Document:

Form of Registration Rights Agreement

 EXHIBIT 4.2 
 REGISTRATION RIGHTS AGREEMENT 
 This REGISTRATION RIGHTS AGREEMENT
(this “Agreement”) is made as of            , by and between U.S. Silica Holdings, Inc. (formerly known as GGC USS Holdings, Inc.), a Delaware corporation (the
“Company”), and GGC USS Holdings, LLC, a Delaware limited liability company (the “Parent”). 

WHEREAS, reference is made to that certain Registration Rights Agreement, dated as of November 25, 2008, by and among the Parent and
certain other persons party thereto (the “Parent Registration Rights Agreement”); 
 WHEREAS, the Company was
created in furtherance of an intended initial public offering, it being intended that certain of the Company’s equity will be offered to the public in such initial public offering (the “IPO”); 

WHEREAS, as of the date hereof, the Parent owns all of the equity interests of the Company; 

WHEREAS, the parties hereto desire to provide the registration rights set forth in this Agreement with respect to certain of the
Company’s equity interests; and 
 WHEREAS, this Agreement shall become effective upon the consummation of the IPO.

 NOW, THEREFORE, in consideration of the mutual covenants contained herein and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the parties to this Agreement hereby agree as follows: 
 Unless
otherwise provided in this Agreement, capitalized terms used herein shall have the meanings set forth in Section 10 hereof. 
 1. Demand Registrations. 
 (a) At any time, the Parent may request
registration under the Securities Act of all or any portion of its Registrable Securities (A) on Form S-1 or any similar long form registration statement (“Long Form Registrations”), (B) on Form S-3 or any
similar short form registration statement (“Short Form Registrations”) if the Company is eligible to use any such short form or (C) on any applicable “short form” pursuant to Rule 415 (or any successor rule)
promulgated under the Securities Act (a “415 Registration”) if the Company is eligible to use any such short form. All registrations requested pursuant to this Section 1(a) are referred to herein as “Demand
Registrations.” Each request for a Demand Registration shall specify the approximate number of Registrable Securities requested to be registered, the anticipated per share price range for such offering and the intended method of
distribution. Within ten (10) days after receipt of any such request, the Company shall include in such registration (and in all related registrations and qualifications under state blue sky laws or in compliance with other registration
requirements and in any related underwriting) all Registrable Securities with respect to which the Company has received written requests from the Parent for inclusion therein. 

 (b) Long Form Registrations. The Parent shall be entitled to request four Long Form
Registrations in which the Company shall pay all Registration Expenses. A registration shall not count as one of the permitted Long Form Registrations until it has become effective and unless the Parent is able to register and sell at least
nine-tenths (90%) of the Registrable Securities requested to be included in such registration. The Company will pay all Registration Expenses in connection with any registration initiated as a Long Form Registration whether or not it becomes
effective and whether or not such registration has counted as one of the permitted Long Form Registrations. 
 (c) Short Form
Registrations. In addition to the Long Form Registrations provided pursuant to Section 1(b), the Parent shall be entitled to request an unlimited number of Short Form Registrations in which the Company shall pay all Registration
Expenses. The Company will pay all Registration Expenses in connection with any registration initiated as a Short Form Registration whether or not it becomes effective. Demand Registrations shall be Short Form Registrations whenever the Company is
permitted to use any applicable short form and if the managing underwriters (if any) agree to the use of a Short Form Registration. The Company shall use its best efforts to make Short Form Registrations on Form S-3 available for the sale of
Registrable Securities. 
 (d) 415 Registrations. 

(i) In addition to the Long Form Registrations provided pursuant to Section 1(b) and the Short Form
Registrations provided pursuant to Section 1(c), the Parent shall be entitled to request an unlimited number of 415 Registrations in which the Company shall pay all Registration Expenses. The Company will pay all Registration Expenses in
connection with any registration initiated as a 415 Registration whether or not it becomes effective. In the event that the Company files a shelf registration statement pursuant to a request for a 415 Registration and such registration becomes
effective (such registration statement, a “Shelf Registration Statement”), the Parent shall have the right at any time or from time to time to elect to sell pursuant to an offering (including an underwritten offering) Registrable
Securities available for sale pursuant to such registration statement (“Shelf Registrable Securities”), so long as the Shelf Registration Statement remains in effect. The Parent shall make such election by delivering to the Company
a written request (a “Shelf Offering Request”) for such offering to the Company specifying the number of Shelf Registrable Securities that the Parent desires to sell pursuant to such offering (the “Shelf Offering”).
The Company shall include in such Shelf Offering the Registrable Securities of the Parent. The Company shall, as expeditiously as possible (and in any event within twenty (20) days after the receipt of a Shelf Offering Request), but subject to
Section 1(f) hereof, use its best efforts to facilitate such Shelf Offering. 
 (ii) Notwithstanding
the foregoing, if the Parent wishes to engage in an underwritten block trade off of a Shelf Registration Statement (either through filing an Automatic Shelf Registration Statement (as defined in Section 4 hereof) or through a take-down
from an already existing Shelf Registration Statement), then notwithstanding the foregoing time periods, the Parent only needs to notify the Company of the block trade Shelf Offering on the day such offering is to commence and the Company shall as

  
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expeditiously as possible use its best efforts to facilitate such offering (which may close as early as three (3) business days after the date it commences); provided that in the case
of such underwritten block trade, only the Parent shall have a right to notice and to participate, and provided, further, that the Parent shall use commercially reasonable efforts to work with the Company and the underwriters prior to
making such request in order to facilitate preparation of the registration statement, prospectus and other offering documentation related to the underwritten block trade. 

(iii) In the event the Parent initiates a 415 Registration, the Company shall, at the request of the Parent, file any
prospectus supplement or, if the applicable Shelf Registration Statement is an Automatic Shelf Registration Statement, any post-effective amendments and otherwise take any action necessary to include therein all disclosure and language deemed
necessary or advisable by the Parent. Once a Shelf Registration Statement has been declared effective, the Parent may request, and the Company shall be required to facilitate, an unlimited number of Shelf Offerings with respect to such Shelf
Registration Statement. 
 (e) Priority on Demand Registrations. The Company shall not include in any Demand Registration
any securities which are not Registrable Securities without the prior written consent of the Parent. 
 (f) Restrictions on
Demand Registrations. The Company shall not be obligated to effect any Demand Registration within 180 days after the effective date of the IPO or within 120 days after the effective date of any other previous Demand Registration. The Company may
postpone for up to 120 days the filing or the effectiveness of a registration statement for a Demand Registration if the Board of Directors (or its successor, the “Board”) and the Parent agree, and the Board has determined in its
reasonable good faith judgment, that such Demand Registration would reasonably be expected to have a material adverse effect on any proposal or plan by the Company or any of its Subsidiaries to engage in any acquisition of assets (other than in the
ordinary course of business) or any merger, consolidation, tender offer, reorganization or similar transaction; provided that in such event, the Parent shall be entitled to withdraw such request and, if such request is withdrawn, such Demand
Registration shall not count as one of the permitted Demand Registrations hereunder and the Company shall pay all Registration Expenses in connection with such registration. The Company may delay a Demand Registration hereunder only once in any
twelve-month period. 
 (g) Selection of Underwriters. The Parent shall have the right to select the investment banker(s)
and manager(s) to administer any Demand Registration, subject to the Company’s approval, which will not be unreasonably withheld, delayed or conditioned. 
 (h) Other Registration Rights. Except as provided in this Agreement, the Company shall not grant to any Persons the right to request the Company to register any equity securities of the Company, or
any securities convertible or exchangeable into or exercisable for such securities, without the prior written consent of the Parent; provided that the Company may grant rights to other Persons, including employees of the Company and its
Subsidiaries, to participate in Piggyback Registrations so long as such rights are subordinate to or on a pro rata basis with the rights of the Parent with respect to such Piggyback Registrations as set forth in Sections 2(c) and
2(d) hereof. 

  
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 2. Piggyback Registrations. 

(a) Right to Piggyback. 
 (i) Whenever the Company proposes to register any of its securities under the Securities Act (other than pursuant to a Demand Registration) and the registration form to be used may be used for the
registration of Registrable Securities (a “Piggyback Registration”), the Company shall give prompt written notice to the Parent of its intention to effect such a registration and, subject to the terms of Sections 2(c) and
2(d) hereof, shall include in such registration (and in all related registrations or qualifications under blue sky laws or in compliance with other registration requirements and in any related underwriting) all Registrable Securities with
respect to which the Company has received written requests from the Parent for inclusion therein within 20 days after the receipt of the Company’s notice. 
 (ii) Notwithstanding the foregoing, if the Parent wishes to engage in an underwritten block trade off of a Shelf Registration Statement (either through filing an Automatic Shelf Registration Statement or
through a take-down from an already existing Shelf Registration Statement), then notwithstanding the foregoing time periods, the Parent only needs to notify the Company of the block trade Shelf Offering on the day such offering is to commence and
the Company shall as expeditiously as possible use its best efforts to facilitate such offering (which may close as early as three (3) business days after the date it commences); provided that in the case of such underwritten block
trade, only the Parent shall have a right to notice and to participate, and provided, further, that the Parent shall use commercially reasonable efforts to work with the Company and the underwriters prior to making such request in
order to facilitate preparation of the registration statement, prospectus and other offering documentation related to the underwritten block trade. 
 (b) Piggyback Expenses. The Registration Expenses of the Parent shall be paid by the Company in all Piggyback Registrations. 

(c) Priority on Primary Registrations. If a Piggyback Registration is an underwritten primary registration on behalf of the
Company, and the managing underwriters advise the Company in writing that in their opinion the number of securities requested to be included in such registration exceeds the number which can be sold in such offering without adversely affecting the
marketability of the offering, the Company shall include in such registration (i) first, the securities the Company proposes to sell, (ii) second, the Registrable Securities requested to be included in such registration by the Parent, and
(iii) third, other securities requested to be included in such registration, pro rata among the holders thereof on the basis of the number of outstanding shares owned by each such holder (determined, if appropriate, on an as if converted
basis). 

