Document:

Form of Incentive Stock Option Agreement

 Exhibit 10.15 
 INCENTIVE STOCK OPTION AGREEMENT 
 PURSUANT TO THE 

2011 INCENTIVE COMPENSATION PLAN 
 * * * * * 

Participant:                       
                                  

Grant
Date:                                        
                 
 Per Share Exercise Price:
$             1 
 Number of Shares subject to this
Option:                                 

* * * * * 
 THIS
INCENTIVE STOCK OPTION AWARD AGREEMENT (this “Agreement”), dated as of the Grant Date specified above, is entered into by and between U.S. Silica Holdings, Inc., a corporation organized in the State of Delaware (the
“Company”), and the Participant specified above, pursuant to the 2011 Incentive Compensation Plan, as in effect and as amended from time to time (the “Plan”), which is administered by the Committee; and 

WHEREAS, it has been determined under the Plan that it would be in the best interests of the Company to grant the Incentive Stock Option
provided for herein to the Participant. 
 NOW, THEREFORE, in consideration of the mutual covenants and promises hereinafter set
forth and for other good and valuable consideration, the parties hereto hereby mutually covenant and agree as follows: 
 1. Incorporation By Reference; Plan Document Receipt. This Agreement is subject in all respects to the terms and provisions of the Plan (including, without limitation, any amendments thereto
adopted at any time and from time to time unless such amendments are expressly intended not to apply to the Award provided hereunder), all of which terms and provisions are made a part of and incorporated in this Agreement as if they were each
expressly set forth herein. Any capitalized term not defined in this Agreement shall have the same meaning as is ascribed thereto in the Plan. The Participant hereby acknowledges receipt of a true copy of the Plan and that the Participant has read
the Plan carefully and fully understands its content. In the event of any conflict between the terms of this Agreement and the terms of the Plan, the terms of the Plan shall control. 

 

	1 	Note: The Per Share Exercise Price of an Incentive Stock Option granted to a Ten Percent Stockholder may not be less than 110% of the Fair Market Value of the
Common Stock on the Grant Date. 

 2. Grant of Option. The Company hereby grants to the
Participant, as of the Grant Date specified above, an Incentive Stock Option (this “Option”) to acquire from the Company at the Per Share Exercise Price specified above, the aggregate number of shares of Common Stock specified above
(the “Option Shares”). Except as otherwise provided by the Plan, the Participant agrees and understands that nothing contained in this Agreement provides, or is intended to provide, the Participant with any protection against
potential future dilution of the Participant’s interest in the Company for any reason. The Participant shall have no rights as a stockholder with respect to any shares of Common Stock covered by the Option unless and until the Participant has
become the holder of record of such shares, and no adjustments shall be made for dividends in cash or other property, distributions or other rights in respect of any such shares, except as otherwise specifically provided for in the Plan or this
Agreement. 
 3. Tax Matters. The Option granted hereunder is intended to qualify as an
“incentive stock option” under Section 422 of the Code. Notwithstanding the foregoing, the Option will not qualify as an “incentive stock option,” among other events, (a) if the Participant disposes of the Option Shares
at any time during the two-year period following the date of this Agreement or the one-year period following the date of any exercise of the Option; (b) except in the event of the Participant’s death or Disability, if the Participant is
not employed by the Company, a Parent or a Subsidiary at all times during the period beginning on the date of this Agreement and ending on the day that is three months before the date of any exercise of the Option; or (c) to the extent that the
aggregate fair market value of the Common Stock subject to “incentive stock options” held by the Participant which become exercisable for the first time in any calendar year (under all plans of the Company, a Parent or a Subsidiary)
exceeds $100,000. For purposes of clause (c) above, the “fair market value” of the Common Stock shall be determined as of the Grant Date. To the extent that the Option does not qualify as an “incentive stock option,” it
shall not affect the validity of the Option and shall constitute a separate non-qualified stock option. In the event that the Participant disposes of the Option Shares within either two (2) years following the Grant Date or one year following
the date of exercise of the Option, the Participant must deliver to the Company, within seven (7) days following such disposition, a written notice specifying the date on which such shares were disposed of, the number of shares so disposed,
and, if such disposition was by a sale or exchange, the amount of consideration received. 
 4. Vesting and
Exercise. 
 (a) Vesting. Subject to the provisions of Sections 4(b) through 4(d) hereof, the
Option shall vest and become exercisable as follows, provided that the Participant has not incurred a Termination prior to each such vesting date: 
  

