of the Demand Notice) to all Holders
of its intention to effect such a registration and shall afford the Holders the rights contained in Section 3 with respect to Piggyback Registrations. In the event that the Company so elects to effect a primary registration after receiving a
request for a Demand Registration, the Company shall use its best efforts to have the Registration Statement declared effective by the Commission as soon as reasonably practicable. In addition, the request for a Demand Registration shall be deemed
to have been withdrawn and such primary registration shall not be deemed to be a Demand Registration. 
  
 (h) Priority on Demand Registrations. If a Demand Registration is an underwritten offering and includes securities for sale by the Company, and the
managing underwriter (such underwriter to be chosen by Holders of a majority of the Registrable Securities included in such registration, subject to the Company’s reasonable approval) advises the Company, in writing, that, in its good faith
judgment, the number of securities requested to be included in such registration exceeds the number which can be sold in such offering without materially and adversely affecting the marketability of the offering, then the Company will include in any
such registration the maximum number of shares that the managing underwriter advises the Company can be sold in such offering allocated as follows: (i) first, the Registrable Securities requested to be included in such registration by the initiating
Holders and securities of other Holders of Registrable Securities, with such securities to be included on a pro rata basis (or in such other proportion mutually agreed among such Holders) based on the amount of securities requested to be included
therein and (ii) second, to the extent that any other securities may be included without exceeding the limitations recommended by the underwriter as aforesaid, the securities that the Company proposes to sell. If the initiating Holders are not
allowed to register all of the Registrable Securities requested to be included by such Holders because of allocations required by this section, such initiating Holders shall not be deemed to have exercised a Demand Registration for purposes of
Section 2(b). 
  
 Section 3. Piggyback
Registrations. 
  
 (a) Right to Piggyback
Registrations. Whenever the Company or another party having registration rights proposes that the Company register any of the Company’s equity securities under the Securities Act (other than a registration on Form S-4 relating solely to a
transaction described in Rule 145 of the Securities Act or a registration on Form S-8 or any successor forms thereto), whether or not for sale for the Company’s own account, the Company will give prompt written notice of such proposed filing to
all Holders at least 30 days before the anticipated filing date. Such notice shall offer such Holders the opportunity to register such amount of Registrable Securities as they shall request (a “Piggyback Registration”).
Subject to Section 3(b) hereof, the Company shall include in each such Piggyback Registration all Registrable Securities with respect to which the Company has received written requests for inclusion therein within 20 days after such notice
has been given by the Company to the Holders. If the Registration Statement relating to the Piggyback Registration is for an underwritten 
  

 5 

 offering, such Registrable Securities shall be included in the underwriting on the same terms and conditions as the
securities otherwise being sold through the underwriters. Each Holder shall be permitted to withdraw all or part of the Registrable Securities from a Piggyback Registration at any time prior to the effective time of such Piggyback Registration.

  
 (b) Priority on Piggyback Registrations. If a Piggyback
Registration is an underwritten offering by or through one or more underwriters of recognized standing and the managing underwriters advise the party or parties initiating such offering in writing (a copy of which writing shall be provided to the
Holders) that in their good faith judgment the number of securities requested to be included in such registration exceeds the number which can be sold in such offering without materially and adversely affecting the marketability of the offering,
then any such registration shall include the maximum number of shares that such managing underwriters advise can be sold in such offering allocated as follows: (i) first, the securities the party or parties initiating such offering propose to sell,
and (ii) second, to the extent that any other securities may be included without exceeding the limitations recommended by the underwriters as aforesaid, (x) if the Company has initiated such offering, the Registrable Securities to be included in
such registration by the Holders, with such additional securities to be included on a pro rata basis (or in such other proportion mutually agreed among the Holders and such other holders), based on the amount of Registrable Securities and other
securities requested to be included therein, and (y) if a party other than the Company initiated such offering (subject to Section 3(b)(i) above), securities proposed to be sold by the Company, and the Registrable Securities to be included in
such registration by the Holders, with such additional securities to be included on a pro rata basis (or in such other proportion mutually agreed among the Company, the Holders and such other holders), based on the amount of Registrable Securities
and other securities requested to be included therein. 
  
 Section
4. Obligations of the Company. 
  