  
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 (d) Priority on Secondary Registrations. If a Piggyback Registration is an
underwritten secondary registration on behalf of holders of the Company’s securities, and the managing underwriters advise the Company in writing that in their opinion the number of securities requested to be included in such registration
exceeds the number which can be sold in such offering without adversely affecting the marketability of the offering in the price range acceptable to the holders initially requesting such registration, the Company shall include in such registration
(i) first, the Registrable Securities requested to be included in such registration by the Parent, and (ii) second, other securities requested to be included in such registration, pro rata among the holders thereof on the basis of
the number of outstanding shares owned by each such holder (determined, if appropriate, on an as if converted basis). 
 (e)
Other Registrations. If the Company has previously filed a registration statement with respect to Registrable Securities pursuant to Section 1 or pursuant to this Section 2, and if such previous registration has not
been withdrawn or abandoned, the Company shall not file or cause to be effected any other registration of any of its equity securities or securities convertible or exchangeable into or exercisable for its equity securities under the Securities Act
(except on Form S-8 or any successor form), whether on its own behalf or at the request of any holder or holders of such securities, until a period of at least 120 days has elapsed from the effective date of such previous registration.

 3. Holdback Agreements. 
 (a) The Parent agrees that it shall not effect any public sale or distribution (including sales pursuant to Rule 144) of equity securities of the Company, or any securities convertible into or
exchangeable or exercisable for such securities, during the seven days prior to and the 180-day period beginning on the effective date of any underwritten registration filed under the Securities Act (except as part of such underwritten
registration), unless the underwriters managing the registered public offering and the Parent otherwise agree in writing. 
 (b)
The Company (i) shall not effect any public sale or distribution of its equity securities, or any securities convertible into or exchangeable or exercisable for such securities, during the seven days prior to and during the 180 day period
beginning on the effective date of any underwritten Demand Registration or any underwritten Piggyback Registration (except as part of such underwritten registration or pursuant to registrations on Form S-8 or any successor form), unless the
underwriters managing the registered public offering and the Parent agree, and (ii) shall cause each of its executive officers and directors and holders of at least 2% (on a fully diluted basis) of its Common Stock, or any securities
convertible into or exchangeable or exercisable for Common Stock, purchased from the Company at any time after the date of this Agreement (other than in a registered public offering) to agree not to effect any public sale or distribution (including
sales pursuant to Rule 144 or any successor rule) of any such securities during such period (except as part of such underwritten registration, if otherwise permitted), unless the underwriters managing the registered public offering and the Parent
otherwise agree. 

  
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 4. Registration Procedures. Whenever the Parent has requested that any Registrable
Securities be registered pursuant to this Agreement, the Company shall use its best efforts to effect the registration and the sale of such Registrable Securities in accordance with the intended method of disposition thereof, and pursuant thereto
the Company shall as expeditiously as possible: 
 (a) prepare in accordance with the Securities Act and all applicable rules
and regulations promulgated thereunder and file with the Securities and Exchange Commission a registration statement, and all amendments and supplements thereto and related prospectuses as may be necessary to comply with applicable securities laws,
with respect to such Registrable Securities and use its best efforts to cause such registration statement to become effective (provided that before filing a registration statement or prospectus or any amendments or supplements thereto, the
Company shall furnish to the counsel selected by the Parent copies of all such documents proposed to be filed, which documents shall be subject to the review and comment of such counsel); 

(b) notify the Parent of the effectiveness of each registration statement filed hereunder and prepare and file with the Securities and
Exchange Commission such amendments and supplements to such registration statement and the prospectus used in connection therewith as may be necessary to keep such registration statement effective until the date as of which there are no longer any
Registrable Securities covered by such registration statement in existence and to comply with the provisions of the Securities Act with respect to the disposition of all securities covered by such registration statement during such period in
accordance with the intended methods of disposition by the Parent thereof set forth in such registration statement; 
 (c)
furnish to the Parent such number of copies of such registration statement, each amendment and supplement thereto, the prospectus included in such registration statement (including each preliminary prospectus and any Free-Writing Prospectus) and
such other documents as the Parent may reasonably request in order to facilitate the disposition of the Registrable Securities owned by the Parent; 
 (d) use its best efforts to register or qualify such Registrable Securities under such other securities or blue sky laws of such jurisdictions as the Parent reasonably requests and do any and all other
acts and things which may be reasonably necessary or advisable to enable the Parent to consummate the disposition in such jurisdictions of the Registrable Securities owned by the Parent (provided that the Company shall 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 clause (i), (ii) subject itself to taxation in any such jurisdiction or (iii) consent to general service of
process in any such jurisdiction); 
 (e) notify the Parent (i) after it receives notice thereof, of the date and time when
such registration statement and each post-effective amendment thereto has become effective or a prospectus or supplement to any prospectus relating to a registration statement has been filed and when any registration or qualification has become
effective under a state securities or blue sky law or any exemption thereunder has been obtained, (ii) after receipt thereof, of any request by the Securities and Exchange Commission for the amendment or supplementing of such registration
statement or prospectus or for additional information, and (iii) at any time when a prospectus relating thereto is required to be delivered under the Securities Act, of the happening of any event as a result of which the prospectus included in
such registration statement contains an untrue statement of a material fact or omits any fact necessary to make the 

  
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statements therein not misleading, and, at the request of the Parent, the Company shall prepare, file with the SEC and furnish to the Parent a reasonable number of copies of a supplement or
amendment to such prospectus so that, as thereafter delivered to the purchasers of such Registrable Securities, such prospectus shall not contain an untrue statement of a material fact or omit to state any fact necessary to make the statements
therein not misleading; 
 (f) prepare and file promptly with the Securities and Exchange Commission, and notify the Parent
prior to the filing of, such amendments or supplements to such registration statement or prospectus as may be necessary to correct any statements or omissions if, at the time when a prospectus relating to such securities is required to be delivered
under the Securities Act, when any event has occurred as the result of which any such prospectus or any other prospectus as then in effect would include an 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 not misleading, and, in case the Parent or any of its underwriters is required to deliver a prospectus at a time when the prospectus then in circulation is not in compliance with the Securities Act
or the rules and regulations promulgated thereunder, the Company shall use its best efforts to prepare promptly upon request of the Parent or such underwriter such amendments or supplements to such registration statement and prospectus as may be
necessary in order for such prospectus to comply with the requirements of the Securities Act and such rules and regulations; 

(g) cause all such Registrable Securities to be listed on each securities exchange on which similar securities issued by the Company are
then listed and, if not so listed, to be listed on the NASD automated quotation system and, if listed on the NASD automated quotation system, use its best efforts to secure designation of all such Registrable Securities covered by such registration
statement as a NASDAQ “national market system security” within the meaning of Rule 11Aa2-1 of the Securities and Exchange Commission or, failing that, to secure NASDAQ authorization for such Registrable Securities and, without limiting the
generality of the foregoing, to arrange for at least two market makers to register as such with respect to such Registrable Securities with the NASD; 
 (h) provide a transfer agent and registrar for all such Registrable Securities not later than the effective date of such registration statement; 

(i) enter into and perform such customary agreements (including underwriting agreements in customary form) and take all such other
actions as the Parent or its underwriters, if any, reasonably request in order to expedite or facilitate the disposition of such Registrable Securities (including effecting a stock split or a combination of shares); 

(j) make available for inspection by the Parent, any underwriter participating in any disposition pursuant to such registration statement
and any attorney, accountant or other agent retained by the Parent or the underwriter, all financial and other records, pertinent corporate documents and properties of the Company, and cause the Company’s officers, directors, employees and
independent accountants to supply all information reasonably requested by the Parent or the underwriter or any of their respective attorneys, accountants or agents in connection with such registration statement; 

  
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 (k) otherwise use its best efforts to comply with all applicable rules and regulations of
the Securities and Exchange Commission, and make available to the Parent, as soon as reasonably practicable, an earnings statement covering the period of at least twelve months beginning with the first day of the Company’s first full calendar
quarter after the effective date of the registration statement, which earnings statement shall satisfy the provisions of Section 11(a) of the Securities Act and Rule 158 thereunder; 

(l) obtain one or more comfort letters, dated the effective date of such registration statement (and, if such registration includes an
underwritten public offering, dated the date of the closing under the underwriting agreement), signed by the Company’s independent public accountants in customary form and covering such matters of the type customarily covered by comfort letters
as the Parent reasonably requests; 
 (m) if any such registration or comparable statement refers to the Parent or any of its
affiliates by name or otherwise as the holder of any securities of the Company and if in the Parent’s sole and exclusive judgment, the Parent or such affiliate is or might be deemed to be an underwriter or a controlling person of the Company,
the Parent shall have the right to require (i) the insertion therein of language, in form and substance satisfactory to the Parent and presented to the Company in writing, to the effect that the holding by the Parent or such affiliate of such
securities is not to be construed as a recommendation by the Parent or such affiliate, as applicable, of the investment quality of the Company’s securities covered thereby and that such holding does not imply that the Parent or such affiliate,
as applicable, shall assist in meeting any future financial requirements of the Company, or (ii) in the event that such reference to the Parent or such affiliate by name or otherwise is not required by the Securities Act or any similar Federal
statute then in force, the deletion of the reference to such Person; provided that with respect to this clause (ii) the Parent shall furnish to the Company an opinion of counsel to such effect, which opinion and counsel shall be
reasonably satisfactory to the Company; 
 (n) in the event of the issuance of any stop order suspending the effectiveness of a
registration statement, or of any order suspending or preventing the use of any related prospectus or suspending the qualification of any common stock included in such registration statement for sale in any jurisdiction, the Company shall use its
best efforts promptly to obtain the withdrawal of such order; and 
 (o) provide a legal opinion of the Company’s outside
counsel, dated the effective date of such registration statement (and, if such registration includes an underwritten public offering, dated the date of the closing under the underwriting agreement), with respect to the registration statement, each
amendment and supplement thereto, the prospectus included therein (including the preliminary prospectus) and such other documents relating thereto in customary form and covering such matters of the type customarily covered by legal opinions of such
nature. 
 To the extent the Company is a well-known seasoned issuer (as defined in Rule 405 under the Securities Act) (a
“WKSI”) at the time any request for a Demand Registration is submitted to the Company, and such request for a Demand Registration requests that the Company file an automatic shelf registration statement (as defined in Rule 405 under
the Securities Act) (an “Automatic Shelf Registration Statement”) on Form S-3, the Company shall file an Automatic 

  
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Shelf Registration Statement which covers those Registrable Securities which are requested to be registered. The Company shall use its best efforts to remain a WKSI (and not become an ineligible
issuer (as defined in Rule 405 under the Securities Act)) during the period during which such Automatic Shelf Registration Statement is required to remain effective. If the Company does not pay the filing fee covering the Registrable Securities at
the time the Automatic Shelf Registration Statement is filed, the Company agrees to pay such fee at such time or times as the Registrable Securities are to be sold. If the Automatic Shelf Registration Statement has been outstanding for at least
three (3) years, at the end of the third year the Company shall refile a new Automatic Shelf Registration Statement covering the Registrable Securities. If at any time when the Company is required to re-evaluate its WKSI status the Company
determines that it is not a WKSI, the Company shall use its best efforts to refile the Shelf Registration Statement on Form S-3 and, if such form is not available, Form S-1 and keep such registration statement effective during the period during
which such registration statement is required to be kept effective. 
 If the Company files any Shelf Registration Statement for the benefit of
the holders of any of its securities other than the Parent, and the Parent does not request that its Registrable Securities be included in such Shelf Registration Statement, the Company agrees that it shall include in such Shelf Registration
Statement such disclosures as may be required by Rule 430B under the Securities Act (referring to the unnamed selling security holders in a generic manner by identifying the initial offering of the securities) in order to ensure that the Parent may
be added to such Shelf Registration Statement at a later time through the filing of a prospectus supplement rather than a post-effective amendment. 
 In the event of a registration of the Parent’s Registrable Securities, the Company may require the Parent to furnish the Company such information regarding the Parent and the distribution of such
securities as the Company may from time to time reasonably request in writing. During such time as the Parent may be engaged in a distribution of such securities, the Parent shall distribute such securities under the registration statement solely in
the manner described in the registration statement. 
 5. Registration Expenses. 