			
	 Vesting Date
	  	Number of Shares
	 [First anniversary of the Grant Date]
	  	[25%]
	 [Second anniversary of the Grant Date]
	  	[50%]
	 [Third anniversary of the Grant Date]
	  	[75%]
	 [Fourth anniversary of the Grant Date]
	  	[100%]

 There shall be no proportionate or partial vesting in the periods prior to each vesting date and all vesting shall occur
only on the appropriate vesting date, subject to the Participant’s continued service with the Company or any of its Subsidiaries on each applicable vesting date. Upon expiration of the Option, the Option shall be cancelled and no longer
exercisable. 

  
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 (b) Committee Discretion to Accelerate Vesting. Notwithstanding the
foregoing, the Committee may, in its sole discretion, provide for accelerated vesting of the Option at any time and for any reason. 
 (c) [Acceleration Upon Change in Control. In the event of a Change in Control of the Company where the consideration paid therefor is all cash (and excluding the cancellation of
indebtedness, set-off or other similar deemed payment), the Option hereunder shall become fully vested immediately prior to the occurrence thereof so long as the Participant has not incurred a Termination prior to such date.] 

(d) Effect of Detrimental Activity. The provisions of Section 6.4(c) of the Plan regarding Detrimental
Activity shall apply to the Option. 
 (e) Expiration. Unless earlier terminated in accordance with the
terms and provisions of the Plan and/or this Agreement, all portions of the Option (whether vested or not vested) shall expire and shall no longer be exercisable after the expiration of ten (10) years from the Grant Date.2 

5. Termination. Subject to the terms of the Plan and this Agreement, the Option, to the extent vested at the
time of the Participant’s Termination, shall remain exercisable as follows: 
 (a) Termination due to
Death or Disability. In the event of the Participant’s Termination by reason of death or Disability, the vested portion of the Option shall remain exercisable until the earlier of (i) one (1) year from the date of such
Termination, and (ii) the expiration of the stated term of the Option pursuant to Section 4(e) hereof. 

(b) Termination Without Cause. In the event of the Participant’s involuntary Termination by the Company
without Cause, the vested portion of the Option shall remain exercisable until the earlier of (i) ninety (90) days from the date of such Termination, and (ii) the expiration of the stated term of the Option pursuant to
Section 4(e) hereof. 
 (c) Voluntary Termination. In the event of the Participant’s voluntary
Termination, the vested portion of the Option shall remain exercisable until the earlier of (i) ninety (90) days from the date of such Termination, and (ii) the expiration of the stated term of the Option pursuant to Section 4(e)
hereof. 
 (d) Termination for Cause. In the event of the Participant’s Termination for Cause, the
Participant’s entire Option (whether or not vested) shall terminate and expire upon such Termination except to the extent that the Committee provides otherwise in writing. 

 

