Document:

EX-10.9

 Exhibit 10.9 
  

 
  
  

 
 STOCKHOLDERS AGREEMENT 

BY AND AMONG 
 SOTERA
HEALTH COMPANY 
 AND 

THE STOCKHOLDERS PARTY HERETO 

Dated as of [●], 2020 
  

 
  

 TABLE OF CONTENTS 

 

							
	 	 	 	  	Page	 
	
	ARTICLE I	  

	
	DEFINITIONS	  

	 Section 1.01.
	 	Certain Definitions	  	 	1	 
	 Section 1.02.
	 	Other Interpretive Provisions	  	 	6	 
	
	ARTICLE II	  

	
	CORPORATE GOVERNANCE	  

	 Section 2.01.
	 	The Board	  	 	7	 
	 Section 2.02.
	 	Indemnification	  	 	10	 
	 Section 2.03.
	 	Financial Statements and Reports	  	 	12	 
	 Section 2.04.
	 	Certain Acknowledgments	  	 	13	 
	 Section 2.05.
	 	Voting Agreement; Certain Actions	  	 	13	 
	 Section 2.06.
	 	Committees	  	 	14	 
	
	ARTICLE III	  

	
	APPROVAL RIGHTS	  

	 Section 3.01.
	 	Required Approvals	  	 	15	 
	 Section 3.02.
	 	Termination of Required Approvals	  	 	16	 
	
	ARTICLE IV	  

	
	TRANSFERS	  

	 Section 4.01.
	 	Limitations on Transfer	  	 	16	 
	 Section 4.02.
	 	Rights and Obligations of Transferees	  	 	17	 
	 Section 4.03.
	 	Legends	  	 	18	 
	 Section 4.04.
	 	Notice	  	 	19	 
	
	ARTICLE V	  

	
	REPRESENTATIONS AND WARRANTIES	  

	 Section 5.01.
	 	Representations and Warranties of the Parties	  	 	19	 
	 Section 5.02.
	 	Entitlement of the Parties to Rely on Representations and Warranties	  	 	20	 

  
 - i - 

 TABLE OF CONTENTS 

(continued) 
  

							
	 	 	 	  	Page	 
	ARTICLE VI	  

	
	MISCELLANEOUS	  

	 Section 6.01.
	 	Termination	  	 	20	 
	 Section 6.02.
	 	Certificate of Incorporation and By-Laws	  	 	20	 
	 Section 6.03.
	 	Corporate Opportunity	  	 	20	 
	 Section 6.04.
	 	Publicity	  	 	21	 
	 Section 6.05.
	 	Sharing of Information	  	 	22	 
	 Section 6.06.
	 	Notices	  	 	22	 
	 Section 6.07.
	 	Amendments	  	 	23	 
	 Section 6.08.
	 	Governing Law; Jurisdiction	  	 	23	 
	 Section 6.09.
	 	Waiver of Jury Trial	  	 	24	 
	 Section 6.10.
	 	Entire Agreement	  	 	24	 
	 Section 6.11.
	 	Waivers	  	 	24	 
	 Section 6.12.
	 	Successors and Assigns	  	 	24	 
	 Section 6.13.
	 	Severability	  	 	24	 
	 Section 6.14.
	 	Further Assurances	  	 	25	 
	 Section 6.15.
	 	Counterparts; Electronic Signatures	  	 	25	 
	 Section 6.16.
	 	Third Party Beneficiaries	  	 	25	 
	 Section 6.17.
	 	No Third Party Liability	  	 	25	 
	 Section 6.18.
	 	Binding Effect; Assignment	  	 	25	 
	 Section 6.19.
	 	Specific Performance	  	 	26	 
	 Section 6.20.
	 	Time of the Essence	  	 	26	 
	 Section 6.21.
	 	No Promotion	  	 	26	 
	 Section 6.22.
	 	Exculpation Among Stockholders	  	 	26	 

  
 - ii - 

 STOCKHOLDERS AGREEMENT 

This STOCKHOLDERS AGREEMENT (this “Agreement”), dated as of [•], 2020, is entered into by and among Sotera Health
Company, a Delaware corporation (the “Company”), and each of the stockholders of the Company whose name appears on the signature pages hereto and any Person (as defined below) who executes a Joinder Agreement in the form of
Exhibit A hereto (each, a “Stockholder” and collectively, the “Stockholders”). 
 WITNESSETH:

 WHEREAS, the Company is currently contemplating an initial public offering (the “IPO”) of shares of its common stock,
par value $0.01 per share; 
 WHEREAS, each Stockholder that is party to this Agreement on the date hereof is also a limited partner of
Sotera Health Topco Parent, L.P. (“Topco Parent”), a Delaware limited partnership and a party to the amended and restated agreement of limited partnership of Topco Parent dated as of June 30, 2020 (the “LPA”);

 WHEREAS, the Company was a direct wholly-owned Subsidiary of Topco Parent and on the date hereof, Topco Parent distributed its Common
Stock to the limited partners of Topco Parent and such limited partners became the stockholders of the Company; and 
 WHEREAS, in
connection with, and effective upon, the execution of the underwriting agreement to be entered into in connection with the Company’s proposed IPO, the Company and the Stockholders wish to set forth certain understandings between such parties,
including with respect to certain governance matters. 
 NOW, THEREFORE, in consideration of the mutual promises of the parties hereto, and
of other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, it is mutually agreed by and among the Company and the Stockholders as follows: 

ARTICLE I 
 DEFINITIONS

 Section 1.01.    Certain Definitions. As used in this Agreement, the following terms have the
following meanings: 
 “Affiliate” means, with respect to any Person, any other Person that directly or indirectly
Controls, is Controlled by, or is under common Control with, such Person; provided, that no Stockholder shall be deemed an Affiliate of the Company or any of its Subsidiaries or Topco Parent for purposes of this Agreement; provided,
further, that no securityholder of the Company shall be deemed an Affiliate of any other securityholder of the Company solely by reason of an investment in the Company; and provided, further, that a portfolio company of a
Sponsor shall not be deemed to be an Affiliate of such Sponsor. 
 “Agreement” has the meaning set forth in the preamble.

  
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 “Board” means the board of directors of the Company. 

“Business Day” means any day of the year on which national banking institutions in New York, New York are open to the public
for conducting business and are not required or authorized to close. 
 “Closing” means the closing of the IPO. 

“Co-Invest LPA” means the Amended and Restated Agreement of Limited Partnership of
the Co-Investor, dated as of May 15, 2015. 

“Co-Invest Partner” means a Person (other than Warburg Pincus) who is or was a
limited partner in the Co-Investor. 

“Co-Investor” means Bull Co-Invest L.P.,
which shall act through the WP Designated Sponsor Fund except as expressly provided otherwise herein. 
 “Common Stock”
means the common stock, par value $0.01 per share, of the Company and any securities issued in respect thereof, or in substitution therefor, in connection with any stock split, stock dividend or combination, or any reclassification,
recapitalization, merger, consolidation, share exchange or other similar reorganization. 
 “Company” has the meaning set
forth in the preamble. 
 “Company Confidential Information” has the meaning set forth in
Section 6.05. 
 “Company Shares” means issued and outstanding shares of Common Stock. 

“Control” means the possession, directly or indirectly, of the power to direct or cause the direction of the management and
policies of a Person, whether through the ownership of voting securities, by contract or otherwise, and “Controlled” has a correlative meaning. 