(a) All expenses incident to the Company’s performance of or compliance with this Agreement, including without limitation all
registration, qualification and filing fees, fees and expenses of compliance with securities or blue sky laws, printing expenses, messenger and delivery expenses, fees and disbursements of custodians, and fees and disbursements of counsel for the
Company and all independent certified public accountants, underwriters (excluding discounts and commissions) and other Persons retained by the Company (all such expenses being herein called “Registration Expenses”), shall be borne
as provided in this Agreement, except that the Company shall, in any event, pay its internal expenses (including, without limitation, all salaries and expenses of its officers and employees performing legal or accounting duties), the expense of any
annual audit or quarterly review, the expense of any liability insurance and the expenses and fees for listing the securities to be registered on each securities exchange on which similar securities issued by the Company are then listed or on the
NASD automated quotation system. 

  
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 (b) The Company shall reimburse the Parent for the reasonable fees and disbursements of one
counsel (if any) chosen by the Parent in connection with each Demand Registration and each Piggyback Registration. 
 (c) To the
extent Registration Expenses are not required to be paid by the Company, the Parent shall pay those Registration Expenses allocable to the registration of its securities so included, and any Registration Expenses not so allocable shall be borne by
all sellers of securities included in such registration in proportion to the aggregate selling price of the securities to be so registered. 
 6. Indemnification. 
 (a) The Company agrees to indemnify and hold harmless,
to the maximum extent permitted by applicable law, the Parent and its direct and indirect partners and members and each of their respective officers, directors, members, managers and employees and each Person who controls the Parent (within the
meaning of the Securities Act) (each such Person, a “Parent Indemnified Party”) against all losses, claims, actions, damages, liabilities and expenses (collectively, “Losses”) caused by (i) any untrue or
alleged untrue statement of material fact contained in any registration statement, prospectus or preliminary prospectus or any amendment thereof or supplement thereto or any omission or alleged omission of a material fact required to be stated
therein or necessary to make the statements therein not misleading, or (ii) any violation by the Company of any rule or regulation promulgated under the Securities Act and any state securities laws applicable to the Company and relating to
action or inaction required of the Company in connection with any such registration, qualification or compliance, and to pay to each Parent Indemnified Party, as incurred, any legal and any other expenses reasonably incurred in connection with
investigating, preparing or defending any such Losses, except insofar as the same are caused by or contained in any information furnished in writing to the Company or any managing underwriter by such Parent Indemnified Party expressly for use
therein or by such Parent Indemnified Party’s failure to deliver a copy of the registration statement or prospectus or any amendments or supplements thereto after the Company has furnished such Parent Indemnified Party with a sufficient number
of copies of the same. In connection with an underwritten offering, the Company shall indemnify such underwriters, their officers and directors and each Person who controls such underwriters (within the meaning of the Securities Act) to the same
extent as provided above with respect to the indemnification of the Parent Indemnified Party. 
 (b) In connection with any
registration statement in which the Parent is participating, the Parent shall furnish to the Company in writing such information and affidavits as the Company reasonably requests for use in connection with any such registration statement or
prospectus and, to the extent permitted by law, shall indemnify the Company, its directors and officers and each Person who controls the Company (within the meaning of the Securities Act) against any Losses resulting from any untrue or alleged
untrue statement of material fact contained in the registration statement, prospectus or preliminary prospectus or any amendment thereof or supplement thereto or any omission or alleged omission of a material fact required to be stated therein or
necessary to make the statements therein not misleading, but only to the extent that such untrue statement or omission is contained in any information or affidavit so furnished in writing by the Parent for use therein; provided that the
obligation to indemnify shall be limited to the net amount of proceeds received by the Parent from the sale of Registrable Securities pursuant to such registration statement. 

  
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 (c) Any Person entitled to indemnification hereunder shall (i) give prompt written
notice to the indemnifying party of any claim with respect to which it seeks indemnification (provided that the failure to give prompt notice shall not impair any Person’s right to indemnification hereunder to the extent such failure has
not prejudiced the indemnifying party) and (ii) unless in such indemnified party’s reasonable judgment a conflict of interest between such indemnified and indemnifying parties may exist with respect to such claim, permit such indemnifying
party to assume the defense of such claim with counsel reasonably satisfactory to the indemnified party. If such defense is assumed, the indemnifying party shall not be subject to any liability for any settlement made by the indemnified party
without its consent (but such consent shall not be unreasonably withheld). An indemnifying party who is not entitled to, or elects not to, assume the defense of a claim shall not be obligated to pay the fees and expenses of more than one counsel for
all parties indemnified by such indemnifying party with respect to such claim, unless in the reasonable judgment of any indemnified party a conflict of interest may exist between such indemnified party and any other of such indemnified parties with
respect to such claim. In such instance, the conflicting indemnified parties shall have a right to retain one separate counsel, chosen by the Parent, at the expense of the indemnifying party. No indemnifying party, in the defense of such claim or
litigation, shall, except with the consent of each indemnified party, consent to the entry of any judgment or enter into any settlement which does not include as an unconditional term thereof the giving by the claimant or plaintiff to such
indemnified party of a release from all liability in respect to such claim or litigation. 
 (d) The indemnification and
contribution provided for under this Agreement shall 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 and shall
survive the transfer of securities. 
 (e) If the indemnification provided for in this Section 6 is held by a court
of competent jurisdiction to be unavailable to an indemnified party or is otherwise unenforceable with respect to any Losses referred to herein, then the indemnifying party, in lieu of indemnifying such indemnified party hereunder, shall contribute
to the amounts paid or payable by such indemnified party as a result of such loss, claim, damage, liability or action in such proportion as is appropriate to reflect the relative fault of the indemnifying party on the one hand and of the indemnified
party on the other hand in connection with the statements or omissions which resulted in such loss, claim, damage, liability or action as well as any other relevant equitable considerations; provided that the maximum amount of liability in
respect of such contribution shall be limited, in the case of the Parent, to an amount equal to the net proceeds actually received by the Parent from the sale of its Registrable Securities effected pursuant to such registration. The relative fault
of the indemnifying party and of the indemnified party shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission to state a material fact relates to information
supplied by the indemnifying party or by the indemnified party and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. The amount paid or payable by a party as a
result of the Losses or other liabilities referred to above 

  
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shall be deemed to include, any legal or other fees, charges or expenses reasonably incurred by such party in connection with any investigation or proceeding. The parties hereto agree that it
would not be just and equitable if contribution pursuant to Section 6(a) were determined by pro rata allocation or by any other method of allocation which does not take account of the equitable considerations referred to in the preceding
sentences. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to contribution pursuant to Section 6(a). 

7. Participation in Underwritten Registrations. No Person may participate in any registration hereunder which is underwritten
unless the Parent provides prior written consent, which the Parent may withhold in its sole and absolute discretion. 
 8.
Distributions. In the event the Parent distributes any Registrable Securities to any of the direct or indirect members or partners of Parent (each such person receiving Registrable Securities thereby, a “Qualified Third-Party
Beneficiary”), the Parent may, in its sole and absolute discretion, elect to assign to such Qualified Third-Party Beneficiary, in whole or in part, its rights hereunder with respect to the Registrable Securities distributed to such
Qualified Third-Party Beneficiary. In such event, with respect to the Registrable Securities distributed to such Qualified Third-Party Beneficiary, such Qualified Third-Party Beneficiary shall succeed to all of the rights and obligations of Parent
under this Agreement. Without limiting the foregoing, (i) the rights of each “Golden Gate Member” (as such term is used in the Parent Registration Rights Agreement) with respect to the “Common Stock” (as such term is used in
the Parent Registration Rights Agreement) shall apply to each Qualified Third-Party Beneficiary mutatis mutandis with respect to the Registrable Securities distributed to such Qualified Third-Party Beneficiary and (ii) for the avoidance
of doubt, the Company hereby acknowledges and agrees that the Parent may, at the Parent’s election and in its sole and absolute discretion, deem the Company’s Common Stock as the “Common Stock” as that term is used in the Parent
Registration Rights Agreement. 
 9. Current Public Information. At all times after the Company has filed a registration
statement with the Securities and Exchange Commission pursuant to the requirements of either the Securities Act or the Securities Exchange Act, the Company will file all reports required to be filed by it under the Securities Act and the Securities
Exchange Act and the rules and regulations adopted by the Securities and Exchange Commission thereunder, and will take such further action as the Parent may reasonably request, all to the extent required to enable the Parent to sell Registrable
Securities pursuant to Rule 144 adopted by the Securities and Exchange Commission under the Securities Act (as such rule may be amended from time to time) or any similar rule or regulation hereafter adopted by the Securities and Exchange Commission.

 10. Definitions. 
 (a) “Common Stock” means the common stock of the Company. 
 (b)
“Person” means an individual, a partnership, a joint venture, a corporation, a limited liability company, an associate, a joint stock company, a trust, an unincorporated organization and a governmental entity or any department or
agency or political subdivision thereof. 