 (a) Delay
Period. Notwithstanding the foregoing, the Company shall have the right to delay the filing of any Registration Statement otherwise required to be prepared and filed by the Company pursuant to Sections 2 or 3, or to suspend the use of any
Registration Statement, for a period not in excess of 60 consecutive calendar days (a “Delay Period”) if (i) the Board of Directors of the Company by written resolution determines that filing or maintaining the effectiveness
of such Registration Statement would have a material adverse effect on the Company or the holders of its capital stock in relation to any material acquisition or disposition, financing or other corporate transaction or (ii) the Board of Directors of
the Company by written resolution determines in good faith that the filing of a Registration Statement or maintaining the effectiveness of a current Registration Statement would require disclosure of material information that the Company has a valid
business purpose for retaining as confidential at such time. The Company shall not be entitled to exercise a Delay Period more than one time in any 12-month period. 
  

 6 

 (b) Registration Procedures. Whenever the Company is required to register Registrable Securities
pursuant to Sections 2 or 3 hereof, the Company will use its best efforts to effect the registration to permit the sale of such Registrable Securities in accordance with the intended method or methods of disposition thereof, and pursuant
thereto the Company will as expeditiously as possible: 
  
 (1)
prepare and file with the Commission a Registration Statement with respect to such Registrable Securities as prescribed by Sections 2 or 3 on a form available for the sale of the Registrable Securities by the holders thereof in accordance
with the intended method or methods of distribution thereof and use its best efforts to cause each such Registration Statement to become and remain effective within the time periods and otherwise as provided herein; 
  
 (2) prepare and file with the Commission such amendments (including
post-effective amendments) to the Registration Statement and such supplements to the Prospectus as may be necessary to keep such Registration Statement effective and to comply with the provisions of the Securities Act with respect to the disposition
of all securities covered by such Registration Statement until such time as all of such securities have been disposed of in accordance with the intended methods of disposition by the seller or sellers thereof set forth in such Registration
Statement; 
  
 (3) furnish to each selling Holder of Registrable
Securities covered by a Registration Statement and to each underwriter, if any, such number of copies of such Registration Statement, each amendment and post-effective amendment thereto, the Prospectus included in such Registration Statement
(including each preliminary prospectus and any supplement to such Prospectus and any other prospectus filed under Rule 424 of the Securities Act), in each case including all exhibits, and such other documents as such Holder may reasonably request in
order to facilitate the disposition of the Registrable Securities owned by such Holder or to be disposed of by such underwriter (the Company hereby consenting to the use in accordance with all applicable law of each such Registration Statement (or
amendment or post-effective amendment thereto) and each such Prospectus (or preliminary prospectus or supplement thereto) by each such Holder and the underwriters, if any, in connection with the offering and sale of the Registrable Securities
covered by such Registration Statement or Prospectus); 
  
 (4)
use its best efforts to register or qualify and, if applicable, to cooperate with the selling Holders, the underwriters, if any, and their respective counsel in connection with the registration or qualification (or exemption from such registration
or qualification) of, the Registrable Securities for offer and sale under the securities or blue sky laws of such jurisdictions as any selling Holder or managing underwriters (if any) shall reasonably request, to keep each such registration or
qualification (or exemption therefrom) effective during the period such Registration Statement is required to be kept effective and to do any and all other acts or things necessary or advisable to enable the disposition in such jurisdictions of the
securities covered by the applicable Registration Statement; provided, that, the Company will not be required to (i) qualify generally to do business in any jurisdiction where it would not otherwise be required to qualify but for this paragraph or
(ii) consent to general service of process or taxation in any such jurisdiction where it is not so subject; 
  
 (5) cause all such Registrable Securities to be listed or quoted (as the case may be) on each national securities exchange or other securities market on
which securities of the same class as the Registrable Securities are then listed or quoted; 
  

 7 

 (6) provide a transfer agent and registrar for all such Registrable Securities and a CUSIP number for
all such Registrable Securities not later than the effective date of such Registration Statement; 
  
 (7) comply with all applicable rules and regulations of the Commission, and make available to its security holders an earnings statement satisfying the
provisions of Section 11(a) of the Securities Act and Rule 158 thereunder (or any similar rule promulgated under the Securities Act) no later than 45 days after the end of any 12-month period (or 90 days after the end of any 12-month period if such
period is a fiscal year) (or in each case within such extended period of time as may be permitted by the Commission for filing the applicable report with the Commission) (i) commencing at the end of any fiscal quarter in which Registrable Securities
are sold to underwriters in an underwritten offering or (ii) if not sold to underwriters in such an offering, commencing on the first day of the first fiscal quarter of the Company after the effective date of a Registration Statement; 
  