“Credit Agreement” means that certain Credit Agreement, dated as of December 13, 2019, by and among the Company, Sotera
Health Holdings, LLC, a Delaware limited liability company and direct wholly-owned Subsidiary of the Company, the lenders and issuing banks party thereto and JEFFERIES FINANCE LLC, as first lien administrative agent and first lien collateral agent,
together with all other agreements and documents entered into pursuant to the terms thereof or in connection therewith, in all cases, as amended, modified or supplemented from time to time, and any successor credit agreement or other financing used
to refinance the initial credit agreement or any subsequent agreement. 
 “Designated Sponsor Directors” means the WP
Directors and the GTCR Directors, collectively. 
 “Designated Sponsor Fund” means the WP Designated Sponsor Fund or the
GTCR Designated Sponsor Fund, or both, as the context requires. 
 “Director Indemnitee” has the meaning set forth in
Section 2.02(b)(ii). 

  
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 “Exchange Act” means the Securities Exchange Act of 1934, as amended from
time to time, and the rules and regulations promulgated thereunder. 
 “External Recipients” has the meaning set forth in
Section 6.05. 
 “Existing Shares” has the meaning set forth in
Section 4.01(a). 
 “Fund Indemnitors” has the meaning set forth in
Section 2.02(b)(ii). 
 “GTCR” means GTCR Fund XI/A VCOC, GTCR Fund XI/C VCOC, GTCR Co-Invest XI LP and their respective Affiliates. 
 “GTCR Designated Sponsor Fund” means
each of the GTCR Fund XI/A VCOC and the GTCR Fund XI/C VCOC or such other GTCR Stockholder designated by GTCR (in writing to the Partnership) as a GTCR Designated Sponsor Fund from time to time. For purposes of the rights of a Designated Sponsor
Fund under this Agreement, all GTCR Designated Sponsor Funds shall collectively be regarded as a single Designated Sponsor Fund. 

“GTCR Director” has the meaning set forth in Section 2.01(c)(ii). 

“GTCR Fund XI/A VCOC” means GTCR Fund XI/A LP. 

“GTCR Fund XI/C VCOC” means GTCR Fund XI/C LP. 

“GTCR Stockholders” means, collectively, GTCR Fund XI/A VCOC, GTCR Fund XI/C VCOC, GTCR
Co-Invest XI LP and their respective Affiliates that are, from time to time, stockholders of the Company, each of which shall act through the applicable GTCR Designated Sponsor Fund except as expressly
provided otherwise herein. 
 “Identified Person” has the meaning set forth in Section 6.03(a).

 “Indemnification Agreements” has the meaning set forth in Section 2.01(i)(ii). 

“Indenture” means that certain Indenture, dated as of the December 13, 2019, by and among the Company, Sotera Health
Holdings, LLC, a Delaware limited liability company and direct wholly-owned Subsidiary of the Company, as issuer, the subsidiary note parties party thereto and Wilmington Trust, National Association, as second lien notes collateral agent,
calculation agent and trustee, together with all other agreements and documents entered into pursuant to the terms thereof or in connection therewith, in all cases, as amended, modified or supplemented from time to time, and any successor indenture
or any subsequent agreement. 
 “Initial Holding Period” has the meaning set forth in
Section 4.01(a). 
 “Investment Company Act” means the Investment Company Act of 1940, as amended
from time to time, and the rules and regulations promulgated thereunder. 
 “Internal Recipients” has the meaning set forth
in Section 6.05. 
 “IPO” has the meaning set forth in the recitals. 

  
 3 

 “LPA” has the meaning set forth in the recitals. 

“Management Stockholder” means a Stockholder (including, with respect to any estate planning, personal services or similar
vehicle, its Affiliates) who provides or has in the past provided Services. 
 “Necessary Action” means, with respect to a
specified result, all actions (to the extent permitted by applicable laws and stock exchange regulations) necessary to cause such result, including (i) voting or providing a written consent or proxy with respect to the Company Shares,
(ii) calling and attending meetings in person or by proxy for purposes of obtaining a quorum and causing the adoption of stockholders’ resolutions and amendments to the Company’s certificate of incorporation or by-laws, (iii) causing members of the Board (to the extent such members were nominated or designated by the Person obligated to undertake the Necessary Action, and subject to any fiduciary duties that such
members may have as directors of the Company) to act in a certain manner or causing them to be removed in the event they do not act in such a manner, (iv) executing agreements and instruments, and (v) making, or causing to be made, with
governmental, administrative or regulatory authorities, all filings, registrations or similar actions that are required to achieve such result. 

“Parties” means the Company and the Stockholders. 

“Permitted Recipients” has the meaning set forth in Section 6.05. 

“Permitted Transferee” means with respect to any Management Stockholder, any spouse, lineal descendant, parent, heir,
sibling, executor, administrator, testamentary trust, trustee or legatee of such Management Stockholder or any trust or other Person in which the sole (direct or indirect) beneficiaries or other equity holders thereof are such Management Stockholder
or any of the other Persons referred to herein. 
 “Person” means any individual, corporation, partnership, limited
liability company, joint venture, association, joint-stock company, trust, unincorporated organization, governmental entity or any other entity. 

“Preferred Stock” means any preferred stock, par value $0.01 per share, of the Company and any securities issued in respect
thereof, or in substitution therefor, in connection with any stock split, dividend or combination, or any reclassification, recapitalization, merger, consolidation, exchange or other similar reorganization. 

“Public Offering” means any public offering and sale of equity securities of the Company or its successor for cash pursuant
to an effective registration statement (other than on Form S-4, S-8 or a comparable form) under the Securities Act. 

“Private Sale” means a sale of Company Shares for consideration in a privately negotiated transaction, including a block
trade (but for the avoidance of doubt, a Private Sale shall exclude a Public Sale, any distribution-in-kind by the Sponsors to direct or indirect limited partners and a
Transfer by a Sponsor to an Affiliate). 

  
 4 

 “Private Sale Eligible Shares” means, with respect to a Management
Stockholder, a number of Company Shares equal to the product of (i) the number of Company Shares then owned by Management Stockholder subject to the restrictions on Transfer set forth in Section 4.01 multiplied
by (ii) a fraction, the numerator of which is the number of Company Shares sold by the Sponsors in a Private Sale and the denominator of which is the total number of Company Shares held by Sponsors immediately prior to such Private Sale.

 “Public Sale” means any sale of Company Shares (i) to the public pursuant to an offering registered under the
Securities Act or (ii) to the public through a broker, dealer or market maker pursuant to the provisions of Rule 144 promulgated under the Securities Act. 

“Public Sale Eligible Shares” means, with respect to a Management Stockholder, a number of Company Shares equal to the
product of (i) the number of Company Shares then owned by Management Stockholder subject to the restrictions on Transfer set forth in Section 4.01 multiplied by (ii) a fraction, the numerator of which is
the number of Company Shares sold by the Sponsors in such Public Sale and the denominator of which is the total number of Company Shares held by Sponsors immediately prior to such Public Sale. 

“Registration Rights Agreement” means the Amended and Restated Registration Rights Agreement dated as of the date hereof, by
and among the WP Stockholders, the GTCR Stockholders, the Co-Investor, the Company and the other parties thereto, as amended, modified or supplemented from time to time. 

“Securities Act” means the Securities Act of 1933, as amended from time to time, and the rules and regulations promulgated
thereunder. 
 “Services” means the provision of services to Topco Parent, the Company or any of their respective
Subsidiaries as an employee, manager, director or independent contractor of Topco Parent or the Company or as an employee, manager, director or independent contractor of any of their respective Subsidiaries. 

“Sponsor” means either (i) the WP Stockholders together or (ii) the GTCR Stockholders together, and
“Sponsors” means, collectively, the WP Stockholders and the GTCR Stockholders. 
 “Sponsor Affiliated
Person” has the meaning set forth in Section 6.05. 
 “Stockholder” has the meaning set
forth in the preamble. 
 “Stockholders” has the meaning set forth in the preamble. 