  
 12 

 (c) “Registrable Securities” means (i) any Common Stock held by the
Parent, and (ii) any Common Stock issued or issuable with respect to the securities referred to in clause (i) above by way of a stock dividend or stock split or in connection with a combination of shares, recapitalization,
reclassification, merger, consolidation or other reorganization. As to any particular Registrable Securities, such securities shall cease to be Registrable Securities when they have been distributed to the public pursuant to an offering registered
under the Securities Act or sold to the public through a broker, dealer or market maker in compliance with Rule 144 (or any successor rule) promulgated under the Securities Act or repurchased by the Company or any of its subsidiaries. 

(d) “Securities Act” means the Securities Act of 1933, as amended, or any similar federal law then in force. 

(e) “Securities and Exchange Commission” includes any governmental body or agency succeeding to the functions of the
Securities and Exchange Commission. 
 (f) “Securities Exchange Act” means the Securities Exchange Act of 1934,
as amended, or any similar federal law then in force. 
 (g) “Subsidiaries” means, with respect to any
specified Person, any other Person in which such specified Person, directly or indirectly through one or more Affiliates or otherwise, beneficially owns at least fifty percent (50%) of either the ownership interest (determined by equity or
economic interests) in, or the voting control of, such other Person. 
 11. Miscellaneous. 

(a) No Inconsistent Agreements. The Company shall not hereafter enter into any agreement with respect to its securities which is
inconsistent with or violates the rights granted to the Parent in this Agreement without the prior written consent of the Parent. 
 (b) Adjustments Affecting Registrable Securities. The Company shall not take any action, or permit any change to occur, with respect to its securities which would adversely affect the ability of
the Parent to include its Registrable Securities in a registration undertaken pursuant to this Agreement or which would adversely affect the marketability of such Registrable Securities in any such registration (including, without limitation,
effecting a stock split or a combination of shares). 
 (c) Remedies. Any Person having rights under any provision of
this Agreement shall be entitled to enforce such rights specifically (without posting a bond or other security), 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 that, in addition to any other rights and remedies existing in its favor, any party shall be entitled to
specific performance and/or other injunctive relief from any court of law or equity of competent jurisdiction (without posting any bond or other security) in order to enforce or prevent violation of the provisions of this Agreement. 

  
 13 

 (d) Amendments and Waivers. The provisions of this Agreement may be amended or
waived only upon the prior written consent of the Company and the Parent. Notwithstanding the immediately preceding sentence, the parties hereto agree the Company and the Parent may not amend or waive this Agreement to reduce or eliminate any right
of any Qualified Third-Party Beneficiary herein (it being understood that an amendment or waiver which provides a Person (other than the Parent) with registration rights having superiority or parity in priority in a registration on behalf of the
Company to the Parent will not require the consent of any Qualified Third-Party Beneficiary). 
 (e) Entire Agreement.
This Agreement (including the Parent Registration Rights Agreement and the other documents referred to herein) constitutes the entire agreement among the Parties and supersedes any prior understandings, agreements, or representations by or among the
Parties, written or oral, other than the Parent Registration Rights Agreement, to the extent they relate in any way to the subject matter hereof. 
 (f) Successors and Assigns. All covenants and agreements in this Agreement by or on behalf of any of the parties hereto shall bind and inure to the benefit of the respective successors and assigns
of the parties hereto whether so expressed or not. 
 (g) Severability. Whenever possible, each provision of this
Agreement shall be interpreted in such manner as to be effective and valid under applicable law, but if any provision of this Agreement is held to be prohibited by or invalid under applicable law, such provision shall be ineffective only to the
extent of such prohibition or invalidity, without invalidating the remainder of this Agreement. 
 (h) Counterparts. This
Agreement may be executed and delivered simultaneously in two or more counterparts (including by telecopied signature pages, if facsimile or PDF format), any one of which need not contain the signatures of more than one party, but all such
counterparts taken together shall constitute one and the same Agreement. 
 (i) Descriptive Headings. The descriptive
headings of this Agreement are inserted for convenience only and do not constitute a part of this Agreement. 
 (j) Governing
Law. All issues and questions concerning the construction, validity, interpretation and enforcement of this Agreement and the exhibits and schedules hereto shall be governed by, and construed in accordance with, the laws of the State of
Delaware, without giving effect to any choice of law or conflict of law rules or provisions (whether of the State of Delaware or any other jurisdiction) that would cause the application of the laws of any jurisdiction other than the State of
Delaware. 
 (k) Notices. In the event a notice or other document is required to be sent hereunder to the Company or to
the Parent (or legal representative of the Parent), such notice or other document shall be in writing and shall be considered given and received, in all respects when personally delivered, when sent by facsimile transmission actually received by the
applicable party’s receiving equipment or when sent by overnight express or courier service or 

  
 14 

 
United States registered or certified mail, return receipt requested and postage and other fees prepaid, on the day such notice or document is personally delivered, on the next business day
following the day on which such notice or other document is timely deposited with the overnight delivery service as aforesaid or on the third business day following the day on which such notice or other document is deposited in the U.S. mail as
aforesaid. Such notice and document shall be addressed to the party entitled to receive such notice or other document at the respective addresses indicated below: 
 If to the Company: 
 8490 Progress Drive, Suite 300 

Frederick, MD 21701 
 Attention: Legal Department 
 Facsimile: +1 301 682 0690 

If to the Parent: 
 c/o Golden Gate Private Equity, Inc. 
 One Embarcadero Center, 39th Floor

 San Francisco, CA 94111 
 Attention: Prescott Ashe and Rajeev Amara 
 Fax: +1 415 983 2701 

with a copy to: 
 Kirkland & Ellis LLP 
 555 California Street, Suite 2700 

San Francisco, CA 94104 
 Attention: Stephen D. Oetgen, Esq. 
 Fax: +1 415 439 1500 

or to such other address or to the attention of such other person as the recipient party (or its legal representative) has specified by prior written
notice to the sending party. Until such notice of change of address is properly given, the addresses set forth herein shall be effective for all purposes. 
 *  *  *  *  * 

  
 15 

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

			
	U.S. SILICA HOLDINGS, INC.
		
	By:	 	  

	Name:	 	  

	Title:	 	  

	
	GGC USS HOLDINGS, LLC
		
	 By:
	 	  

	 Name:
	 	  

	 Title:Form of Indemnification Agreement

 EXHIBIT 10.20 
 INDEMNIFICATION AGREEMENT 
 THIS INDEMNIFICATION AGREEMENT (this
“Agreement”) is made and entered into as of [            ] between U.S. Silica Holdings, Inc., a Delaware corporation (the “Company”), and
[            ] (“Indemnitee”). 
 WHEREAS, highly
competent persons have become more reluctant to serve corporations as directors or officers or in other capacities unless they are provided with adequate protection through insurance or adequate indemnification against inordinate risks of claims and
actions against them arising out of their service to and activities on behalf of the corporation; 
 WHEREAS, the Board of
Directors of the Company (the “Board”) has determined that, in order to attract and retain qualified individuals, the Company will attempt to maintain on an ongoing basis, at its sole expense, liability insurance to protect persons
serving the Company and its subsidiaries from certain liabilities. Although the furnishing of such insurance has been a customary and widespread practice among United States-based corporations and other business enterprises, the Company believes
that, given current market conditions and trends, such insurance may be available to it in the future only at higher premiums and with more exclusions. At the same time, directors, officers and other persons in service to corporations or business
enterprises are being increasingly subjected to expensive and time-consuming litigation relating to, among other things, matters that traditionally would have been brought only against the corporation or business enterprise itself. The Bylaws of the
Company (the “Bylaws”) require indemnification of the officers and directors of the Company. Indemnitee may also be entitled to indemnification pursuant to the General Corporation Law of the State of Delaware
(“DGCL”). The Bylaws and the DGCL expressly provide that the indemnification provisions set forth therein are not exclusive, and thereby contemplate that contracts may be entered into between the Company and members of the Board,
officers of the Company and other persons with respect to indemnification; 
 WHEREAS, the uncertainties relating to such
insurance and to indemnification have increased the difficulty of attracting and retaining such persons; 
 WHEREAS, the Board
has determined that the increased difficulty in attracting and retaining such persons 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 such protection in the future; 
 WHEREAS, it is reasonable, prudent and necessary for the Company contractually to
obligate itself to indemnify, and to advance expenses on behalf of, such persons to the fullest extent permitted by applicable law so that they will serve or continue to serve the Company free from undue concern that they will not be so indemnified;

 WHEREAS, this Agreement is a supplement to and in furtherance of the Bylaws and any resolutions adopted pursuant thereto, and
shall not be deemed a substitute therefor, nor to diminish or abrogate any rights of Indemnitee thereunder; 
 WHEREAS,
Indemnitee may not be willing to serve as an officer or director without adequate protection, and the Company desires Indemnitee to serve in such capacity; Indemnitee 

 
is willing to serve, continue to serve and take on additional service for or on behalf of the Company on the condition that he be so indemnified; and 

[WHEREAS, Indemnitee has certain rights to indemnification and/or insurance provided by Golden Gate Private Equity,
Inc. (“Golden Gate”) or affiliates of Golden Gate which Indemnitee and Golden Gate intend to be secondary to the primary obligation of the Company to indemnify Indemnitee as provided herein, with the Company’s acknowledgment of
and agreement to the foregoing being a material condition to Indemnitee’s willingness to serve on the
Board.]1 

NOW, THEREFORE, in consideration of Indemnitee’s agreement to serve as a director or officer from and after the date hereof, the
parties hereto agree as follows: 
 1. Indemnity of Indemnitee. The Company hereby agrees to hold harmless
and indemnify Indemnitee to the fullest extent permitted by law, as such may be amended from time to time. In furtherance of the foregoing indemnification, and without limiting the generality thereof: 