 (8) use its best efforts to prevent the issuance of any order suspending the
effectiveness of a Registration Statement or suspending the qualification (or exemption from qualification) of any of the Registrable Securities included therein for sale in any jurisdiction, and, in the event of the issuance of any stop order
suspending the effectiveness of a Registration Statement, or of any order suspending the qualification of any Registrable Securities included in such Registration Statement for sale in any jurisdiction, the Company will use its best efforts promptly
to obtain the withdrawal of such order at the earliest possible moment; 
  
 (9) obtain “cold comfort” letters and updates thereof (which letters and updates (in form, scope and substance) shall be reasonably satisfactory to the managing underwriters, if any, and the Holders) from
the independent certified public accountants of the Company (and, if necessary, any other independent certified public accountants of any subsidiary of the Company or of any business acquired by the Company for which financial statements and
financial data are, or are required to be, included in the Registration Statement), addressed to each of the underwriters, if any, and each selling Holder of Registrable Securities, such letters to be in customary form and covering matters of the
type customarily covered in “cold comfort” letters in connection with underwritten offerings and such other matters as the underwriters, if any, or the Holders of a majority of the Registrable Securities being included in the registration
may reasonably request; 
  
 (10) obtain opinions of independent
counsel to the Company and updates thereof (which counsel and opinions (in form, scope and substance) shall be reasonably satisfactory to the managing underwriters, if any, and the Holders of a majority of the Registrable Securities being included
in the registration), addressed to each selling Holder and each of the underwriters, if any, covering the matters customarily covered in opinions of issuer’s counsel requested in underwritten offerings, such as the effectiveness of the
Registration Statement and such other matters as may be requested by such counsel and underwriters, if any; 
  
 (11) promptly notify the selling Holders and the managing underwriters, if any, and confirm such notice in writing, when a Prospectus or any supplement
or post-effective amendment to such Prospectus has been filed, and, with respect to a Registration Statement or any post-effective amendment thereto, when the same has become effective, of any 
  

 8 

 request by the Commission or any other federal or state governmental authority for amendments or supplements to a
Registration Statement or related Prospectus or for additional information, of the issuance by the Commission of any stop order suspending the effectiveness of a Registration Statement or of any order preventing or suspending the use of any
Prospectus or the initiation of any proceedings by any Person for that purpose, of the receipt by the Company of any notification with respect to the suspension of the qualification or exemption from qualification of a Registration Statement or any
of the Registrable Securities for offer or sale under the securities or blue sky laws of any jurisdiction, or the contemplation, initiation or threatening, of any proceeding for such purpose, and of the happening of any event or the existence of any
facts that make any statement made in such Registration Statement or Prospectus untrue in any material respect or that require the making of any changes in such Registration Statement or Prospectus so that it will not contain any untrue statement of
a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances under which they were made (in the case of any Prospectus), not misleading (which notice
shall be accompanied by an instruction to the selling Holders and the managing underwriters, if any, to suspend the use of the Prospectus until the requisite changes have been made); 
  
 (12) if requested by the managing underwriters, if any, or a Holder of Registrable Securities being sold, promptly
incorporate in a prospectus, supplement or post-effective amendment such information as the managing underwriters, if any, and the Holders of a majority of the Registrable Securities being sold reasonably request to be included therein relating to
the sale of the Registrable Securities, including, without limitation, information with respect to the number of shares of Registrable Securities being sold to underwriters, the purchase price being paid therefor by such underwriters and with
respect to any other terms of the underwritten offering of the Registrable Securities to be sold in such offering, and make all required filings of such prospectus, supplement or post-effective amendment promptly following notification of the
matters to be incorporated in such supplement or post-effective amendment; 
  
 (13) if requested, furnish to each selling Holder of Registrable Securities and the managing underwriter, without charge, at least one signed copy of the Registration Statement; 
  
 (14) as promptly as practicable upon the occurrence of any event
contemplated by Section 4(b)(11) above, prepare a supplement or post-effective amendment to the Registration Statement or the Prospectus, or any document incorporated therein by reference, or file any other required document so that, as
thereafter delivered to the purchasers of the Registrable Securities being sold hereunder, the Prospectus will not contain an untrue statement of a material fact or an omission to state a material fact required to be stated in a Registration
Statement or Prospectus or necessary to make the statements therein, in light of the circumstances under which they were made, not misleading; and 
  
 (15) if such offering is an underwritten offering, enter into such agreements (including an underwriting agreement in form, scope and substance as is
customary in underwritten offerings) and take all such other appropriate and reasonable actions requested by the Holders owning a majority of the Registrable Securities being sold in connection therewith or by the managing underwriters (including
cooperating in reasonable marketing efforts, including 
  

 9 

 in connection with any Demand Registration, participation by senior executives of the Company in any “roadshow”
or similar meeting with potential investors) in order to expedite or facilitate the disposition of such Registrable Securities, and in such connection, provide indemnification provisions and procedures substantially to the effect set forth in
Section 6 hereof with respect to all parties to be indemnified pursuant to said Section. The above shall be done at each closing under such underwriting or similar agreement, or as and to the extent required thereunder. 
  