“Subsidiary” of any Person means any Person (i) of which a majority of the outstanding voting securities or other voting
equity interests are owned, directly or indirectly, by such first Person or any Subsidiary of such first Person or (ii) with respect to which such Person or any of its Subsidiaries is a general partner or managing member or is allocated or has
the right to be allocated (through partnership interests or otherwise) a majority of such second Person’s gains or losses; provided, that the Company shall not be deemed a Subsidiary of any Sponsor. 

  
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 “Transfer” means, with respect to any Company Shares, a direct or indirect
transfer, sale, exchange, assignment, pledge, hypothecation or other encumbrance or other disposition of such Company Shares, including by way of a merger, consolidation, division, share exchange, business combination or otherwise, including the
grant of an option or other right, whether directly or indirectly, whether voluntarily, involuntarily or by operation of law. 

“Topco Parent” has the meaning set forth in the recitals. 

“Trading Day” means a day on which the Company Shares are traded on the Nasdaq Global Select Market or any other market in
which such securities are quoted for purchase and sale. 
 “Transferred”, “Transferring” and
“Transferee” shall each have a correlative meaning to the term “Transfer.” 
 “VWAP”
means the volume weighted average of the trading prices of shares of the Company Shares on the Nasdaq Global Select Market or any other market in which such securities are quoted for purchase and sale (as reported by Bloomberg L.P. or, if not
reported therein, in another authoritative source mutually selected by the parties) during the twenty (20) consecutive Trading Days preceding the date of a Transfer; provided that if, from the beginning of the twenty-first (21st) Trading Day
prior to the date of such Transfer until the date of such Transfer, there shall occur any change, or the record date for any change, in the outstanding shares of Company Shares as a result of any reclassification, recapitalization, stock split or
combination, exchange or readjustment of shares, or any stock dividend, in each case other than pursuant to the terms of any equity-based compensation or incentive plan sponsored by the Company that is in effect and disclosed by the Company with the
SEC prior to such date, the VWAP shall be equitably adjusted to reflect such change. 
 “Warburg Pincus” means Warburg
Pincus Private Equity XI, L.P. and its Affiliates (other than the Co-Investor). 
 “WP
Designated Sponsor Fund” means Warburg Pincus Private Equity XI, L.P. or one of its Affiliates designated by Warburg Pincus (in writing to the Company) as the WP Designated Sponsor Fund from time to time. 

“WP Director” has the meaning set forth in Section 2.01(c)(i). 

“WP Stockholders” means, collectively, Warburg Pincus Private Equity XI, L.P., Warburg Pincus XI Partners, L.P., WP XI
Partners, L.P., Warburg Pincus Private Equity XI-B, L.P., Warburg Pincus Private Equity XI-C, L.P., the Co-Investor and their
respective Affiliates that are, from to time, stockholders of the Company, each of which shall act through the WP Designated Sponsor Fund except as expressly provided otherwise herein. 

Section 1.02.    Other Interpretive Provisions. (a) The meanings of defined terms are equally applicable
to the singular and plural forms of the defined terms. 

  
 6 

 (a)    The words “hereof”, “herein”,
“hereunder” and similar words refer to this Agreement as a whole and not to any particular provision of this Agreement; and subsection, Section and Exhibit references are to this Agreement unless otherwise specified. 

(b)    The term “including” is not limiting and means “including without limitation.”

 (c)    The captions and headings of this Agreement are for convenience of reference only and shall not affect the
interpretation of this Agreement. 
 (d)    Whenever the context requires, any pronouns used herein shall include the
corresponding masculine, feminine or neuter forms. 
 (e)    For all purposes under this Agreement, when determining the
percentage represented by the number of Company Shares owned by any Stockholder at any time relative to the number of Company Shares owned by such Stockholder as of immediately following the Closing, such determination shall be equitably adjusted to
appropriately account for any stock split, reverse stock split, stock dividend (including any dividend or distribution of securities convertible into capital stock), reorganization, reclassification, combination, recapitalization or other like
change with respect to the Company Shares occurring after the Closing and prior to such determination, to the extent necessary to provide the parties with the same effect as contemplated by this Agreement prior to such stock split, reverse stock
split, stock dividend, reorganization, reclassification, combination, recapitalization or other like change. 
 ARTICLE II 

CORPORATE GOVERNANCE 

Section 2.01.    The Board. 

(a)    Composition of Initial Board. Prior to the Closing, the Sponsors shall take all Necessary Action to cause:
(i) the Board, as of immediately following the Closing, to comprise the following nine (9) directors: James C. Neary, Stephanie Geveda, Ruoxi Chen, David A. Donnini, Constantine S. Mihas, Sean L. Cunningham, Michael B. Petras, Jr., Ann R.
Klee, and Vincent K. Petrella and (ii) the Chairman of the Board, as of immediately following the Closing, to be Michael B. Petras, Jr. 

(b)    Classified Board. 

(i)    The Board shall be divided into three (3) classes of directors as follows: (A) the initial
class I directors shall include James C. Neary, Constantine Mihas and Michael B. Petras, Jr., (B) the initial class II directors shall include Ruoxi Chen, David A. Donnini and Ann R. Klee, and (C) the initial class III
directors shall include Stephanie Geveda, Sean L. Cunningham and Vincent K. Petrella. 
 (ii)    The
initial term of the class I directors shall expire at the first annual meeting of the stockholders following the date hereof at which directors 

  
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are elected. The initial term of the class II directors shall expire at the second annual meeting of the stockholders following the date hereof at which directors are elected. The initial term of
the class III directors shall expire at the third annual meeting of the stockholders following the date hereof at which directors are elected. Following the expiration of the initial term of any class of directors, all subsequent terms of such class
shall be for a period of three (3) years. 
 (c)    WP and GTCR Designees. 

(i)    For so long as the WP Stockholders collectively own a number of Company Shares representing at least
the percentage shown below of the number of Company Shares collectively owned by the WP Stockholders as of immediately following the Closing, there shall be included in the slate of nominees recommended by the Board for election as directors at each
applicable annual or special meeting of stockholders at which directors are to be elected that number of individuals designated by the WP Designated Sponsor Fund that, if elected, will result in the WP Stockholders having the number of directors
serving on the Board that is shown below (each such director, a “WP Director”). The WP Designated Sponsor Fund hereby designates three (3) of its five (5) WP Directors as James C. Neary, Stephanie Geveda and Ruoxi Chen.

  

					
	 Percent
	  	Number of
Directors	 
		
	 80% or greater
	  	 	5	 
		
	 60% or greater
	  	 	4	 
		
	 Less than 60% but greater than or equal to 40%
	  	 	3	 
		
	 Less than 40% but greater than or equal to 20%
	  	 	2	 
		
	 Less than 20% but greater than or equal to 6 2⁄3%
	  	 	1	 
		
	 Less than 6
2⁄3%
	  	 	0	 

 (ii)    For so long as the GTCR Stockholders collectively own a number of
Company Shares representing the percentage shown below of the number of Company Shares collectively owned by the GTCR Stockholders as of immediately following the Closing, there shall be included in the slate of nominees recommended by the Board for
election as directors at each applicable annual or special meeting of stockholders at which directors are to be elected that number of individuals designated by the GTCR Designated Sponsor Fund that, if elected, will result in the GTCR Stockholders
having the number of directors serving on the Board that is shown below (each such director, a “GTCR Director”). The GTCR Designated Sponsor Fund hereby designates three (3) GTCR Directors as David A. Donnini, Constantine S. Mihas,
Sean L. Cunningham. 