	2 	Note: The term of an Incentive Stock Option granted to a Ten Percent Stockholder may not exceed five years. 

  
 3 

 (e) Treatment of Unvested Options upon Termination. Any portion of
the Option that is not vested as of the date of the Participant’s Termination for any reason shall terminate and expire as of the date of such Termination. 
 6. Method of Exercise and Payment. Subject to Section 9 hereof, to the extent that the Option has become vested and exercisable with respect to a number of shares of Common Stock as
provided herein, the Option may thereafter be exercised by the Participant, in whole or in part, at any time or from time to time prior to the expiration of the Option as provided herein and in accordance with Sections 6.4(c) and 6.4(d) of the Plan,
including, without limitation, by the filing of any written form of exercise notice as may be required by the Committee and payment in full of the Per Share Exercise Price specified above multiplied by the number of shares of Common Stock underlying
the portion of the Option exercised. 
 7. Non-Transferability. The Option, and any rights and
interests with respect thereto, issued under this Agreement and the Plan shall not be sold, exchanged, transferred, assigned or otherwise disposed of in any way by the Participant (or any beneficiary(ies) of the Participant), other than by
testamentary disposition by the Participant or the laws of descent and distribution. Any attempt to sell, exchange, transfer, assign, pledge, encumber or otherwise dispose of or hypothecate in any way the Option, or the levy of any execution,
attachment or similar legal process upon the Option, contrary to the terms and provisions of this Agreement and/or the Plan shall be null and void and without legal force or effect. 

8. Governing Law. All questions concerning the construction, validity and interpretation of this Agreement
shall be governed by, and construed in accordance with, the laws of the State of Delaware, without regard to the choice of law principles thereof. 
 9. Withholding of Tax. The Company shall have the power and the right to deduct or withhold, or require the Participant to remit to the Company, an amount sufficient to satisfy any federal,
state, local and foreign taxes of any kind (including, but not limited to, the Participant’s FICA and SDI obligations) which the Company, in its sole discretion, deems necessary to be withheld or remitted to comply with the Code and/or any
other applicable law, rule or regulation with respect to the Option and, if the Participant fails to do so, the Company may otherwise refuse to issue or transfer any shares of Common Stock otherwise required to be issued pursuant to this Agreement.
Any statutorily required withholding obligation with regard to the Participant may be satisfied by reducing the amount of cash or shares of Common Stock otherwise deliverable upon exercise of the Option. 

10. Entire Agreement; Amendment. This Agreement, together with the Plan, contains the entire agreement
between the parties hereto with respect to the subject matter contained herein, and supersedes all prior agreements or prior understandings, whether written or oral, between the parties relating to such subject matter. The Committee shall have the
right, in its sole discretion, to modify or amend this Agreement from time to time in accordance with and as provided in the Plan. This Agreement may also be modified or amended by a writing signed by both the Company and the Participant. The
Company shall give written notice to the Participant of any such modification or amendment of this Agreement as soon as practicable after the adoption thereof. 

  
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 11. Notices. Any notice hereunder by the Participant shall be
given to the Company in writing and such notice shall be deemed duly given only upon receipt thereof by the General Counsel of the Company. Any notice hereunder by the Company shall be given to the Participant in writing and such notice shall be
deemed duly given only upon receipt thereof at such address as the Participant may have on file with the Company. 
 12. No Right to Employment. Any questions as to whether and when there has been a Termination and the cause of such Termination shall be determined in the sole discretion of the Committee.
Nothing in this Agreement shall interfere with or limit in any way the right of the Company, its Subsidiaries or its Affiliates to terminate the Participant’s employment or service at any time, for any reason and with or without cause.

 13. Transfer of Personal Data. The Participant authorizes, agrees and unambiguously
consents to the transmission by the Company (or any Subsidiary) of any personal data information related to the Option awarded under this Agreement for legitimate business purposes (including, without limitation, the administration of the Plan).
This authorization and consent is freely given by the Participant. 
 14. Compliance with Laws. The
issuance of the Option (and the Option Shares upon exercise of the Option) pursuant to this Agreement shall be subject to, and shall comply with, any applicable requirements of any foreign and U.S. federal and state securities laws, rules and
regulations (including, without limitation, the provisions of the Securities Act, the Exchange Act and in each case any respective rules and regulations promulgated thereunder) and any other law or regulation applicable thereto. The Company shall
not be obligated to issue the Option or any of the Option Shares pursuant to this Agreement if any such issuance would violate any such requirements. 
 15. Section 409A. Notwithstanding anything herein or in the Plan to the contrary, the Option is intended to be exempt from the applicable requirements of Section 409A of the Code
and shall be limited, construed and interpreted in accordance with such intent. 
 16. Binding Agreement;
Assignment. This Agreement shall inure to the benefit of, be binding upon, and be enforceable by the Company and its successors and assigns. The Participant shall not assign (except in accordance with Section 7 hereof) any part of this
Agreement without the prior express written consent of the Company. 
 17. Headings. The titles and
headings of the various sections of this Agreement have been inserted for convenience of reference only and shall not be deemed to be a part of this Agreement. 
 18. Counterparts. This Agreement may be executed in one or more counterparts, each of which shall be deemed to be an original, but all of which shall constitute one and the same instrument.