 Each Holder agrees by acquisition of such Registrable Securities that, upon
receipt of written notice from the Company of the happening of any event of the kind described in Section 4(b)(11), such Holder will forthwith discontinue disposition of such Registrable Securities covered by such Registration Statement until
such Holder’s receipt of the copies of the supplemented or amended Registration Statement contemplated by Section 4(b)(14), or until it is advised in writing by the Company that the use of the applicable Prospectus may be resumed, and
has received copies of any additional or supplemental filings that are incorporated or deemed to be incorporated by reference in such prospectus (such period during which disposition is discontinued being an “Interruption
Period”), and, if so directed by the Company, such Holder will deliver to the Company all copies of the Prospectus covering such Registrable Securities current at the time of receipt of such notice. 
  
 Section 5. Registration Expenses. 
  
 (a) Expenses Payable by the Company. The Company shall bear all
expenses incurred with respect to the registration or attempted registration of the Registrable Securities pursuant to Sections 2 or 3 of this Agreement as provided herein. Such expenses shall include, without limitation, (i) all
registration, qualification and filing fees (including, without limitation, (A) fees with respect to compliance with the Commission, (B) fees with respect to filings required to be made with the national securities exchange or national market system
on which the Common Stock is then traded or quoted and (C) fees and expenses of compliance with state securities or blue sky laws (including, without limitation, fees and disbursements of counsel for the Company or the underwriters, or both, in
connection with blue sky qualifications of Registrable Securities)), (ii) messenger and delivery expenses, word processing, duplicating and printing expenses (including without limitation, expenses of printing certificates for Registrable Securities
in a form eligible for deposit with The Depository Trust Company, printing preliminary prospectuses, prospectuses, prospectus supplements, including those delivered to or for the account of the Holders and provided in this Agreement, and blue sky
memoranda), (iii) fees and disbursements of counsel for the Company, (iv) fees and disbursements of all independent certificated public accountants for the Company (including, without limitation, the expense of any “comfort letters”
required by or incident to such performance), (v) all out-of-pocket expenses of the Company (including without limitation, expenses incurred by the Company, its officers, directors, and employees performing legal or accounting duties or preparing or
participating in “roadshow” presentations or of any public relations, investor relations or other consultants or advisors retained by the Company in connection with any roadshow, including travel and lodging expenses of such roadshows),
(vi) fees and expenses incurred in connection with the quotation or listing of shares of Common Stock on any national securities exchange or other securities market, and (vii) reasonable fees and expenses of one firm of counsel for all selling
Holders (which shall be chosen by the Holders of a majority of Registrable Securities to be included in such offering). 
  

 10 

 (b) Expenses Payable by the Holders. Each Holder shall pay all underwriting discounts and
commissions or placement fees of underwriters or broker’s commissions incurred in connection with the sale or other disposition of Registrable Securities for or on behalf of such Holder’s account. 
  
 Section 6. Indemnification. 
  