(a) Proceedings other than Proceedings by or in the Right of the Company. Indemnitee shall be entitled to the
rights of indemnification provided in this Section l(a) if, by reason of his Corporate Status (as hereinafter defined), Indemnitee is, or is threatened to be made, a party to or participant in any Proceeding (as hereinafter defined)
other than a Proceeding by or in the right of the Company. Pursuant to this Section 1(a), Indemnitee shall be indemnified against all Expenses (as hereinafter defined), judgments, penalties, fines and amounts paid in settlement actually
and reasonably incurred by him, or on his behalf, in connection with such Proceeding or any claim, issue or matter therein, if Indemnitee acted in good faith and in a manner Indemnitee reasonably believed to be in or not opposed to the best
interests of the Company, and with respect to any criminal Proceeding, had no reasonable cause to believe Indemnitee’s conduct was unlawful. 
 (b) Proceedings by or in the Right of the Company. Indemnitee shall be entitled to the rights of indemnification provided in this Section 1(b) if, by reason of his Corporate Status,
Indemnitee is, or is threatened to be made, a party to or participant in any Proceeding brought by or in the right of the Company. Pursuant to this Section 1(b), Indemnitee shall be indemnified against all Expenses actually and
reasonably incurred by Indemnitee, or on Indemnitee’s behalf, in connection with such Proceeding if Indemnitee acted in good faith and in a manner Indemnitee reasonably believed to be in or not opposed to the best interests of the Company;
provided, however, if applicable law so provides, no indemnification against such Expenses shall be made in respect of any claim, issue or matter in such Proceeding as to which Indemnitee shall have been adjudged to be liable to the
Company unless and to the extent that the Court of Chancery of the State of Delaware shall determine that such indemnification may be made. 
 (c) Indemnification for Expenses of a Party Who is Wholly or Partly Successful. Notwithstanding any other provision of this Agreement, to the extent that 

 
  

	1 	 Bracketed provisions apply only to Golden Gate directors. 

  
 2 

 
Indemnitee is, by reason of his Corporate Status, a party to and is successful, on the merits or otherwise, in any Proceeding, he shall be indemnified to the maximum extent permitted by law, as
such may be amended from time to time, against all Expenses actually and reasonably incurred by him or on his behalf 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 less than all claims, issues or matters in such Proceeding, the Company shall indemnify Indemnitee against all Expenses actually and reasonably incurred by him or on his behalf in connection with each successfully resolved claim,
issue or matter. For purposes of this Section 1(c) and without limitation, the termination of any claim, issue or matter in such a Proceeding by dismissal, with or without prejudice, shall be deemed to be a successful result as to such
claim, issue or matter. 
 2. Additional Indemnity. In addition to, and without regard to any limitations
on, the indemnification provided for in Section 1 of this Agreement, the Company shall and hereby does, to the fullest extent permitted by applicable law, indemnify and hold harmless Indemnitee against all Expenses, judgments, penalties,
fines and amounts paid in settlement actually and reasonably incurred by him or on his behalf if, by reason of his Corporate Status, he is, or is threatened to be made, a party to or participant in any Proceeding (including a Proceeding by or in the
right of the Company), including, without limitation, all liability arising out of the negligence or active or passive wrongdoing of Indemnitee. The only limitation that shall exist upon the Company’s obligations pursuant to this Agreement,
other than those set forth in Section 9 hereof, shall be that the Company shall not be obligated to make any payment to Indemnitee that is finally determined (under the procedures, and subject to the presumptions, set forth in
Sections 6 and 7 hereof) to be unlawful. 
 3. Contribution. 

(a) Whether or not the indemnification provided in Sections 1 and 2 hereof is available, in respect of any
threatened, pending or completed action, suit or proceeding in which the Company is jointly liable with Indemnitee (or would be if joined in such action, suit or proceeding), to the fullest extent permitted by applicable law, the Company shall pay,
in the first instance, the entire amount of any judgment or settlement of such action, suit or proceeding without requiring Indemnitee to contribute to such payment and the Company hereby waives and relinquishes any right of contribution it may have
against Indemnitee. The Company shall not, without the Indemnitee’s prior written consent, enter into any such settlement of any action, suit or proceeding (in whole or in part) unless such settlement (i) provides for a full and final
release of all claims asserted against Indemnitee and (ii) does not impose any Expense, judgment, fine, penalty or limitation on Indemnitee. 
 (b) Without diminishing or impairing the obligations of the Company set forth in the preceding subparagraph, if, for any reason, Indemnitee shall elect or be required to pay all or any portion of any
judgment or settlement in any threatened, pending or completed action, suit or proceeding in which the Company is jointly liable with Indemnitee (or would be if joined in such action, suit or proceeding), to the fullest extent permitted by
applicable law, the Company shall contribute to the amount of Expenses, judgments, fines and amounts paid in settlement actually and reasonably incurred and paid or payable by Indemnitee in proportion to the relative benefits received by the Company
and all officers, directors or employees of the 

  
 3 

 
Company, other than Indemnitee, who are jointly liable with Indemnitee (or would be if joined in such action, suit or proceeding), on the one hand, and Indemnitee, on the other hand, from the
transaction from which such action, suit or 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 or employees of the Company, other than Indemnitee, who are jointly liable with Indemnitee (or would be if joined in such action, suit or proceeding), on the one hand, and Indemnitee, on the
other hand, in connection with the events that resulted in such expenses, judgments, fines or settlement amounts, as well as any other equitable considerations which the law may require to be considered. The relative fault of the Company and all
officers, directors or employees of the Company, other than Indemnitee, who are jointly liable with Indemnitee (or would be if joined in such action, suit or proceeding), on the one hand, and Indemnitee, on the other hand, shall 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 is active or
passive. 
 (c) To the fullest extent permitted by applicable law, the Company hereby agrees to fully indemnify
and hold Indemnitee harmless from any claims of contribution which may be brought by officers, directors or employees of the Company, other than Indemnitee, who may be jointly liable with Indemnitee. 

(d) To the fullest extent permissible under applicable law, if the indemnification provided for in this Agreement is
unavailable to Indemnitee for any reason whatsoever, the Company, in lieu of indemnifying Indemnitee, shall contribute to the amount incurred by Indemnitee, whether for judgments, fines, penalties, excise taxes, amounts paid or to be paid in
settlement and/or for Expenses, in connection with any claim relating to an indemnifiable event under this Agreement, in such proportion as is deemed fair and reasonable in light of all of the circumstances of such Proceeding in order to reflect
(i) the relative benefits received by the Company and Indemnitee as a result of the event(s) and/or transaction(s) giving cause to such Proceeding, and/or (ii) the relative fault of the Company (and its directors, officers, employees and
agents) and Indemnitee in connection with such event(s) and/or transaction(s). 
 4. Indemnification for
Expenses of a Witness. Notwithstanding any other provision of this Agreement, to the fullest extent permitted by applicable law and to the extent that Indemnitee is, by reason of his Corporate Status, a witness, or is made (or asked) to respond
to discovery requests, in any Proceeding to which Indemnitee is not a party, he shall be indemnified against all Expenses actually and reasonably incurred by him or on his behalf in connection therewith. 

5. Advancement of Expenses. Notwithstanding any other provision of this Agreement (other than
Section 7(e)), the Company shall advance, to the extent not prohibited by law, all Expenses incurred by or on behalf of Indemnitee in connection with any Proceeding not initiated by Indemnitee within thirty (30) days after the
receipt by the Company of a statement or statements from Indemnitee requesting such advance or advances from time to time, whether prior to or after final disposition of such Proceeding. Such statement or statements shall

  
 4 

 
reasonably evidence the Expenses incurred by Indemnitee and shall include or be preceded or accompanied by a written undertaking by or on behalf of Indemnitee to repay any Expenses advanced if it
shall ultimately be determined that Indemnitee is not entitled to be indemnified against such Expenses. Any advances and undertakings to repay pursuant to this Section 5 shall be unsecured and interest free. In accordance with
Sections 7(d) and 7(e) of this Agreement, advances shall include any and all reasonable Expenses incurred pursuing an action to enforce this right of advancement, including Expenses incurred preparing and forwarding statements to the
Company to support the advances claimed. 
 6. Procedures and Presumptions for Determination of Entitlement to
Indemnification. It is the intent of this Agreement to secure for Indemnitee rights of indemnity that are as favorable as may be permitted under the DGCL and public policy of the State of Delaware. Accordingly, the parties agree that the
following procedures and presumptions shall apply in the event of any question as to whether Indemnitee is entitled to indemnification under this Agreement: 
 (a) To obtain indemnification under this Agreement, Indemnitee shall submit to the Company a written request, including therein or therewith such documentation and information as is reasonably available
to Indemnitee and is reasonably necessary to determine whether and to what extent Indemnitee is entitled to indemnification. The Secretary of the Company shall, promptly upon receipt of such a request for indemnification, advise the Board in writing
that Indemnitee has requested indemnification. Notwithstanding the foregoing, any failure of Indemnitee to provide such a request to the Company, or to provide such a request in a timely fashion, shall not relieve the Company of any liability that
it may have to Indemnitee unless, and to the extent that, such failure actually and materially prejudices the interests of the Company. 
 (b) Upon written request by Indemnitee for indemnification pursuant to the first sentence of Section 6(a) hereof, a determination with respect to Indemnitee’s entitlement thereto shall be
made in the specific case by one of the following four methods, which shall be at the election of the Board: (1) by a majority vote of the Disinterested Directors (as hereinafter defined), even though less than a quorum, (2) by a committee
of Disinterested Directors designated by a majority vote of the Disinterested Directors, even though less than a quorum, (3) if there are no Disinterested Directors, or if the Disinterested Directors so direct, by Independent Counsel in a
written opinion to the Board, a copy of which shall be delivered to Indemnitee, or (4) if so directed by the Board, by the stockholders of the Company; provided, however, that if a Change in Control has occurred, the determination
with respect to Indemnitee’s entitlement to indemnification shall be made by Independent Counsel. For purposes hereof, Disinterested Directors are those members of the Board who are not parties to the action, suit or proceeding in respect of
which indemnification is sought by Indemnitee. 
 (c) In the event the determination of entitlement to
indemnification is to be made by Independent Counsel, the Independent Counsel shall be selected as provided in this Section 6(c). If a Change in Control has not occurred, the Independent Counsel shall be selected by the Board (including
a vote of a majority of the Disinterested Directors if obtainable), and the Company shall give written notice to the Indemnitee advising him of the identity of the 