 19. Further Assurances. Each party hereto shall do and perform (or shall cause to be done and
performed) all such further acts and shall execute and deliver all such other agreements, certificates, instruments and documents as either party hereto reasonably may request in order to carry out the intent and accomplish the purposes of this
Agreement and the Plan and the consummation of the transactions contemplated thereunder. 

  
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 20. Severability. The invalidity or unenforceability of any
provisions of this Agreement in any jurisdiction shall not affect the validity, legality or enforceability of the remainder of this Agreement in such jurisdiction or the validity, legality or enforceability of any provision of this Agreement in any
other jurisdiction, it being intended that all rights and obligations of the parties hereunder shall be enforceable to the fullest extent permitted by law. 
 21. Acquired Rights. The Participant acknowledges and agrees that: (a) the Company may terminate or amend the Plan at any time; (b) the award of the Option made under this
Agreement is completely independent of any other award or grant and is made at the sole discretion of the Company; (c) no past grants or awards (including, without limitation, the Option awarded hereunder) give the Participant any right to any
grants or awards in the future whatsoever; and (d) any benefits granted under this Agreement are not part of the Participant’s ordinary salary, and shall not be considered as part of such salary in the event of severance, redundancy or
resignation. 
 [Remainder of Page Intentionally Left Blank] 

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

			
	U.S. SILICA HOLDINGS, INC.
		
	By:	 	 
		
	Name:	 	 
		
	Title:	 	 

  
  

					
	PARTICIPANT
	
	 
		
	Name:	 	 
	
	Social Security Number:________________________

  
 7Form of Restricted Stock Agreement

 Exhibit 10.16 
 RESTRICTED STOCK AGREEMENT 
 PURSUANT TO THE 

2011 INCENTIVE COMPENSATION PLAN 
 * * * * * 
 Participant:
                                        

 Grant Date:
                                        

 Number of Shares of 

Restricted Stock Granted:
                                        

 * * * * * 
 THIS RESTRICTED STOCK AWARD AGREEMENT (this “Agreement”), dated as of the Grant Date specified above, is entered into by and between U.S. Silica Holdings, Inc., a corporation organized in
the State of Delaware (the “Company”), and the Participant specified above, pursuant to the 2011 Incentive Compensation Plan, as in effect and as amended from time to time (the “Plan”), which is administered by the
Committee; and 
 WHEREAS, it has been determined under the Plan that it would be in the best interests of the Company to grant
the shares of Restricted Stock provided herein to the Participant. 
 NOW, THEREFORE, in consideration of the mutual covenants
and promises hereinafter set forth and for other good and valuable consideration, the parties hereto hereby mutually covenant and agree as follows: 
 1. Incorporation By Reference; Plan Document Receipt. This Agreement is subject in all respects to the terms and provisions of the Plan (including, without limitation, any amendments thereto
adopted at any time and from time to time unless such amendments are expressly intended not to apply to the Award provided hereunder), all of which terms and provisions are made a part of and incorporated in this Agreement as if they were each
expressly set forth herein. Any capitalized term not defined in this Agreement shall have the same meaning as is ascribed thereto in the Plan. The Participant hereby acknowledges receipt of a true copy of the Plan and that the Participant has read
the Plan carefully and fully understands its content. In the event of any conflict between the terms of this Agreement and the terms of the Plan, the terms of the Plan shall control. 