 (a) Indemnification by the Company. The Company agrees to indemnify,
to the fullest extent permitted by law, each Holder, each affiliate of a Holder and each director, officer, employee, manager, stockholder, partner, member, counsel, agent or representative of such Holder and its affiliates and each Person who
controls any such Person (within the meaning of either Section 15 of the Securities Act or Section 20 of the Exchange Act) (collectively, “Holder Indemnified Parties”) against, and hold it and them harmless from, all losses,
claims, damages, liabilities, actions, proceedings, costs (including, without limitation, costs of preparation and attorneys’ fees and disbursements) and expenses, including expenses of investigation and amounts paid in settlement
(collectively, “Losses”) arising out of, caused by or based upon any untrue or alleged untrue statement of material fact contained in any Registration Statement, or any omission or alleged omission of a material fact required
to be stated therein or necessary to make the statements therein not misleading (a “Misstatement/Omission”), or any violation or alleged violation by the Company of the Securities Act, the Exchange Act, any state securities
law, or any rule or regulation promulgated under the Securities Act, the Exchange Act or any state securities law, except that the Company shall not be liable insofar as such Misstatement/Omission or violation is made in reliance upon and in
conformity with information furnished in writing to the Company by such Holder expressly for use therein; provided, further, that the Company shall not be liable for a Holder’s failure to deliver or cause to be delivered (to the extent such
delivery is required under the Securities Act) the Prospectus contained in the Registration Statement, furnished to it by the Company on a timely basis at or prior to the time such action is required by the Securities Act to the person claiming a
Misstatement/Omission if such Misstatement/Omission was corrected in such Prospectus. In connection with an underwritten offering, the Company will indemnify such underwriters, selling brokers, dealer managers and similar securities industry
professionals participating in the distribution, their officers and directors and each Person who controls such underwriters (within the meaning of either Section 15 of the Securities Act or Section 20 of the Exchange Act) to the same extent as
provided above with respect to the indemnification of the Holders. This indemnity shall be in addition to any other indemnification arrangements to which the Company may otherwise be party. 
  
 (b) Indemnification by the Holders. In connection with any
Registration Statement in which a Holder is participating, each such Holder agrees to indemnify, to the fullest extent permitted by law, the Company and each director and officer of the Company and each Person who controls the Company (within the
meaning of either Section 15 of the Securities Act or Section 20 of the Exchange Act) against, and hold it harmless from, any Losses arising out of or based upon (i) any Misstatement/Omission contained in the Registration Statement, if and to the
extent that such Misstatement/Omission was made in reliance upon and in conformity with information furnished in writing by such Holder for use therein, or (ii) the failure by such Holder to deliver or cause to be delivered (to the extent such
delivery is required under the Securities Act) the Prospectus contained in the Registration Statement, furnished to it by the Company on a 
  

 11 

 timely basis at or prior to the time such action is required by the Securities Act to the person claiming a
Misstatement/Omission if such Misstatement/Omission was corrected in such Prospectus. Notwithstanding the foregoing, the obligation to indemnify will be individual (several and not joint) to each Holder and will be limited to the net amount of
proceeds (net of payment of all expenses) received by such Holder from the sale of Registrable Securities pursuant to such Registration Statement giving rise to such indemnification obligation. 
  
 (c) Conduct of Indemnification Proceedings. In case any action, claim
or proceeding shall be brought against any Person entitled to indemnification hereunder, such indemnified party shall promptly notify each indemnifying party in writing, and such indemnifying party shall assume the defense thereof, including the
employment of one counsel reasonably satisfactory to such indemnified party and payment of all fees and expenses incurred in connection with the defense thereof. The failure to so notify such indemnifying party shall relieve such indemnifying party
of its indemnification obligations to such indemnified party to the extent that such failure to notify materially prejudiced such indemnifying party but not from any liability that it or they may have to the indemnified party for contribution or
otherwise. Each indemnified party shall have the right to employ separate counsel in such action, claim or proceeding and participate in the defense thereof, but the fees and expenses of such counsel shall be at the expense of each indemnified party
unless: (i) such indemnifying party has agreed to pay such expenses; (ii) such indemnifying party has failed promptly to assume the defense and employ counsel reasonably satisfactory to such indemnified party; or (iii) the named parties to any such
action, claim or proceeding (including any impleaded parties) include both such indemnified party and such indemnifying party or an affiliate or controlling person of such indemnifying party, and such indemnified party shall have been advised in
writing by counsel that either (x) there may be one or more legal defenses available to it which are different from or in addition to those available to such indemnifying party or such affiliate or controlling person or (y) a conflict of interest
may exist if such counsel represents such indemnified party and such indemnifying party or its affiliate or controlling person; provided, however, that such indemnifying party shall not, in connection with any one such action or proceeding or
separate but substantially similar or related actions or proceedings in the same jurisdiction arising out of the same general allegations or circumstances, be responsible hereunder for the fees and expenses of more than one separate firm of
attorneys (in addition to any local counsel), which counsel shall be designated by such indemnified party or, in the event that such indemnified party is a Holder Indemnified Party, by the Holders of a majority of the Registrable Securities included
in the subject Registration Statement. 
  