  
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	 Percent
	  	Number of
Directors	 
		
	 70% or greater
	  	 	3	 
		
	 Less than 70% but greater than or equal to 40%
	  	 	2	 
		
	 10% or greater
	  	 	1	 
		
	 Less than 10%
	  	 	0	 

 (iii)    In the event that any Designated Sponsor Fund has designated
fewer than the total number of designees such Designated Sponsor Fund shall be entitled to designate pursuant to this Section 2.01, such Designated Sponsor Fund shall have the right, at any time and from time to time, to
designate such additional designees to which it is entitled pursuant to this Section 2.01, in which case each Sponsor shall take all Necessary Action (including, as requested by such Designated Sponsor Fund, by increasing
the size of the Board, electing such designees to the Board and causing the resignation of any directors other than the Designated Sponsor Directors) to enable such Designated Sponsor Fund to designate and effect the election or appointment of such
additional individual or individuals. 
 (iv)    Upon any decrease in the number of directors that a
Designated Sponsor Fund is entitled to designate for election to the Board, each WP Director or GTCR Director, as applicable, shall be permitted to complete their remaining term in office. Following any such decrease and expiration of the next
expiring term of a WP Director or GTCR Director, as applicable, the Parties shall take all Necessary Action to cause the authorized size of the Board to be reduced accordingly unless a majority of the remaining Designated Sponsor Directors, if any,
determine not to reduce the authorized size of the Board. 
 (d)    Reserved. 

(e)    Removal; Vacancies. Upon request by any Designated Sponsor Fund to (i) cause the removal of any of its
respective designees to the Board, each Sponsor shall take all Necessary Action to cause the removal of any such designee at the request of the applicable Designated Sponsor Fund or (ii) designate for election to the Board a director to fill
any vacancy created by reason of death, removal or resignation of any of its designees to the Board, and each Sponsor shall take all Necessary Action to cause any such vacancy to be filled by a replacement director designated by such Designated
Sponsor Fund as promptly as reasonably practicable; provided, that, for the avoidance of doubt and notwithstanding anything to the contrary in this Section 2.01(e), no Designated Sponsor Fund shall have the right to
designate a replacement director, and the Sponsors shall not be required to take any action to cause any vacancy to be 

  
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filled by any such designee, to the extent that election or appointment of such designee to the Board would result in the Board having as members, at any time, a number of directors designated by
such Designated Sponsor Fund in excess of the number of directors that such Designated Sponsor Fund is then entitled to designate for membership on the Board pursuant to Section 2.01(c). 

(f)    Additional Directors. Subject to the rights of holders of any series of Preferred Stock, for so long as any
Designated Sponsor Fund has the right to designate at least one (1) director under this Agreement, without the consent of each Designated Sponsor Fund, the Company will take all Necessary Action to ensure that the number of directors serving on
the Board shall not exceed eleven (11); provided, that the number of directors may be increased if necessary to satisfy the requirements of applicable laws and stock exchange regulations. 

(g)    Quorum. The quorum for a meeting of the Board shall require: 

(i)    the presence of a majority of the directors then in office; 

(ii)    for so long as the WP Designated Sponsor Fund shall be entitled to designate any director pursuant
to Section 2.01, at least one (1) WP Director; provided, however, that if a meeting of the Board called in accordance with the Company’s certificate of incorporation and by-laws fails to achieve a quorum due to the absence of a WP Director, then any director or officer of the Company may send a new notice of meeting of the Board in accordance with the Company’s certificate of
incorporation and by-laws and a quorum at such meeting shall require only the presence of a majority of votes of all the directors then in office and, subject to the proviso to
Section 2.01(g)(iii), for so long as the GTCR Designated Sponsor Fund shall be entitled to designate any director pursuant to Section 2.01, at least one (1) GTCR Director; and 

(iii)    for so long as the GTCR Designated Sponsor Fund shall be entitled to designate any director
pursuant to Section 2.01, at least (1) GTCR Director; provided, however, that if a meeting of the Board called in accordance with the Company’s certificate of incorporation and by-laws fails to achieve a quorum due to the absence of a GTCR Director, then any director or officer of the Company may send a new notice of meeting of the Board in accordance with the Company’s certificate of
incorporation and by-laws and a quorum at such meeting shall require only the presence of a majority of votes of all the directors then in office and, subject to the proviso to
Section 2.01(g)(ii), for so long as the WP Designated Sponsor Fund shall be entitled to designate any director pursuant to Section 2.01, at least one (1) WP Director. 

Section 2.02.    Indemnification. 

(a)    Each Sponsor and their respective Affiliates (provided, for the avoidance of doubt, that Subsidiaries of the Company
shall not be considered Affiliates for this purpose), or any current, former, direct or indirect partner, manager, member, shareholder, employee, director, officer, management company, incorporator, successor or agent of such Person (collectively,
the “Indemnified Persons”) who was or is made a party or is threatened to be made 

  
 10 

 
a party to or is involved in any threatened, pending or completed action, suit or proceeding, whether civil, criminal, administrative, arbitrative (hereinafter a “Proceeding”), or any
appeal in such a Proceeding or any inquiry or investigation that could lead to such a Proceeding, by reason of the fact that he or she, or a Person of whom he or she is the legal representative, is or was a holder of equity securities of Topco
Parent or the Company, shall be indemnified by the Company to the fullest extent permitted by applicable Law, as the same exists or may hereafter be amended (but, in the case of any such amendment, only to the extent that such amendment permits the
Company to provide broader indemnification rights than said law permitted the Company to provide prior to such amendment) against judgments, penalties (including excise and similar taxes and punitive damages), fines, settlements and reasonable
expenses (including attorneys’ fees) actually incurred by such Person in connection with such Proceeding; provided, that such Person had no reasonable cause to believe that such Person’s conduct was unlawful; provided further, that, such
actions or omissions on which such proceeding or threatened proceeding are based were not found by a court of competent jurisdiction, upon entry of a final and non-appealable judgment to constitute fraud,
gross negligence or willful misconduct. No amendment, modification or repeal of this Section 2.02(a) shall have the effect of limiting or denying any such rights with respect to actions taken or Proceedings arising prior to
any amendment, modification or repeal. It is expressly acknowledged that the indemnification provided in this Section 2.02(a) could involve indemnification for negligence (other than gross negligence) or under theories of
strict liability. Reasonable expenses incurred by an Indemnified Person who was, is or is threatened to be made a named defendant or respondent in a Proceeding shall be paid by the Company in advance of the final disposition of the Proceeding upon
receipt of an undertaking by or on behalf of such Person to repay such amount if it shall ultimately be determined that he or she is not entitled to be indemnified by the Company. 

(b)    Fees, Expenses, Indemnification and Insurance. 

(i)    The Company shall (A) pay to each Designated Sponsor Director such fees or equity consideration
as may be determined by the Board, (B) reimburse each Designated Sponsor Director for all reasonable out-of-pocket expenses incurred in connection with such
director’s attendance at meetings of the Board and any committee thereof, including reasonable travel, lodging and meal expenses, (C) enter into indemnification agreements with each Designated Sponsor Director agreeing to indemnify and
advance expenses to such Designated Sponsor Director, in each case, to the maximum extent permitted by applicable law, (D) include in its certificate of incorporation or by-laws provisions for exculpation
and indemnification of, and advancement of expenses to, the Designated Sponsor Directors, in each case to the maximum extent permitted by applicable law, and (E) obtain customary director and officer indemnity insurance, which insurance shall
name as insured each Designated Sponsor Director. 
 (ii)    The Company hereby acknowledges that, in
addition to the rights provided to each Indemnified Person, each WP Director and each GTCR Director (each, a “Director Indemnitee”) pursuant to this Agreement, the Company’s certificate of incorporation, by-laws or any indemnification agreements that such directors may enter into with the Company from time to time to (the “Indemnification Agreements”), such Persons may have certain rights to