  
 5 

 
Independent Counsel so selected. Indemnitee may, within 10 days after such written notice of selection shall have been given, deliver to the Company 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 Section 13 of this
Agreement, and the objection shall set forth with particularity the factual basis of such assertion. Absent a proper and timely objection, the Person so selected shall 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 a Change in Control has occurred, the Independent Counsel shall be
selected by the Indemnitee (unless the Indemnitee shall request that such selection be made by the Board, in which event the preceding sentence shall apply), and approved by the Board within 20 days after notification by Indemnitee. If (i) an
Independent Counsel is to make the determination of entitlement pursuant to this Section 6, and (ii) within 20 days after submission by Indemnitee of a written request for indemnification pursuant to Section 6(a) hereof,
no Independent Counsel shall have been selected and not objected to, 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 shall
have been made by Indemnitee to the Company’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 the court shall designate, and the Person with respect
to whom all objections are so resolved or the Person so appointed shall act as Independent Counsel under Section 6(b) hereof. The Company shall pay any and all reasonable fees and expenses of Independent Counsel incurred by such
Independent Counsel in connection with acting pursuant to Section 6(b) hereof, and the Company shall pay all reasonable fees and expenses incident to the procedures of this Section 6(c), regardless of the manner in which such
Independent Counsel was selected or appointed. 
 (d) In making a determination with respect to entitlement to
indemnification hereunder, the Person making such determination shall presume that Indemnitee is entitled to indemnification under this Agreement. Anyone seeking to overcome this presumption shall have the burden of proof and the burden of
persuasion by clear and convincing evidence. Neither the failure of the Company (including by its directors or independent legal counsel) to have made a determination prior to the commencement of any action pursuant to this Agreement that
indemnification is proper in the circumstances because Indemnitee has met the applicable standard of conduct, nor an actual determination by the Company (including by its directors or independent legal counsel) that Indemnitee has not met such
applicable standard of conduct, shall be a defense to the action or create a presumption that Indemnitee has not met the applicable standard of conduct. 
 (e) Indemnitee shall be deemed to have acted in good faith if Indemnitee’s action is based on the records or books of account of the Enterprise (as hereinafter defined), including financial
statements, or on information supplied to Indemnitee by the officers of the Enterprise in the course of their duties, or on the advice of legal counsel for the Enterprise or on information or records given or reports made to the Enterprise by an
independent certified public accountant or by an appraiser or other expert selected with reasonable care by the Enterprise. In addition, the knowledge and/or actions, or failure to act, of any director, officer, agent or employee of the Enterprise
shall not be imputed to Indemnitee for purposes of determining the right to indemnification under this Agreement. Whether or not the foregoing 

  
 6 

 
provisions of this Section 6(e) are satisfied, it shall in any event be presumed that Indemnitee has at all times acted in good faith and in a manner he reasonably believed to be in
or not opposed to the best interests of the Company. Anyone seeking to overcome this presumption shall have the burden of proof and the burden of persuasion by clear and convincing evidence. 

(f) If the Person empowered or selected under this Section 6 to determine whether Indemnitee is entitled to
indemnification shall not have made a determination within sixty (60) days after receipt by the Company of the request therefor, the requisite determination of entitlement to indemnification shall be deemed to have been made and Indemnitee
shall be entitled to such indemnification absent (i) a misstatement by Indemnitee of a material fact, or an omission of a material fact necessary to make Indemnitee’s statement not materially misleading, in connection with the request for
indemnification, or (ii) a prohibition of such indemnification under applicable law; provided, however, that such 60-day period may be extended for a reasonable time, not to exceed an additional thirty (30) days, if the
Person making such determination with respect to entitlement to indemnification in good faith requires such additional time to obtain or evaluate documentation and/or information relating thereto; and provided, further, that the
foregoing provisions of this Section 6(f) shall not apply if the determination of entitlement to indemnification is to be made by the stockholders pursuant to Section 6(b) of this Agreement and if (A) within fifteen
(15) days after receipt by the Company of the request for such determination, the Board or the Disinterested Directors, if appropriate, resolve to submit such determination to the stockholders for their consideration at an annual meeting
thereof to be held within seventy-five (75) days after such receipt and such determination is made thereat, or (B) a special meeting of stockholders is called within fifteen (15) days after such receipt for the purpose of making such
determination, such meeting is held for such purpose within sixty (60) days after having been so called and such determination is made thereat. 
 (g) Indemnitee shall cooperate with the Person making such determination with respect to Indemnitee’s entitlement to indemnification, including providing to such Person 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 Independent Counsel, member of the Board or
stockholder of the Company shall act reasonably and in good faith in making a determination regarding Indemnitee’s entitlement to indemnification under this Agreement. Any costs or expenses (including reasonable attorneys’ fees and
disbursements) incurred by Indemnitee in so cooperating with the Person making such determination shall be borne by the Company (irrespective of the determination as to Indemnitee’s entitlement to indemnification) and the Company hereby
indemnifies and agrees to hold Indemnitee harmless therefrom. 
 (h) The Company acknowledges that a settlement
or other disposition short of final judgment may be successful if it permits a party to avoid expense, delay, distraction, disruption and uncertainty. In the event that any action, claim or proceeding to which Indemnitee is a party is resolved in
any manner other than by adverse judgment against Indemnitee (including, without limitation, settlement of such action, claim or proceeding with or without payment of money or other consideration) it shall be presumed that Indemnitee has been
successful on the merits or otherwise in such action, suit or proceeding. Anyone seeking to 

  
 7 

 
overcome this presumption shall have the burden of proof and the burden of persuasion by clear and convincing evidence. 

(i) The termination of any Proceeding or of any claim, issue or matter therein, by judgment, order, settlement or
conviction, or upon a plea of nolo contendere or its equivalent, shall not (except as otherwise expressly provided in this Agreement) of itself adversely affect the right of Indemnitee to indemnification or create a presumption that Indemnitee did
not act in good faith and in a manner which he reasonably believed to be in or not opposed to the best interests of the Company or, with respect to any criminal Proceeding, that Indemnitee had reasonable cause to believe that his conduct was
unlawful. 
 7. Remedies of Indemnitee. 

(a) In the event that (i) a determination is made pursuant to Section 6 of this Agreement that Indemnitee
is not entitled to indemnification under this Agreement, (ii) advancement of Expenses is not timely made pursuant to Section 5 of this Agreement, (iii) no determination of entitlement to indemnification is made pursuant to
Section 6(b) of this Agreement within ninety (90) days after receipt by the Company of the request for indemnification, (iv) payment of indemnification is not made pursuant to this Agreement within ten (10) days after
receipt by the Company of a written request therefor or (v) payment of indemnification is not made within ten (10) days after a determination has been made that Indemnitee is entitled to indemnification or such determination is deemed to
have been made pursuant to Section 6 of this Agreement, Indemnitee shall be entitled to an adjudication in an appropriate court of the State of Delaware, or in any other court of competent jurisdiction, of Indemnitee’s entitlement
to such indemnification, contribution or advancement of Expenses. Alternatively, Indemnitee, at his 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. Indemnitee shall commence such proceeding seeking an adjudication or an award in arbitration within 180 days following the date on which Indemnitee first has the right to commence such proceeding pursuant to this
Section 7; provided, however, that the foregoing clause shall not apply in respect of a proceeding brought by Indemnitee to enforce his rights under Section 1(c) of this Agreement. Except as set forth herein,
the provisions of Delaware law (without regard to its conflict-of-law rules) shall apply to any such arbitration. The Company shall not oppose Indemnitee’s right to seek any such adjudication or award in arbitration. 

(b) In the event that a determination shall have been made pursuant to Section 6(b) of this Agreement that
Indemnitee is not entitled to indemnification, any judicial proceeding commenced pursuant to this Section 7 shall be conducted in all respects as a de novo trial, or arbitration, on the merits, and Indemnitee shall not be prejudiced by
reason of the adverse determination under Section 6(b). In any judicial proceeding or arbitration commenced pursuant to this Section 7, Indemnitee shall be presumed to be entitled to indemnification under this Agreement and
the Company shall have the burden of proving Indemnitee is not entitled to indemnification or advancement of Expenses, as the case may be, and the Company may not refer to or introduce into evidence any determination pursuant to
Section 6(b) of this Agreement adverse to Indemnitee for any purpose. If Indemnitee commences a judicial proceeding or arbitration pursuant to this Section 7, Indemnitee shall not be required to reimburse the Company

  
 8 

 
for any advances pursuant to Section 5 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). 
 (c) If a determination shall have been made pursuant to Section 6(b) of this
Agreement that Indemnitee is entitled to indemnification, the Company shall be bound by such determination in any judicial proceeding commenced pursuant to this Section 7, absent (i) a misstatement by Indemnitee of a material fact,
or an omission of a material fact necessary to make Indemnitee’s misstatement not materially misleading, in connection with the application for indemnification, or (ii) a prohibition of such indemnification under applicable law.

 (d) In the event that Indemnitee, pursuant to this Section 7, seeks a judicial adjudication of his
rights under, or to recover damages for breach of, this Agreement, or to recover under any directors’ and officers’ liability insurance policies maintained by the Company, the Company shall pay on his behalf, in advance, any and all
expenses (of the types described in the definition of Expenses in Section 13 of this Agreement) actually and reasonably incurred by him in such judicial adjudication, regardless of whether Indemnitee ultimately is determined to be
entitled to such indemnification, advancement of expenses or insurance recovery, to the fullest extent permitted by applicable law. 
 (e) The Company shall, to the extent not prohibited by law, be precluded from asserting in any judicial proceeding or arbitration commenced pursuant to this Section 7 that the procedures and
presumptions of this Agreement are not valid, binding and enforceable and shall stipulate in any such court or before any such arbitrator that the Company is bound by all the provisions of this Agreement. It is the intent of the Company that, to the
fullest extent permitted by applicable law, Indemnitee not be required to incur legal fees or other Expenses associated with the interpretation, enforcement or defense of Indemnitee’s rights under this Agreement by litigation or otherwise
because the cost and expense thereof would substantially detract from the benefits intended to be extended to Indemnitee hereunder. The Company shall indemnify Indemnitee against any and all Expenses and, if requested by Indemnitee, shall (within
ten (10) days after receipt by the Company of a written request therefor) advance, to the extent not prohibited by law, such expenses to Indemnitee, which are incurred by Indemnitee in connection with any action brought by Indemnitee for
indemnification or advance of Expenses from the Company under this Agreement or under any directors’ and officers’ liability insurance policies maintained by the Company, if, in the case of indemnification, Indemnitee is wholly successful
on the underlying claims; if Indemnitee is not wholly successful on the underlying claims, then such indemnification shall be only to the extent Indemnitee is successful on such underlying claims or otherwise as permitted by law, whichever is
greater. 
 (f) Notwithstanding anything in this Agreement to the contrary, no determination as to entitlement to
indemnification under this Agreement shall be required to be made prior to the final disposition of the Proceeding. 
 8. Non-Exclusivity; Survival of Rights; Insurance; [Primacy of Indemnification;] Subrogation. 