2. Grant of Restricted Stock Award. The Company hereby grants to the Participant, as of the Grant Date
specified above, the number of shares of Restricted Stock specified above. Except as otherwise provided by the Plan, the Participant agrees and understands that nothing contained in this Agreement provides, or is intended to provide, the Participant
with any protection against potential future dilution of the Participant’s interest in the Company for any reason, and no adjustments shall be made for dividends in cash or other 

 
property, distributions or other rights in respect of any such shares, except as otherwise specifically provided for in the Plan or this Agreement. Subject to Section 5 hereof, the
Participant shall not have the rights of a stockholder in respect of the shares underlying this Award until such shares are delivered to the Participant in accordance with Section 4 hereof. 

3. Vesting. 
 (a) The Restricted Stock subject to this grant shall become unrestricted and vested as follows, provided that the Participant has not incurred a Termination prior to each such vesting date: 

 

			
	 Vesting Date
	  	Number of Shares
	 [First anniversary of the Grant Date]
	  	[25%]
	 [Second anniversary of the Grant Date]
	  	[50%]
	 [Third anniversary of the Grant Date]
	  	[75%]
	 [Fourth anniversary of the Grant Date]
	  	[100%]

 There shall be no proportionate or partial vesting in the periods prior to each vesting date and all vesting shall occur
only on the appropriate vesting date, subject to the Participant’s continued service with the Company or any of its Subsidiaries on each applicable vesting date. 

(b) Committee Discretion to Accelerate Vesting. Notwithstanding the foregoing, the Committee may, in its sole
discretion, provide for accelerated vesting of the Restricted Stock at any time and for any reason. 
 (c)
[Acceleration Upon Change in Control. In the event of a Change in Control of the Company where the consideration paid therefor is all cash (and excluding the cancellation of indebtedness, set-off or other similar deemed payment), the
Restricted Stock hereunder shall become fully vested immediately prior to the occurrence thereof so long as the Participant has not incurred a Termination prior to such date.] 

(d) Effect of Detrimental Activity. The provisions of Section 8.1 of the Plan regarding Detrimental Activity
shall apply to the Restricted Stock. 
 (e) Forfeiture. Subject to the Committee’s discretion to
accelerate vesting hereunder, all unvested shares of Restricted Stock shall be immediately forfeited upon the Participant’s Termination for any reason. 
 4. Period of Restriction; Delivery of Unrestricted Shares. During the Period of Restriction, the Restricted Stock shall bear a legend as described in Section 8.2(c) of the Plan. When
shares of Restricted Stock awarded by this Agreement become vested, the Participant shall be entitled to receive unrestricted shares and if the Participant’s stock certificates contain legends restricting the transfer of such shares, the
Participant shall be entitled to receive new stock certificates free of such legends (except any legends requiring compliance with securities laws). 

  
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 5. Dividends and Other Distributions; Voting.
Participants holding Restricted Stock shall be entitled to receive all dividends and other distributions paid with respect to such shares, provided that any such dividends or other distributions will be subject to the same vesting requirements
as the underlying Restricted Stock and shall be paid at the time the Restricted Stock becomes vested pursuant to Section 3 hereof. If any dividends or distributions are paid in shares, the shares shall be deposited with the Company and shall be
subject to the same restrictions on transferability and forfeitability as the Restricted Stock with respect to which they were paid. The Participant may exercise full voting rights with respect to the Restricted Stock granted hereunder. 

6. Non-Transferability. The shares of Restricted Stock, and any rights and interests with respect thereto,
issued under this Agreement and the Plan shall not, prior to vesting, be sold, exchanged, transferred, assigned or otherwise disposed of in any way by the Participant (or any beneficiary of the Participant), other than by testamentary disposition by
the Participant or the laws of descent and distribution. Any attempt to sell, exchange, transfer, assign, pledge, encumber or otherwise dispose of or hypothecate in any way any of the Restricted Stock, or the levy of any execution, attachment or
similar legal process upon the Restricted Stock, contrary to the terms and provisions of this Agreement and/or the Plan shall be null and void and without legal force or effect. 