  
 11 

 
indemnification and/or advancement of expenses provided by, and/or insurance obtained by, the Sponsors and/or certain of their Affiliates (excluding the Company and its Subsidiaries), whether now
or in the future (collectively, the “Fund Indemnitors”). Notwithstanding anything to the contrary in any of the Indemnification Agreements or this Agreement, the Company hereby agrees that, with respect to its indemnification and
advancement obligations to the Indemnified Persons, each WP Director and each GTCR Director under the Indemnification Agreements, this Agreement or otherwise, the Company (A) is the indemnitor of first resort (i.e., its obligations to indemnify
the Indemnified Persons, each WP Director and each GTCR Director are primary and any obligation of the Fund Indemnitors or their insurers to advance expenses or to provide indemnification for the same expenses or liabilities incurred by the
Indemnified Persons, each WP Director and each GTCR Director is secondary and excess), (B) shall be required to advance the full amount of expenses incurred by each Indemnified Persons, each WP Director and each GTCR Director and shall be liable for
the full amount of all expenses, judgments, penalties, fines and amounts paid in settlement by each Indemnified Persons, each WP Director and each GTCR Director or on his or her behalf to the extent legally permitted and as required by this
Agreement, the Company’s certificate of incorporation, bylaws or any the Indemnification Agreements, without regard to any rights such Director Indemnitees may have against the Fund Indemnitors or their insurers, and (C) irrevocably
waives, relinquishes and releases the Fund Indemnitors and such insurers from any and all claims against the Fund Indemnitors or such insurers for contribution, by way of subrogation or any other recovery of any kind in respect thereof. In
furtherance and not in limitation of the foregoing, the Company agrees that in the event that any Fund Indemnitor or its insurer should advance any expenses or make any payment to an Indemnified Person, a WP Director or a GTCR Director for matters
subject to advancement or indemnification by the Company pursuant to the Company’s certificate of incorporation or bylaws, an Indemnification Agreement, this Agreement or otherwise, the Company shall promptly reimburse such Fund Indemnitor or
insurer and that such Fund Indemnitor or insurer shall be subrogated to all of the claims or rights of such Indemnified Person, WP Director or GTCR Director under the Company’s certificate of incorporation or bylaws, the Indemnification
Agreements, this Agreement or otherwise, including to the payment of expenses in an action to collect. The Company agrees that any Fund Indemnitor or its insurer not a party hereto shall be an express third party beneficiary of this
Section 2.02(b)(ii), able to enforce such clause according to its terms as if it were a party hereto. Nothing contained in the Indemnification Agreements is intended to limit the scope of this
Section 2.02(b)(ii) or the other terms set forth in this Agreement or the rights of the Fund Indemnitors or their insurers hereunder. 

Section 2.03.    Financial Statements and Reports.  

(a)    The Company shall provide to each Sponsor, so long as such Sponsor’s Designated Sponsor Fund shall be entitled
to designate at least one (1) director pursuant to Section 2.01: 

  
 12 

 (i)    monthly operating reports as soon as available
and not later than thirty (30) days following the applicable month end; 
 (ii)    budgets as and
when prepared; 
 (iii)    notice of events that, in the Board’s determination, would reasonably be
expected to have a material impact on the business operations of the Company and its Subsidiaries taken as a whole, including the commencement of criminal or material civil actions; 

(iv)    such other information as may reasonably be requested by a Sponsor or as is otherwise required by
applicable law; and 
 (v)    all information provided to all directors of the Company, in their capacity
as such, including all meeting “pre-read” materials, proposed resolutions and minutes of meetings, except if doing so would, in the opinion of counsel to the Company, jeopardize the attorney-client
privilege for attorney-client privileged communications . 
 (b)    Without limiting the generality of
Section 6.05, the Company acknowledges and agrees that the WP Stockholders may disclose to the Co-Investor and the Co-Invest Limited Partners
the information required to be disclosed pursuant to Section 7.04 of the Co-Invest LPA or any other agreement between the Co-Investor and a Co-Invest Limited Partner for so long as the Co-Investor and the Co-Invest Limited Partners are subject to a duty of confidentiality
with respect to such information. 
 Section 2.04.    Certain Acknowledgments. 

(a)    Each Party acknowledges and agrees that Topco Parent has fully satisfied its obligations under Section 9.02 of
the LPA and does hereby forever waive, release and discharge Topco Parent to the fullest extent permitted by law from any and all actions, causes of action, claims, demands, demands for indemnification, damages, losses, liabilities, awards,
judgments, costs, expenses, debts, dues and suits of every kind, nature and description whatsoever now existing or hereafter arising under Section 9.02 of the LPA. 

(b)    Each Party acknowledges and agrees that in connection with the distribution of Company Shares by Topco Parent to
its limited partners in accordance with the LPA, fractional Company Shares that would otherwise have been distributable to Stockholders in accordance with Section 4.01 of the LPA have been rounded up or rounded down in the discretion of the
board of managers of Topco Parent to ensure that the number of issued and outstanding Company Shares will be the same as the number disclosed in connection with the IPO. Notwithstanding such rounding, the Stockholders acknowledge and agree that such
rounding is permitted under Section 4.01 and Article XIII of the LPA and Topco Parent shall have no liability for such rounding. 

(c)    Each Stockholder acknowledges and agrees that on or prior to the date hereof, such Stockholder has received a
distribution of Company Shares and/or cash from Topco Parent in accordance with Section 4.01 of the LPA and that the Company Shares and cash distributed to the limited partners of Topco Parent in such distribution constitute substantially all of the
assets of Topco Parent. Accordingly, Topco Parent has or will enter into dissolution following such distribution pursuant to Section 10.01 of the LPA. Each Stockholder further acknowledges and agrees that following the dissolution and completion of
the winding up of Topco Parent, the certificate of limited partnership of Topco Parent will be canceled by a filing with the Secretary of State of the State of Delaware and all equity interests in Topco Parent will be canceled for no consideration
and Topco Parent shall cease to exist. 
 Section 2.05.    Voting Agreement; Certain Actions. 

(a)    Each Sponsor agrees to take all Necessary Action, including by casting all votes to which such Stockholder is
entitled in respect of its Company Shares, whether at any annual or special meeting, by written consent or otherwise, so as to cause the election, removal and replacement of directors in the manner contemplated in
Section 2.01 and to otherwise give the fullest effect possible to the provisions of this Article II. 

  
 13 

 (b)    The Company agrees, to the extent permitted by applicable laws
and stock exchange regulations, to include in the slate of nominees recommended by the Board for election at any meeting of stockholders called for the purpose of electing directors the individuals designated pursuant to
Section 2.01 and to nominate and recommend each such individual to be elected as a director as provided herein, and to solicit proxies or consents in favor thereof, and take all Necessary Action to otherwise give the
fullest effect possible to the provisions of this Article II. 
 Section 2.06.    Committees. 

(a)    The Board may designate one or more committees of the Board, each committee to consist of one or more directors. To
the extent permitted by applicable laws and stock exchange regulations, the Sponsors shall be represented on each committee of the Board in proportion to the number of directors each Sponsor’s Designated Sponsor Fund is permitted to appoint
pursuant to Section 2.01(c); provided that each Sponsor shall, to the extent permitted by applicable laws and stock exchange regulations, be entitled to at least one (1) director on each committee; provided
further, that each Designated Sponsor Fund may, within its sole discretion, decide not to designate any of its Designated Sponsor Directors to serve on one or more committees of the Board. As used in this Agreement, the term
“committee” shall refer to any committee of the Board and any subcommittee of any such committee. 

(b)    Without limiting the generality of the foregoing Section 2.06(a), for so long as the WP Designated Sponsor
Fund shall be entitled to designate at least one (1) director pursuant to Section 2.01, the Chairman of the Compensation Committee shall be a member of the Board selected by the WP Directors. 