 No indemnifying party
shall be liable for any settlement effected without its written consent (which consent may not be unreasonably delayed or withheld). Each indemnifying party agrees that it will not, without the indemnified party’s prior written consent, consent
to entry of any judgment or settle or compromise any pending or threatened claim, action or proceeding in respect of which indemnification or contribution may be sought hereunder unless the foregoing contains an unconditional release, in form and
substance reasonably satisfactory to the indemnified parties, of the indemnified parties from all liability and obligation arising therefrom. The indemnifying party’s liability to any such indemnified party hereunder shall not be extinguished
solely because any other indemnified party is not entitled to indemnity hereunder. 
  

 12 

 (d) Survival. The indemnification provided for under this Agreement will (i) remain in full force
and effect regardless of any investigation made by or on behalf of the indemnified party or any officer, director or controlling Person of such indemnified party, (ii) survive the transfer of securities and (iii) survive the termination of this
Agreement. 
  
 (e) Right to Contribution. If the
indemnification provided for in this Section 6 is unavailable to, or insufficient to hold harmless, an indemnified party under Section 6(a) or Section 6(b) above in respect of any Losses referred to in such Sections, then each
applicable indemnifying party shall have an obligation to contribute to the amount paid or payable by such indemnified party as a result of such Losses in such proportion as is appropriate to reflect the relative fault of the Company, on the one
hand, and of the Holder, on the other, in connection with the Misstatement/Omission or violation which resulted in such Losses, taking into account any other relevant equitable considerations. The amount paid or payable by a party as a result of the
Losses referred to above shall be deemed to include, subject to the limitations set forth in Section 6(c) above, any legal or other fees or expenses reasonably incurred by such party in connection with any investigation, lawsuit or legal or
administrative action or proceeding. 
  
 The relative fault of the
Company, on the one hand, and of the Holder, on the other, shall be determined by reference to, among other things, whether the relevant Misstatement/Omission or violation relates to information supplied by the Company or by the Holder and the
parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such Misstatement/Omission or violation. 
  
 The Company and each Holder agree that it would not be just and equitable if contribution pursuant to this Section 6(e) were determined by pro rata
allocation or by any other method of allocation which does not take account of the equitable considerations referred to above. Notwithstanding the provisions of this Section 6(e), a Holder shall not be required to contribute any amount in
excess of the amount by which (i) the amount (net of payment of all expenses) at which the securities that were sold by such Holder and distributed to the public were offered to the public exceeds (ii) the amount of any damages which such Holder has
otherwise been required to pay by reason of such Misstatement/Omission or violation. 
  
 No Person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to contribution from any Person who was not guilty of such fraudulent misrepresentation.

  
 Section 7. Rules 144 and 144A. 
  
 The Company shall timely file the reports required to be filed by it under
the Securities Act and the Exchange Act (including but not limited to the reports under Sections 13 and 15(d) of the Exchange Act referred to in subparagraph (c) of Rule 144 adopted by the Commission under the Securities Act) and the rules and
regulations adopted by the Commission thereunder (or, if the Company is not required to file such reports, it will, upon the request of any Holder, make publicly available other information) and will take such further action as any Holder may
reasonably request, all to the extent required from time to time to enable such Holder to sell Registrable Securities without registration under the Securities Act within the limitation of the exemptions provided by (a) Rule 144 and Rule 144A under
the Securities Act, as such Rules may be amended from time to time, or (b) any similar rule or regulation hereafter adopted by the Commission. 
  

 13 

 Section 8. Underwritten Registrations. 
  
 (a) No Person may participate in any registration hereunder which is
underwritten unless such Person (i) agrees to sell such Person’s securities on the basis provided in any underwriting arrangements approved by the Person or Persons entitled hereunder to approve such arrangements and (ii) completes and executes
all questionnaires, powers of attorney, customary indemnities, underwriting agreements and other documents required under the terms of such underwriting arrangements; provided, that, no Holder included in any underwritten registration shall be
required to make any representations or warranties to the Company or the underwriters other than representations and warranties regarding such Holder and such Holder’s intended method of distribution. 
  
 (b) If any of the Registrable Securities covered by any Registration
Statement are to be sold in an underwritten offering, the investment banker or investment bankers and manager or managers that will manage the offering will be selected by, and the underwriting arrangements with respect thereto will be approved by,
the Company; provided, however, that such investment bankers and managers and underwriting arrangements must be reasonably satisfactory to the Holders of the majority of Registrable Securities to be included in such offering. 
  
 Section 9. Covenants of Holders. 
  