7. Governing Law. All questions concerning the construction, validity and interpretation of this Agreement
shall be governed by, and construed in accordance with, the laws of the State of Delaware, without regard to the choice of law principles thereof. 
 8. Withholding of Tax. The Company shall have the power and the right to deduct or withhold, or require the Participant to remit to the Company, an amount sufficient to satisfy any federal,
state, local and foreign taxes of any kind (including, but not limited to, the Participant’s FICA and SDI obligations) which the Company, in its sole discretion, deems necessary to be withheld or remitted to comply with the Code and/or any
other applicable law, rule or regulation with respect to the Restricted Stock and, if the Participant fails to do so, the Company may otherwise refuse to issue or transfer any shares of Common Stock otherwise required to be issued pursuant to this
Agreement. Any statutorily required withholding obligation with regard to the Participant may be satisfied by reducing the amount of cash or shares of Common Stock otherwise deliverable to the Participant hereunder. 

9. Section 83(b). If the Participant properly elects (as required by Section 83(b) of the Code)
within thirty (30) days after the issuance of the Restricted Stock to include in gross income for federal income tax purposes in the year of issuance the Fair Market Value of such shares of Restricted Stock, the Participant shall pay to the
Company or make arrangements satisfactory to the Company to pay to the Company upon such election, any federal, state or local taxes required to be withheld with respect to the Restricted Stock. If the Participant shall fail to make such payment,
the Company shall, to the extent permitted by law, have the right to deduct from any payment of any kind otherwise due to the Participant any federal, state or local taxes of any kind required by law to be withheld with respect to the Restricted
Stock, as well as the rights set forth in Section 8 hereof. The Participant acknowledges that it is the Participant’s sole responsibility, and not the Company’s, to file timely and properly the election under Section 83(b) of the
Code and any corresponding provisions of state tax laws if the Participant elects to make such election, and the Participant agrees to timely provide the Company with a copy of any such election. 

  
 3 

 10. Legend. All certificates representing the Restricted Stock
shall have endorsed thereon the legend set forth in Section 8.2(c) of the Plan. Notwithstanding the foregoing, in no event shall the Company be obligated to deliver to the Participant a certificate representing the Restricted Stock prior to the
vesting dates set forth above. 
 11. Securities Representations. The shares of Restricted Stock
are being issued to the Participant and this Agreement is being made by the Company in reliance upon the following express representations and warranties of the Participant. The Participant acknowledges, represents and warrants that: 

(a) The Participant has been advised that the Participant may be an “affiliate” within the meaning of Rule 144
under the Securities Act and in this connection the Company is relying in part on the Participant’s representations set forth in this Section 11. 
 (b) If the Participant is deemed an affiliate within the meaning of Rule 144 of the Securities Act, the shares of Restricted Stock must be held indefinitely unless an exemption from any applicable resale
restrictions is available or the Company files an additional registration statement (or a “re-offer prospectus”) with regard to the shares of Restricted Stock and the Company is under no obligation to register the shares of Restricted
Stock (or to file a “re-offer prospectus”). 
 (c) If the Participant is deemed an affiliate within the
meaning of Rule 144 of the Securities Act, the Participant understands that (i) the exemption from registration under Rule 144 will not be available unless (A) a public trading market then exists for the Common Stock of the Company,
(B) adequate information concerning the Company is then available to the public, and (C) other terms and conditions of Rule 144 or any exemption therefrom are complied with, and (ii) any sale of the shares of vested Restricted Stock
hereunder may be made only in limited amounts in accordance with the terms and conditions of Rule 144 or any exemption therefrom. 
 12. Entire Agreement; Amendment. This Agreement, together with the Plan, contains the entire agreement between the parties hereto with respect to the subject matter contained herein, and
supersedes all prior agreements or prior understandings, whether written or oral, between the parties relating to such subject matter. The Committee shall have the right, in its sole discretion, to modify or amend this Agreement from time to time in
accordance with and as provided in the Plan. This Agreement may also be modified or amended by a writing signed by both the Company and the Participant. The Company shall give written notice to the Participant of any such modification or amendment
of this Agreement as soon as practicable after the adoption thereof. 
 13. Notices. Any
notice hereunder by the Participant shall be given to the Company in writing and such notice shall be deemed duly given only upon receipt thereof by the General Counsel of the Company. Any notice hereunder by the Company shall be given to the
Participant in writing and such notice shall be deemed duly given only upon receipt thereof at such address as the Participant may have on file with the Company. 