(c)    The quorum for a meeting of any committee of the Board shall require: 

(i)    for so long as at least one (1) WP Director serves on such committee, at least one (1) WP
Director that serves on such committee; provided, however, that if a meeting of such committee called in accordance with the Company’s certificate of incorporation and bylaws and the charter or resolutions of the Board
constituting such committee fails to achieve a quorum due to the absence of the WP Director(s), then any director or officer of the Company may send a new notice of meeting of such committee in accordance with the Company’s certificate of
incorporation and bylaws or the charter or resolutions of the Board constituting such committee and a quorum at such meeting shall require only the presence of a majority of votes of all the directors that serve on such committee and, subject to the
proviso to Section 2.06(c)(ii), for so long as at least one (1) GTCR Director serves on such committee, at least one (1) GTCR Director; and 

(ii)    for so long as at least one (1) GTCR Director serves on such committee, at least one
(1) GTCR Director that serves on such committee; provided, however, that if a meeting of such committee called in accordance with 

  
 14 

 
the Company’s certificate of incorporation and by-laws and the charter or resolutions of the Board constituting such committee fails to achieve a
quorum due to the absence of the GTCR Director(s), then any director or officer of the Company may send a new notice of meeting of such committee in accordance with the Company’s certificate of incorporation and
by-laws or the charter or resolutions of the Board constituting such committee and a quorum at such meeting shall require only the presence of a majority of votes of all the directors that serve on such
committee and, subject to the proviso to Section 2.06(c)(i), for so long as at least one (1) WP Director serves on such committee, at least one (1) WP Director. 

ARTICLE III 
 APPROVAL RIGHTS

 Section 3.01.     Required Approvals. Subject to
Section 3.02, the Company shall not take or commit to take, and (to the extent applicable) shall not cause or permit any of its Subsidiaries to take or commit to take, directly or indirectly, whether by amendment, merger,
consolidation, reorganization or otherwise, any of the following actions without the approval of 75% of the total number of directors then in office. 

(a)    consummation of any acquisition of the stock (including a minority interest) or assets of any other entity (other
than a Subsidiary of the Company), in a single transaction or a series of related transactions (whether by purchase, tender offer, exchange offer, merger, other business combination transaction or otherwise), with a value in excess of
$300 million in the aggregate; 
 (b)    a consolidation, merger or other business combination of the Company with
or into any other entity, or transfer (by lease, assignment, sale or otherwise) of all or substantially all of the Company’s and its Subsidiaries’ assets, taken as a whole, to another entity, or a “Change in Control” (or any
similar term) as defined in the Company’s or its Subsidiaries’ indebtedness documents, other than any such consolidation, merger or other business combination solely between the Company and its Subsidiaries or between Subsidiaries of the
Company; 
 (c)    a disposition, in a single transaction or a series of related transactions, of any assets of the
Company or any of its Subsidiaries with a value in excess of $300 million in the aggregate or for consideration in excess of $300 million, other than the sale of inventory or products in the ordinary course of business, other than a
transaction solely between the Company and its Subsidiaries or between Subsidiaries of the Company; 
 (d)    any change
in the size of the Board, other than in accordance with Article II; 
 (e)    any amendment, modification or
repeal of any provision of the Company’s certificate of incorporation or by-laws; 

  
 15 

 (f)    a termination of the Chief Executive Officer or designation of a
new Chief Executive Officer; 
 (g)    any change in the composition of any committee of the Board; 

(h)    except for compensation arrangements approved by the Compensation Committee of the Board in the ordinary course and
in accordance with the charter of the Compensation Committee of the Board, entry into, or expansion of existing, compensation arrangements with (i) any executive officer of the Company or (ii) Affiliates of (A) the Company (other than
any Subsidiary of the Company) or (B) any executive officer of the Company; 
 (i)    the issuance of additional
shares of any class or series of capital stock or equity interests of the Company or any of its Subsidiaries, other than, (A) in the case of the Company, any award under any stockholder approved equity compensation plan, (B) in the case of
a Subsidiary of the Company, to the Company or another direct or indirect Subsidiary of the Company and (C) as required by the organizational documents of a Subsidiary of the Company or a contract to which a Subsidiary of the Company is party,
in each case, that is in effect on the date hereof; or 
 (j)    the incurrence of additional indebtedness, in a single
transaction or a series of related transactions, by the Company or any of its Subsidiaries in an amount in excess of $300 million outstanding at any one time, other than (i) intercompany debt among Subsidiaries of the Company or the
Company and any Subsidiary and (ii) incurrence of additional indebtedness under the Credit Agreement or Indenture. 

Section 3.02.    Termination of Required Approvals. The approval rights set forth in
Section 3.01 shall terminate at such time as neither the WP Designated Sponsor Fund nor the GTCR Designated Fund has the right individually to designate at least three (3) directors pursuant to Section 2.01. 

ARTICLE IV 
 TRANSFERS.

 Section 4.01.    Limitations on Transfer. 

(a)    Until the sixth (6th) anniversary of the date hereof, no Management Stockholder may Transfer any of its Company
Shares held on the date hereof (excluding, for the avoidance of doubt, any Company Shares acquired pursuant to equity awards issued under the Company’s 2020 Omnibus Incentive Plan) (“Existing Shares”) or securities of the
Company or its Subsidiaries issued in respect of such Existing Shares, or in substitution for Existing Shares, in connection with any stock split, stock dividend or combination, or any reclassification, recapitalization, merger, consolidation, share
exchange or other similar reorganization; provided, that such prohibition shall not apply to Transfers (i) to a Permitted Transferee that is being effected for bona fide estate planning or similar purposes, (ii) made pursuant to
applicable laws of descent or distribution or to such Management Stockholder’s legal guardian in the case of mental incapacity, (iii) with the prior written consent of a majority of the members of the Compensation Committee of the Board,
(iv) in connection with a merger of the Company or 

  
 16 

 
solely to tender into a tender or exchange offer commenced by a third party or by the Company; provided, that with respect to an unsolicited tender or exchange offer commenced by a third party,
such Transfer shall be permitted only if the Board is affirmatively publicly recommending to the Company’s shareholders that such shareholders tender into such offer, (v) of vested Company Shares in a Public Sale (A) at such time as
the Sponsors sell Company Shares in a Public Sale; provided however, that the Management Stockholder may only Transfer a number of vested Company Shares up to the number of Public Sale Eligible Shares, or (B) pursuant to the penultimate
sentence of this Section 4.01(a), (vi) of vested Company Shares in a Public Sale or Private Sale following a Private Sale by the Sponsors up to the number of Private Sale Eligible Shares and (vii) to a bona fide
charity or donor-advised fund organized under Section 501(c)(3) of the Internal Revenue Code of 1986, as amended; provided that no Management Stockholder may make Transfers pursuant to this clause (vii) in a single calendar year in
excess of the lesser of (A) $3,000,000 worth of Company Shares determined based on the VWAP at the time of such Transfer and (B) ten percent (10%) of the Company Shares subject to the restrictions on Transfer set forth in this
Section 3.01 held by such Management Stockholder at the beginning of the calendar year in which such Transfer takes place. If at the time of a Public Sale by the Sponsors, the Management Stockholder is not permitted to, or
chooses not to Transfer all such Public Sale Eligible Shares and Private Sale Eligible Shares, the Management Stockholder shall retain the right to Transfer at a future date in a Public Sale, a number of vested Company Shares equal to the lesser of
(x) the number of vested Company Shares then owned by the Management Stockholder as of such future date and (y) that portion of such Public Sale Eligible Shares and Private Sale Eligible Shares which the Management Stockholder was not
permitted to Transfer, or chose not to Transfer in a prior Public Sale. For the avoidance of doubt, the number of Public Sale Eligible Shares and Private Sale Eligible Shares shall be cumulative and increase with each Public Sale or Private Sale by
the Sponsors, but be reduced for the number of vested Company Shares Transferred by a Management Stockholder pursuant to Section 4.01(a)(iv) or Section 4.01(a)(v). 