  
 9 

 (a) The rights of indemnification and to receive advancement of Expenses as
provided by this Agreement shall not be deemed exclusive of any other rights to which Indemnitee may at any time be entitled under applicable law, the Certificate of Incorporation of the Company (the “Charter”), the Bylaws, any
agreement, a vote of stockholders, a resolution of directors or otherwise, of the Company. No amendment, alteration or repeal of this Agreement or of any provision hereof shall limit or restrict any right of Indemnitee under this Agreement in
respect of any action taken or omitted by such Indemnitee in his Corporate Status 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 Charter, Bylaws and this Agreement, it is the intent of the parties hereto that Indemnitee shall 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 shall 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, shall not prevent the concurrent assertion or employment of any other right or remedy. 
 (b) The Company shall, if commercially reasonable, obtain and maintain in effect during the entire period for which the Company is obligated to indemnify Indemnitee under this Agreement, one or more
policies of insurance with reputable insurance companies to provide the directors and officers of the Company with coverage for losses from wrongful acts and omissions and to ensure the Company’s performance of its indemnification obligations
under this Agreement. Indemnitee shall be covered by such policy or policies in accordance with its or their terms to the maximum extent of the coverage available for any such officer or director under such policy or policies. In all such insurance
policies, Indemnitee shall be named as an insured in such a manner as to provide Indemnitee with the same rights and benefits as are accorded to the most favorably insured of the Company’s directors and officers. At the time of the receipt of a
notice of a claim pursuant to the terms hereof, the Company shall give prompt notice of the commencement of such proceeding to the insurers in accordance with the procedures set forth in the respective policies. The Company shall thereafter take all
necessary or desirable action to cause such insurers to pay, on behalf of Indemnitee, all amounts payable as a result of such proceeding in accordance with the terms of such policies. 

(c) [The Company hereby acknowledges that Indemnitee has certain rights to indemnification, advancement of expenses and/or
insurance provided by Golden Gate and certain affiliates that, directly or indirectly, (i) are controlled by, (ii) control or (iii) are under common control with, Golden Gate (collectively, the “Fund Indemnitors”).
The Company hereby agrees (i) that it is the indemnitor of first resort (i.e., its obligations to Indemnitee are primary and any obligation of the Fund Indemnitors to advance expenses or to provide indemnification for the same expenses or
liabilities incurred by Indemnitee is secondary), (ii) that it shall be required to advance the full amount of expenses incurred by Indemnitee and shall be liable for the full amount of all Expenses, judgments, penalties, fines and amounts paid
in settlement to the extent legally permitted and as required by the terms of this Agreement and the Charter or Bylaws of the Company (or any other agreement between the Company and Indemnitee), without regard to any rights Indemnitee may have
against the Fund Indemnitors, and (iii) that it irrevocably waives, relinquishes and releases the Fund Indemnitors from any and all claims against the Fund Indemnitors for contribution, subrogation or any other recovery of

  
 10 

 
any kind in respect thereof. The Company further agrees that no advancement or payment by the Fund Indemnitors on behalf of Indemnitee with respect to any claim for which Indemnitee has sought
indemnification from the Company shall affect the foregoing and the Fund Indemnitors shall have a right of contribution and/or be subrogated to the extent of such advancement or payment to all of the rights of recovery of Indemnitee against the
Company. The Company and Indemnitee agree that the Fund Indemnitors are express third party beneficiaries of the terms of this Section 8(c).] 
 (d) [Except as provided in Section 8(c) above,] in the event of any payment under this Agreement, the Company shall be subrogated to the extent of such payment to all of the rights of recovery
of Indemnitee [(other than against the Fund Indemnitors)], who shall 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. 
 (e) [Except as provided in Section 8(c) above,] the Company shall not be
liable under this Agreement to make any payment of amounts otherwise indemnifiable hereunder if and to the extent that Indemnitee has otherwise actually received such payment under any insurance policy, contract, agreement or otherwise. 

(f) [Except as provided in Section 8(c) above,] the Company’s obligation to indemnify or advance Expenses
hereunder to Indemnitee who is or was serving at the request of the Company as a director, officer, employee or agent of any other corporation, partnership, joint venture, trust, employee benefit plan or other enterprise shall be reduced by any
amount Indemnitee has actually received as indemnification or advancement of expenses from such other corporation, partnership, joint venture, trust, employee benefit plan or other enterprise. 

9. Exception to Right of Indemnification. Notwithstanding any provision in this Agreement, the Company shall not be
obligated under this Agreement to make any indemnity in connection with any claim made against Indemnitee: 
 (a)
for which payment has actually been made to or on behalf of Indemnitee under any insurance policy or other indemnity provision, except with respect to any excess beyond the amount paid under any insurance policy or other indemnity provision;
[provided, that the foregoing shall not affect the rights of Indemnitee or the Fund Indemnitors set forth in Section 8(c) above]; or 
 (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 (as
hereinafter defined), or similar provisions of state statutory law or common law; or 
 (c) for reimbursement to
the Company of any bonus or other incentive-based or equity-based compensation or of any profits realized by Indemnitee from the sale of securities of the Company in each case as required under the Exchange Act; or 

  
 11 

 (d) in connection with any Proceeding (or any part of any Proceeding)
initiated by Indemnitee, including any Proceeding (or any part of any Proceeding) initiated by Indemnitee against the Company or its directors, officers, employees or other indemnitees, unless (i) the Company has joined in or the Board
authorized the Proceeding (or any part of any Proceeding) prior to its initiation, (ii) the Company provides the indemnification, in its sole discretion, pursuant to the powers vested in the Company under applicable law, or (iii) the
Proceeding is one to enforce Indemnitee’s rights under this Agreement. 
 10. Non–Disclosure of
Payments. Except as expressly required by the securities laws of the United States of America, neither party shall disclose any payments under this Agreement unless prior approval of the other party is obtained. If any payment information must
be disclosed, the Company shall afford the Indemnitee an opportunity to review all such disclosures and, if requested, to explain in such statement any mitigating circumstances regarding the events to be reported. 

11. Duration of Agreement. All agreements and obligations of the Company contained herein shall continue until and
terminate upon the later of (i) fifteen (15) years after the date that Indemnitee shall have ceased to serve as a director or officer of the Company or a director, officer, trustee, partner, managing member, fiduciary, employee or agent of
any other corporation, partnership, joint venture, trust, employee benefit plan or other enterprise which Indemnitee served at the request of the Company, and (ii) one (1) year after the final termination of any Proceeding (including any
rights of appeal thereto) in respect of which Indemnitee is granted rights of indemnification or advancement of Expenses hereunder and of any Proceeding commenced by Indemnitee pursuant to Section 7 of this Agreement relating thereto
(including any rights of appeal of any Section 7 Proceeding). This Agreement shall be binding upon and inure to the benefit of and be enforceable by the parties hereto and their respective successors (including any direct or indirect
successor by purchase, merger, consolidation or otherwise to all or substantially all of the business or assets of the Company), assigns, spouses, heirs, executors and personal and legal representatives. 

12. Security. To the extent requested by Indemnitee and approved by the Board, the Company may at any time and from
time to time provide security to Indemnitee for the Company’s obligations hereunder through an irrevocable bank line of credit, funded trust or other collateral. Any such security, once provided to Indemnitee, may not be revoked or released
without the prior written consent of Indemnitee. 
 13. Definitions. For purposes of this Agreement:

 (a) “Beneficial Owner” shall have the meaning given to such term in Rule 13d-3 under the
Exchange Act; provided, however, that Beneficial Owner shall exclude any Person otherwise becoming a Beneficial Owner by reason of the stockholders of the Company approving a merger of the Company with another entity. 

(b) “Change in Control” shall be deemed to occur upon the earliest to occur after the date of this
Agreement of any of the following events: 
 (i) Acquisition of Stock by Third Party. Any Person (as

  
 12 

 
defined below), other than Golden Gate and its affiliates and other than a trustee or other fiduciary holding securities under an employee benefit plan of the Company or a corporation owned
directly or indirectly by the stockholders of the Company in substantially the same proportions as their ownership of stock of the Company, is or becomes the Beneficial Owner (as defined above), directly or indirectly, of securities of the Company
representing more than 50% of the combined voting power of the Company’s then outstanding securities, unless the change in relative Beneficial Ownership of the Company’s securities by any Person results solely from a reduction in the
aggregate number of outstanding securities entitled to vote generally in the election of directors; 
 (ii)
Change in Board of Directors. During any period of two (2) consecutive years (not including any period prior to the execution of this Agreement), individuals who at the beginning of such period constitute the Board, and any new director
(other than a director designated by a Person who has entered into an agreement with the Company to effect a transaction described in Section 13(b)(i), 13(b)(iii) or 13(b)(iv)) whose election by the Board or nomination for
election by the Company’s stockholders was approved by a vote of at least two-thirds of the directors then still in office who either were directors at the beginning of the period or whose election or nomination for election was previously so
approved, cease for any reason to constitute at least a majority of the members of the Board; 
 (iii)
Corporate Transactions. The effective date of a merger or consolidation of the Company with any other entity, other than a merger or consolidation which would result in the voting securities of the Company outstanding immediately prior to
such merger or consolidation continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity) more than 50% of the combined voting power of the voting securities of the surviving entity
outstanding immediately after such merger or consolidation and with the power to elect at least a majority of the board of directors or other governing body of such surviving entity; and 

(iv) Liquidation. The approval by the stockholders of the Company of a complete liquidation of the Company or an
agreement or series of agreements for the sale or disposition by the Company of all or substantially all of the Company’s assets, or, if such approval is not required, the decision by the Board to proceed with such a liquidation, sale, or
disposition in one transaction or a series of related transactions. 

  
 13 

 (c) “Corporate Status” describes the status of a person who
is or was a director, officer, employee, agent or fiduciary of the Company, any direct or indirect subsidiary of the Company, or of any other corporation, partnership, joint venture, trust, employee benefit plan or other enterprise that such person
is or was serving at the express written request of the Company. 
 (d) “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. 
 (e) “Enterprise” shall mean the Company and any other corporation, partnership, joint venture, trust, employee benefit plan or other enterprise that Indemnitee is or was serving at the
request of the Company as a director, officer, trustee, partner, managing member, employee, agent or fiduciary. 