 Each of the Holders hereby agrees (a) to cooperate with the Company and to
furnish to the Company all such information regarding such Holder, its ownership of Registrable Securities and the disposition of such securities in connection with the preparation of the Registration Statement and any filings with any state
securities commissions as the Company may reasonably request, (b) to the extent required by the Securities Act, to deliver or cause delivery of the Prospectus contained in the Registration Statement, any amendment or supplement thereto, to any
purchaser of the Registrable Securities covered by the Registration Statement from the Holder and (c) if requested by the Company, to notify the Company of any sale of Registrable Securities by such Holder. 
  
 Section 10. Miscellaneous. 
  
 (a) No Inconsistent Agreements. The Company will not hereafter enter
into any agreement with respect to its securities that is inconsistent with, adversely effects or violates the rights granted to the Holders in this Agreement; it being understood that the granting of additional demand or piggyback registration
rights with respect to capital stock of the Company shall not be deemed adverse to the rights granted to Holders hereunder so long as they do not (x) reduce the amount of Registrable Securities that any Holder may include in any registration
contemplated in this Agreement or (y) restrict or otherwise limit the exercise by any Holder of its rights hereunder. 
  

 14 

 (b) Remedies. Any Person having rights under any provision of this Agreement will be entitled to
enforce such rights specifically to recover damages caused by reason of any breach of any provision of this Agreement and to exercise all other rights granted by law. The parties hereto agree and acknowledge that money damages may not be an adequate
remedy for any breach of the provisions of this Agreement and hereby agree to waive the defense in any action for specific performance or injunctive relief that a remedy at law would be adequate. Accordingly, any party may in its sole discretion
apply to any court of law or equity of competent jurisdiction (without posting any bond or other security) for specific performance and for other injunctive relief in order to enforce or prevent violation of the provisions of this Agreement.

  
 (c) Amendments and Waivers. Except as otherwise
provided herein, the provisions of this Agreement, including the provisions of this sentence, may be amended, modified, supplemented or waived only upon the prior written consent of the Company and Holders of a majority of the outstanding
Registrable Securities. 
  
 (d) Successors and Assigns.
This Agreement shall be binding upon and inure to the benefit of the parties hereto and their respective successors and assigns. The Holders may assign all rights under this agreement; provided, however, that no Holder may transfer or assign its
rights hereunder unless such transferring Holder shall, prior to any such transfer, obtain from the transferee a joinder agreement in a form reasonably satisfactory to the Company and deliver a copy of such joinder agreement to the Company and to
the Holders. Only persons (other than the initial Stockholder hereto) that execute a joinder agreement shall be deemed to be Holders (“Permitted Transferee”). The Company shall be given written notice by the transferring
Holder at the time of the transfer stating the name and address of the transferee and identifying the Registrable Securities transferred, provided, that, failure to give such notice shall not affect the validity of such transfer or assignment.

  
 (e) Termination of Registration Rights. The rights of
any Holder to cause the Company to register Registrable Securities under this Agreement shall terminate with respect to such Holder as soon as such Holder is legally able to dispose of all of its Registrable Securities in one transaction pursuant to
Rule 144 under the Securities Act. 
  
 (f) Severability. In
the event that any one or more of the provisions contained herein, or the application thereof in any circumstances, is held invalid, illegal or unenforceable in any respect for any reason, the validity, legality and enforceability of any such
provision in every other respect and of the remaining provisions hereof shall not be in any way impaired or affected, it being intended that the rights and privileges of the parties hereto shall be enforceable to the fullest extent permitted by law.

  
 (g) Counterparts. This Agreement may be executed in any
number of counterparts, any one of which need not contain the signatures of more than one party, but each of which when so executed shall be deemed to be an original and all such counterparts taken together shall constitute one and the same
Agreement. 
  
 (h) Descriptive Headings: Interpretation.
The descriptive headings of this Agreement are inserted for convenience of reference only and shall not limit or otherwise affect the meaning hereof. The use of the word “including” in this Agreement shall be by way of example rather than
by limitation. 
  

 15 

 (i) Notices. All notices, requests and other communications provided for or permitted to be given
under this Agreement must be in writing and shall be given by personal delivery, by certified or registered United States mail (postage prepaid, return receipt requested), by a nationally recognized overnight delivery service for next day delivery,
or by facsimile transmission, as follows (or to such other address as any party may give in a notice given in accordance with the provisions hereof): 
  
 If to the Company: 
  
 Bronco Drilling Company, Inc. 
 14313 North May Avenue 
 Suite 100 
 Oklahoma City, OK 73134 
 Attention: Chief Executive Officer 
 Facsimile: (405) 848-8816 
  
 with a copy (which shall not constitute notice) to: 
  