(b)    The limitations on Transfers of Company Shares set forth in this Article IV are in addition to any
restrictions set forth in the Registration Rights Agreement, any “lock up” restrictions imposed by the underwriters in connection with any Public Offering, any other plan, program, contract, agreement or policy pursuant to which the
Company Shares may be subject, and any restrictions imposed by applicable law. 
 (c)    Any purported Transfer of
Company Shares other than in accordance with this Agreement shall be null and void, and the Company shall refuse to recognize any such Transfer for any purpose and shall not, and shall cause any transfer agent not to, reflect in its records any
change in record ownership of Company Shares pursuant to any such Transfer. 
 (d)    Except as provided in the
Registration Rights Agreement, any Stockholder that proposes to Transfer Company Shares in accordance with the terms and conditions hereof shall be responsible for any expenses incurred by the Company in connection with such Transfer. 

Section 4.02.    Rights and Obligations of Transferees. Any Transferee of Company Shares that is an Affiliate
or Permitted Transferee of any Stockholder shall be required, at the time of and as a condition to such Transfer, to become a party to this Agreement by executing and delivering a Joinder Agreement in the form of Exhibit A hereto (and thereby
making the representations and warranties set forth in Article V hereof) and such other 

  
 17 

 
documents as may be necessary, in the reasonable opinion of the Sponsors (or, if either Sponsor’s Designated Sponsor Fund shall have ceased to have the right to designate any directors
pursuant to Section 2.01, the reasonable opinion of the Sponsor whose Designated Sponsor Fund continues to have the right to designate at least one (1) director pursuant to Section 2.01), to
make such Person a party hereto, whereupon such Transferee will be treated as a Stockholder for all purposes of this Agreement; provided, that no Transferee of Company Shares shall be required to become a party to this Agreement if such
Transferee acquired such Company Shares (a) after the sixth (6th) anniversary of the date hereof (or the foregoing transfer restrictions otherwise have expired) or (b) in a sale to the public in a Public Sale or in a permissible Private
Sale. 
 Section 4.03.    Legends. 

(a)    Each certificate representing Company Shares, if any, issued to a Stockholder shall bear a legend on the reverse
side thereof substantially in the following form in addition to any other legend determined by the Company or as required by applicable law or by agreement with the Company (and, in the case of uncertificated Company Shares, notice of such legend
shall be given in accordance with applicable law): 
 THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED
(THE “SECURITIES ACT”), AND MAY NOT BE OFFERED OR SOLD, UNLESS IT HAS BEEN REGISTERED UNDER THE SECURITIES ACT OR UNLESS AN EXEMPTION FROM REGISTRATION IS AVAILABLE (AND, IN SUCH CASE, AN OPINION OF COUNSEL REASONABLY SATISFACTORY
TO THE COMPANY MAY BE REQUESTED BY THE COMPANY TO THE EFFECT THAT SUCH OFFER OR SALE IS NOT REQUIRED TO BE REGISTERED UNDER THE SECURITIES ACT). 

THIS SECURITY MAY BE SUBJECT TO CERTAIN RESTRICTIONS ON TRANSFER AND OTHER TERMS AND CONDITIONS SET FORTH IN A STOCKHOLDERS AGREEMENT, DATED
AS OF [•], 2020 (AS MAY BE AMENDED OR RESTATED FROM TIME TO TIME), A COPY OF WHICH MAY BE OBTAINED FROM THE COMPANY AT ITS PRINCIPAL EXECUTIVE OFFICES FREE OF CHARGE. 

(b)    Upon the permitted sale of any Company Shares (i) in a Public Offering, (ii) in compliance with Rule 144
under the Securities Act, or (iii) pursuant to another exemption from registration under the Securities Act, or upon the termination of this Agreement in accordance with its terms, upon the written request of the holder of such Company Shares,
any certificates representing such Company Shares shall be replaced, at the expense of the Company, with certificates or instruments not bearing the legends required by Section 4.03(a); provided, that the Company may
condition any replacement of certificates pursuant to clause (iii) of this Section 4.03(b) on the receipt of an opinion of legal counsel reasonably satisfactory to the Company stating that such Company Shares are
freely transferable under the Securities Act. 
 (c)    If any Company Shares cease to be subject to any and all
restrictions on Transfer and all other obligations set forth in this Agreement, upon the written request of the 

  
 18 

 
holder of such Company Shares, any certificates representing such Company Shares shall be replaced, at the expense of the Company, with certificates or instruments not bearing the second
paragraph of the legends required by Section 4.03(a). 
 Section 4.04.    Notice.
Each Sponsor shall provide the Company with notice of a Transfer to a third party of Company Shares held by such Sponsor (excluding Transfers to Affiliates) reasonably promptly after such Transfer and in any event within ten (10) Trading Days
following such Transfer. 
 ARTICLE V 

REPRESENTATIONS AND WARRANTIES 

Section 5.01.    Representations and Warranties of the Parties. Each of the Parties hereby represents and
warrants to each other Party that on the date hereof: 
 (a)    Such Party has the necessary legal capacity or power and
authority to enter into this Agreement and to carry out its obligations hereunder. To the extent applicable, such Party is duly organized and validly existing under the laws of its jurisdiction of organization, and the execution of this Agreement,
and the consummation of the transactions contemplated herein, have been authorized by all necessary corporate or other action, and no other act or proceeding, corporate or otherwise, on its part is necessary to authorize the execution of this
Agreement or the consummation of any of the transactions contemplated hereby. This Agreement has been duly executed by such Party and constitutes its legal, valid and binding obligation, enforceable against it in accordance with its terms, subject
to the effects of bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium and other similar laws relating to or affecting creditors’ rights generally, general equitable principles (whether considered in a proceeding in equity
or at law) and any implied covenant of good faith and fair dealing. 
 (b)    The execution and delivery by such Party
of this Agreement and the performance of its obligations hereunder do not and will not (i) conflict with, or result in the breach of any provision of the constitutive documents of such Party; (ii) result in any violation, breach, conflict,
default or event of default (or an event which with notice, lapse of time, or both, would constitute a default or event of default), or give rise to any right of acceleration or termination or any additional payment obligation, under the terms of
any material contract, agreement or permit to which such Party is a party or by which such Party’s assets or operations are bound or affected; or (iii) violate, in any material respect, any law applicable to such Party, the Company or any
of its Subsidiaries. 
 (c)    Other than any consents that have already been obtained, no consent, waiver, approval,
authorization, exemption, registration, license or declaration is required to be made or obtained by such Party in connection with (i) the execution, delivery or performance of this Agreement or (ii) the consummation of any of the
transactions currently contemplated herein, excluding, for the avoidance of doubt, any transactions contemplated herein solely as a result of one or more amendments to this Agreement following the date hereof. 

(d)    If such Party is a Stockholder, such Party understands that Company Shares cannot be sold or otherwise disposed of
unless they are registered under the Securities 

  
 19 

 
Act and applicable U.S. state securities laws or unless an exemption from such registration is available, and that registration of Company Shares is subject to the terms and conditions set forth
in the Registration Rights Agreement, and that accordingly such Stockholder is able and is prepared to bear the economic risk of making an investment in the Company and to suffer a complete loss of investment. 

Section 5.02.    Entitlement of the Parties to Rely on Representations and Warranties. The representations and
warranties contained in Section 5.01 may be relied upon by the Parties in connection with the entering into of this Agreement. 