(f) “Exchange Act” shall mean the Securities Exchange Act of 1934, as amended. 

(g) “Expenses” shall include all reasonable attorneys’ fees, retainers, court costs, transcript
costs, fees of experts and other professionals, witness fees, travel expenses, duplicating costs, printing and binding costs, telephone charges, postage, delivery service fees and all other disbursements or expenses of the types customarily incurred
in connection with prosecuting, defending, preparing to prosecute or defend, investigating, participating, or being or preparing to be a witness in a Proceeding, or responding to, or objecting to, a request to provide discovery in any Proceeding.
Expenses also shall include Expenses incurred in connection with any appeal resulting from any Proceeding and any federal, state, local or foreign taxes imposed on Indemnitee as a result of the actual or deemed receipt of any payments under this
Agreement, including without limitation the premium, security for, and other costs relating to any cost bond, supersedeas bond, or other appeal bond or its equivalent. Expenses, however, shall not include amounts paid in settlement by Indemnitee or
the amount of judgments or fines against Indemnitee. 
 (h) “Independent Counsel” means a law
firm, or a member of a law firm, that is experienced in matters of corporation law and neither presently 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 Indemnitee under this Agreement, 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” shall 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. The Company agrees to pay the reasonable fees and disbursements of the Independent Counsel referred to above and to fully indemnify such counsel against
any and all Expenses, claims, liabilities and damages arising out of or relating to this Agreement or its engagement pursuant hereto. 

  
 14 

 (i) “Person” shall have the meaning as set forth in
Sections 13(d) and 14(d) of the Exchange Act; provided, however, that Person shall exclude (i) the Company, (ii) any trustee or other fiduciary holding securities under an employee benefit plan of the Company, and
(iii) any corporation owned, directly or indirectly, by the stockholders of the Company in substantially the same proportions as their ownership of stock of the Company. 

(j) “Proceeding” includes any threatened, pending or completed action, suit, arbitration, alternate
dispute resolution mechanism, investigation, inquiry, administrative hearing or any other actual, threatened or completed proceeding, whether brought by or in the right of the Company or otherwise and whether civil, criminal, administrative or
investigative, in which Indemnitee was, is or will be involved as a party or otherwise, by reason of the fact that Indemnitee is or was an officer or director of the Company, by reason of any action taken by him or of any inaction on his part while
acting as an officer or director of the Company, or by reason of the fact that he is or was serving at the request of the Company as a director, officer, employee, agent or fiduciary of another corporation, partnership, joint venture, trust or other
enterprise; in each case whether or not he is acting or serving in any such capacity at the time any liability or expense is incurred for which indemnification can be provided under this Agreement; including one pending on or before the date of this
Agreement, but excluding one initiated by an Indemnitee pursuant to Section 7 of this Agreement to enforce his rights under this Agreement. 
 14. Severability. If any provision or provisions of this Agreement shall be held to be invalid, illegal or unenforceable for any reason whatsoever: (i) the validity, legality, and
enforceability of the remaining provisions of this Agreement (including, without limitation, each portion of any Section, paragraph or sentence of this Agreement containing any such provision held to be invalid, illegal or unenforceable, that is not
itself invalid, illegal or unenforceable) shall not in any way be affected or impaired thereby and shall remain enforceable to the fullest extent permitted by law; (ii) such provision or provisions shall be deemed reformed to the fullest extent
necessary to conform to applicable law and to give the maximum effect to the intent of the parties hereto; and (iii) to the fullest extent possible, the provisions of this Agreement (including, without limitation, each portion of any Section,
paragraph or sentence of this Agreement containing any such provision held to be invalid, illegal or unenforceable, that is not itself invalid, illegal or unenforceable) shall be construed so as to give effect to the intent manifested thereby.
Without limiting the generality of the foregoing, this Agreement is intended to confer upon Indemnitee indemnification rights to the fullest extent permitted by applicable laws. 

15. Enforcement and Binding Effect. 

(a) The Company expressly confirms and agrees that it has entered into this Agreement and assumed the obligations imposed
on it hereby in order to induce Indemnitee to serve as a director, officer or key employee of the Company, and the Company acknowledges that Indemnitee is relying upon this Agreement in serving as a director, officer or key employee of the Company.

 (b) Without limiting any of the rights of Indemnitee under the Charter or Bylaws of the Company as they may be
amended from time to time, this Agreement 

  
 15 

 
constitutes the entire agreement between the parties hereto with respect to the subject matter hereof and supersedes all prior agreements and understandings, oral, written and implied, between
the parties hereto with respect to the subject matter hereof. 
 (c) The indemnification and advancement of
expenses provided by, or granted pursuant to, this Agreement shall be binding upon and be enforceable by the parties hereto and their respective successors and assigns (including any direct or indirect successor by purchase, merger, consolidation or
otherwise to all or substantially all of the business or assets of the Company), shall continue as to an Indemnitee who has ceased to be a director, officer, employee or agent of the Company or of any other Enterprise at the Company’s request,
and shall inure to the benefit of Indemnitee and his spouse, assigns, heirs, devisees, executors and administrators and other legal representatives. 
 (d) The Company shall require and cause any successor (whether direct or indirect by purchase, merger, consolidation or otherwise) to all or substantially all of the business and/or assets of the Company
to expressly assume and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform if no such succession had taken place. 

(e) The Company and Indemnitee agree herein that a monetary remedy for breach of this Agreement, at some later date, may
be inadequate, impracticable and difficult of proof, and further agree that such breach may cause Indemnitee irreparable harm. Accordingly, the parties hereto agree that Indemnitee may enforce this Agreement by seeking injunctive relief and/or
specific performance hereof, without any necessity of showing actual damage or irreparable harm and that by seeking injunctive relief and/or specific performance, Indemnitee shall not be precluded from seeking or obtaining any other relief to which
he may be entitled. The Company and Indemnitee further agree that Indemnitee shall be entitled to such specific performance and injunctive relief, including temporary restraining orders, preliminary injunctions and permanent injunctions, without the
necessity of posting bonds or other undertaking in connection therewith. The Company acknowledges that in the absence of a waiver, a bond or undertaking may be required of Indemnitee by the court, and the Company hereby waives any such requirement
of such a bond or undertaking. 
 16. Modification and Waiver. No supplement, modification, termination or
amendment of this Agreement shall be binding unless executed in writing by both of the parties hereto. No waiver of any of the provisions of this Agreement shall be deemed or shall constitute a waiver of any other provisions hereof (whether or not
similar) nor shall such waiver constitute a continuing waiver. 
 17. Notice By Indemnitee. Indemnitee
agrees promptly to notify the Company in writing upon being served with or otherwise receiving any summons, citation, subpoena, complaint, indictment, information or other document relating to any Proceeding or matter which may be subject to
indemnification covered hereunder. The failure to so notify the Company shall not relieve the Company of any obligation which it may have to Indemnitee under this Agreement or otherwise unless and only to the extent that such failure or delay
materially prejudices the Company. 

  
 16 

 18. Notices. All notices and other communications given or made
pursuant to this Agreement shall be in writing and shall be deemed effectively given: (i) upon personal delivery to the party to be notified, (ii) when sent by confirmed electronic mail or facsimile if sent during normal business hours of
the recipient, and if not so confirmed, then on the next business day, (iii) five (5) days after having been sent by registered or certified mail, return receipt requested, postage prepaid, or (iv) one (1) day after deposit with
a nationally recognized overnight courier, specifying next day delivery, with written verification of receipt. All communications shall be sent: 
 (a) To Indemnitee at the address set forth below Indemnitee’s signature hereto. 
 (b) To the Company at: 
 U.S. Silica Holdings, Inc. 

8490 Progress Drive, Suite 300 
 Frederick, Maryland 21701 
 Attention: General Counsel 

Fax: (304) 258-8295 
 or to such other address as may have been furnished to Indemnitee by the Company or to the Company by Indemnitee, as the case may be. 

19. Counterparts. This Agreement may be executed in two or more counterparts, each of which shall be deemed an
original, but all of which together shall constitute one and the same Agreement. This Agreement may also be executed and delivered by facsimile signature and in two or more counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument. 
 20. Headings. The headings of the paragraphs of
this Agreement are inserted for convenience only and shall not be deemed to constitute part of this Agreement or to affect the construction thereof. 
 21. Usage of Pronouns. Use of the masculine pronoun shall be deemed to include usage of the feminine pronoun where appropriate. 

22. Governing Law and Consent to Jurisdiction. This Agreement and the legal relations among the parties shall be
governed by, and construed and enforced in accordance with, the laws of the State of Delaware, without regard to its conflict-of-laws rules. Except with respect to any arbitration commenced by Indemnitee pursuant to Section 7 of this
Agreement, the Company and Indemnitee hereby irrevocably and unconditionally (i) agree that any action or proceeding arising out of or in connection with this Agreement shall be brought only in the Chancery Court of the State of Delaware (the
“Delaware Court”), and not in any other state or federal court in the United States of America or any court in any other country, (ii) consent to submit to the exclusive jurisdiction of the Delaware Court for purposes of any
action or proceeding arising out of or in connection with this Agreement, (iii) appoint, to the extent such party is not otherwise subject to service of process in the State of Delaware, irrevocably Walkers Corporate Services Delaware Ltd., 200
Bellevue Parkway, Suite 170, Wilmington, Delaware 19809 

  
 17 

 
as its agent in the State of Delaware as such party’s agent for acceptance of legal process in connection with any such action or proceeding against such party with the same legal force and
validity as if served upon such party personally within the State of Delaware, (iv) waive any objection to the laying of venue of any such action or proceeding in the Delaware Court, and (v) waive, and agree not to plead or to make, any
claim that any such action or proceeding brought in the Delaware Court has been brought in an improper or inconvenient forum. The foregoing consent to jurisdiction shall not constitute general consent to service of process in the state for any
purpose except as provided above, and shall not be deemed to confer rights on any Person other than the parties to this Agreement. 
 [THE REMAINDER OF THIS PAGE IS INTENTIONALLY LEFT BLANK.] 

  
 18 

 IN WITNESS WHEREOF, the parties hereto have executed this Agreement on and as of the
day and year first written above. 
  

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

  

			
	INDEMNITEE
		
		 	 
		 	Name:
		
		 	Address:
		 	 
		 	 
		 	 
		 	 

 SIGNATURE PAGE TO 

INDEMNIFICATION AGREEMENT

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