 Akin Gump Strauss Hauer & Feld LLP 
 1700 Pacific Avenue 
 Suite 4100 
 Dallas, TX 75201 
 Attention: Seth R. Molay, P.C. 
 Facsimile: (214) 969-4343 
  
 If
to the Stockholder: 
  
 Wexford Capital LLC

 411 West Putnam Avenue 
 Greenwich, CT 06830 
 Attention: Arthur Amron 
 Facsimile: (203) 862-7312 
  
 All notices, requests or other communications will be effective and deemed given only as follows: (i) if given by personal delivery, upon such personal delivery, (ii) if
sent by certified or registered mail, on the fifth business day after being deposited in the United States mail, (iii) if sent for next day delivery by overnight delivery service, on the date of delivery as confirmed by written confirmation of
delivery, (iv) if sent by facsimile, upon the transmitter’s confirmation of receipt of such facsimile transmission, except that if such confirmation is received after 5:00 p.m. (in the recipient’s time zone) on a business day, or is
received on a day that is not a business day, then such notice, request or communication will not be deemed effective or given until the next succeeding business day. Notices, requests and other communications sent in any other manner, including by
electronic mail, will not be effective. 
  

 16 

 (j) GOVERNING LAW; SUBMISSION TO JURISDICTION. THIS AGREEMENT SHALL BE DEEMED TO BE MADE IN AND IN
ALL RESPECTS SHALL BE INTERPRETED, CONSTRUED AND GOVERNED BY AND IN ACCORDANCE WITH THE LAW OF THE STATE OF DELAWARE WITHOUT REGARD TO THE CONFLICT OF LAW PRINCIPLES THEREOF. The parties hereby irrevocably submit to the jurisdiction of any federal
court located in the State of Delaware or any Delaware state court solely in respect of the interpretation and enforcement of the provisions of this Agreement and of the documents referred to in this Agreement, and in respect of the transactions
contemplated hereby, and hereby waive, and agree not to assert, as a defense in any action, suit or proceeding for the interpretation or enforcement hereof or of any such document, that it is not subject thereto or that such action, suit or
proceeding may not be brought or is not maintainable in said courts or that the venue thereof may not be appropriate or that this Agreement or any such document may not be enforced in or by such courts, and the parties hereto irrevocably agree that
all claims with respect to such action or proceeding shall be heard and determined in such a Delaware state or federal court. The parties hereby consent to and grant any such court jurisdiction over the person of such parties and over the subject
matter of such dispute and agree that mailing of process or other papers in connection with any such action or proceeding in the manner provided in the Section on notices above or in such other manner as may be permitted by law shall be valid and
sufficient service thereof. 
  
 EACH PARTY ACKNOWLEDGES AND AGREES
THAT ANY CONTROVERSY WHICH MAY ARISE UNDER THIS AGREEMENT IS LIKELY TO INVOLVE COMPLICATED AND DIFFICULT ISSUES, AND THEREFORE EACH SUCH PARTY HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES ANY RIGHT SUCH PARTY MAY HAVE TO A TRIAL BY JURY IN RESPECT
OF ANY LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS AGREEMENT, OR THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT. EACH PARTY CERTIFIES AND ACKNOWLEDGES THAT (I) NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY HAS
REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER, (II) EACH PARTY UNDERSTANDS AND HAS CONSIDERED THE IMPLICATIONS OF THIS WAIVER, (III) EACH PARTY MAKES THIS
WAIVER VOLUNTARILY, AND (IV) EACH PARTY HAS BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION. 
  
 (k) Entire Agreement. This Agreement is intended by the parties as a final expression of their agreement and intended
to be a complete and exclusive statement of the agreement and understanding of the parties hereto in respect of the subject matter contained herein. This Agreement supersedes all prior agreements and understandings between the parties with respect
to such subject matter. 
  
 [Signature Page Follows]

  

 17 

 IN WITNESS WHEREOF the parties hereto have or have caused this Registration Rights Agreement to be duly
executed as of the date first above written 
  

					
	THE COMPANY:
	
	 BRONCO DRILLING COMPANY, INC.

		
	 By:
	 	  

	 	 	 D. Frank Harrison

	 	 	 Chief Executive Officer

	
	THE STOCKHOLDER:
	
	 BRONCO DRILLING HOLDINGS, L.L.C.

		
	 By:
	 	 WEXFORD CAPITAL, LLC

	 	 	 its Manager

			
	 	 	 By:
	 	  

	 	 	 Name:
	 	  

	 	 	 Title:

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