  
 4 

 14. Acceptance. As required by Section 8.2 of the Plan,
the Participant shall forfeit the Restricted Stock if the Participant does not execute this Agreement within a period of sixty (60) days from the date that the Participant receives this Agreement (or such other period as the Committee shall
provide). 
 15. No Right to Employment. Any questions as to whether and when there has been a
Termination and the cause of such Termination shall be determined in the sole discretion of the Committee. Nothing in this Agreement shall interfere with or limit in any way the right of the Company, its Subsidiaries or Affiliates to terminate the
Participant’s employment or service at any time, for any reason and with or without Cause. 
 16.
Transfer of Personal Data. The Participant authorizes, agrees and unambiguously consents to the transmission by the Company (or any Subsidiary) of any personal data information related to the Restricted Stock awarded under this
Agreement for legitimate business purposes (including, without limitation, the administration of the Plan). This authorization and consent is freely given by the Participant. 

17. Compliance with Laws. The issuance of the Restricted Stock or unrestricted shares pursuant to this
Agreement shall be subject to, and shall comply with, any applicable requirements of any foreign and U.S. federal and state securities laws, rules and regulations (including, without limitation, the provisions of the Securities Act, the Exchange Act
and in each case any respective rules and regulations promulgated thereunder) and any other law or regulation applicable thereto. The Company shall not be obligated to issue the Restricted Stock or any of the shares pursuant to this Agreement if any
such issuance would violate any such requirements. 
 18. Section 409A. Notwithstanding
anything herein or in the Plan to the contrary, the shares of Restricted Stock are intended to be exempt from the applicable requirements of Section 409A of the Code and shall be limited, construed and interpreted in accordance with such
intent. 
 19. Binding Agreement; Assignment. This Agreement shall inure to the benefit of, be
binding upon, and be enforceable by the Company and its successors and assigns. The Participant shall not assign (except in accordance with Section 6 hereof) any part of this Agreement without the prior express written consent of the Company.

 20. Headings. The titles and headings of the various sections of this Agreement have been
inserted for convenience of reference only and shall not be deemed to be a part of this Agreement. 
 21.
Counterparts. This Agreement may be executed in one or more counterparts, each of which shall be deemed to be an original, but all of which shall constitute one and the same instrument. 

22. Further Assurances. Each party hereto shall do and perform (or shall cause to be done and performed) all
such further acts and shall execute and deliver all such other agreements, certificates, instruments and documents as either party hereto reasonably may request in order to carry out the intent and accomplish the purposes of this Agreement and the
Plan and the consummation of the transactions contemplated thereunder. 

  
 5 

 23. Severability. The invalidity or unenforceability of any
provisions of this Agreement in any jurisdiction shall not affect the validity, legality or enforceability of the remainder of this Agreement in such jurisdiction or the validity, legality or enforceability of any provision of this Agreement in any
other jurisdiction, it being intended that all rights and obligations of the parties hereunder shall be enforceable to the fullest extent permitted by law. 
 24. Acquired Rights. The Participant acknowledges and agrees that: (a) the Company may terminate or amend the Plan at any time; (b) the award of Restricted Stock made under this
Agreement is completely independent of any other award or grant and is made at the sole discretion of the Company; (c) no past grants or awards (including, without limitation, the Restricted Stock awarded hereunder) give the Participant any
right to any grants or awards in the future whatsoever; and (d) any benefits granted under this Agreement are not part of the Participant’s ordinary salary, and shall not be considered as part of such salary in the event of severance,
redundancy or resignation. 
 * * * * * 

  
 6 

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

					
	U.S. SILICA HOLDINGS, INC.
		
	By:	 	 
		
	Name:	 	 
		
	Title:	 	 
	
	PARTICIPANT
	
	 
		
	Name:	 	 
	
	Social Security Number:                      
                         

  
 7

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