ARTICLE VI 
 MISCELLANEOUS

 Section 6.01.    Termination. This Agreement shall terminate automatically (without any action by any
Party): 
 (a)    as to each Stockholder, as of the date that such Stockholder no longer owns any Company Shares; and

 (b)    as to all the Parties, as of the date that no Designated Sponsor Fund has the right to designate any directors
pursuant to Section 2.01. 
 Section 6.02.    Certificate of Incorporation and By-Laws. The provisions of this Agreement shall be controlling as among the Parties hereto and if any such provisions or the operation thereof conflict with the provisions of the Company’s certificate of
incorporation or by-laws, and the Parties shall take all action to enforce or cause the enforcement of the terms hereof. Without limiting the foregoing, the Sponsors and the Company agree to take all Necessary
Action to amend the Company’s certificate of incorporation or by-laws so as to avoid any conflict with the provisions hereof. 

Section 6.03.    Corporate Opportunity.  

(a)    Regulation of Certain Affairs. In recognition and anticipation that (i) certain partners,
principals, directors, officers, members, managers, employees and/or other representatives of the Sponsors (each of the foregoing Persons other than the Sponsors, an “Identified Person”) may serve as directors, officers or agents of
the Company or its Subsidiaries, and (b) the Sponsors may now engage and may continue to engage in the same or similar activities (which shall include other business activities that overlap with or compete with those in which the Company or its
Subsidiaries, directly or indirectly, may engage) or related lines of business in which the Company or its Subsidiaries, directly or indirectly, may engage, and/or may have an interest in the same or similar areas of corporate opportunities as the
Company or its Subsidiaries, directly or indirectly, may have an interest, the provisions of this Section 6.03 are set forth to regulate and define the conduct of certain affairs of the Company and its Subsidiaries with
respect to certain classes or categories of business opportunities as they may involve the Sponsors and the Identified Persons, and the powers, rights, duties and liabilities of the Company and its Subsidiaries and their respective officers,
directors and stockholders in connection therewith. 

  
 20 

 (b)    Competition and Corporate Opportunities. To the fullest
extent permitted by law, (i) the Sponsors and the Identified Persons shall have the right to, and shall have no duty (contractual, fiduciary or otherwise) not to, directly or indirectly engage in the same or similar business activities or lines
of business as the Company or any of its Subsidiaries, on its own account, or in partnership with, or as an employee, officer, director or stockholder of any other person, including those lines of business deemed to be competing with the Company or
any of its Subsidiaries, (ii) none of the Company or its stockholders or any of its Subsidiaries or their stockholders or equityholders shall have any rights in and to the business ventures of any Sponsor or Identified Person or the income or
profits derived therefrom, (iii) each of the Sponsor and the Identified Persons may do business with any potential or actual customer or supplier of the Company of any of its Subsidiaries, (iv) each of the Sponsors and the Identified
Persons may employ or otherwise engage any officer of employee of the Company or any of its Subsidiaries, and (v) the Company, on behalf of itself, its Subsidiaries and its and their respective stockholders, renounces any interest or expectancy
of the Company and its Subsidiaries in, or in being offered an opportunity to participate in, any business opportunity that may from time to time be presented to any Sponsor or any Identified Person, even if the opportunity is one that the Company
or its Subsidiaries might reasonably be deemed to have pursued or had the ability or desire to pursue if granted the opportunity to do so, (vi) no Sponsor or Identified Person shall have any duty to communicate or offer such business
opportunity to the Company or any of its Subsidiaries or shall be liable to the Company or any of its Subsidiaries or any of their respective stockholders for breach of any fiduciary or other duty (contractual, fiduciary or otherwise), as a director
or officer or otherwise, by reason of the fact that such Sponsor or Identified Person pursues or acquires such business opportunity, directs such business opportunity to another person or fails to present such business opportunity, or information
regarding such business opportunity, to the Company or its Subsidiaries unless, in the case of any such person who is a director or officer of the Company, such business opportunity is expressly offered to such director or officer in writing solely
in his or her capacity as a director or officer of the Company. 
 (c)    The Sponsors and the Company shall take all
Necessary Action to cause the Company’s certificate of incorporation to include the renunciation on corporate opportunities by the Company and its Subsidiaries contemplated by Section 6.03(a) and
Section 6.03(b) hereof. The Company’s certificate of incorporation shall not be deemed to be in conflict with this Section 6.03 to the extent it provides a broader waiver or renunciation by the Company or its
Subsidiaries of corporate opportunities that may be offered to or pursued by any Sponsor or Identified Person or provides other protections or benefits to any Sponsor or Identified Person with respect thereto. The Company acknowledges and agrees
that the resolutions of the Board approving this Agreement shall constitute a resolution adopted pursuant to Section 122(17) of the DGCL adopting this Section 6.03, including the waiver and renunciation of the corporate opportunities
identified herein. 
 Section 6.04.    Publicity. The Company grants permission to the Sponsors to use the
name and logo of the Company and its Subsidiaries in marketing materials used by each such Sponsor and its respective Affiliates. The Sponsors and/or their respective Affiliates, as the case may be, shall include a trademark attribution notice
giving notice of the Company’s and/or its Subsidiaries’ ownership of their trademarks in any marketing materials in which the Company’s and/or its Subsidiaries’ name and logo appear. 

  
 21 

 Section 6.05.    Sharing of Information. Except as set forth
in this Section 6.05, the Sponsors shall maintain the confidentiality of the Company Confidential Information (as defined below) and cause the Sponsor Affiliated Persons (as defined below) and Internal Recipients (as defined below) to maintain
the confidentiality of the Company Confidential Information. Notwithstanding anything to the contrary contained in this Agreement, the Company hereby acknowledges and agrees that each of the Sponsors and its Affiliates, the Sponsor Designated
Directors, or any officer of the Company that is an Affiliate of a Sponsor (each, a “Sponsor Affiliated Person”) may, to the fullest extent permitted by applicable law, use for their own benefit and disclose to their respective
Affiliates, directors, officers, representatives, agents and employees and professional advisers (the “Internal Recipients”) and to (a) the investors, limited partners or members of the applicable Sponsor or its related
investment funds and their respective representatives (and, to the extent required for such limited partners’ or members’ internal reporting obligations, Affiliates of such limited partners or members), (b) persons who have expressed a
bona fide interest in becoming investors, limited partners or members of the applicable Sponsor or its related investment funds, (c) potential transferees of the applicable Sponsor’s equity securities in the Company, (d) potential
participants in future transactions involving the applicable Sponsor, any of its Affiliates or their related investment funds (potentially involving the Company or otherwise), and (e) such other persons as the applicable Sponsor shall deem
reasonably necessary in connection with the conduct of its investment and business activities (the “External Recipients” and together with the Internal Recipients, the “Permitted Recipients”), any and all non-public information with respect to the Company or its Affiliates or Subsidiaries (including any Person in which the Company holds, or contemplates acquiring, an investment) (“Company Confidential
Information”) that is in the possession of such Sponsor Affiliated Person on the date hereof or disclosed after the date of this Agreement to such Sponsor Affiliated Person by or on behalf of the Company or its Subsidiaries, including
pursuant to Section 2.03; provided, that the Permitted Recipients agree to keep such Company Confidential Information confidential on the same terms that the Sponsor requires with respect to its own confidential
information; and provided further that the Sponsor Affiliated Persons and the Permitted Recipients may disclose any Company Confidential Information (x) as has become generally available to the public, was or has come into the
possession of the relevant Sponsor Affiliated Person or Permitted Recipient on a non-confidential basis without a breach of any confidentiality obligations by such Person disclosing such Company Confidential
Information, or has been independently developed by the Sponsor Affiliated Person or Permitted Recipient without use of the Company Confidential Information, (y) to the extent necessary in order to comply with any law, order, regulation or
ruling applicable to the applicable Sponsor, or such Sponsor Affiliated Person or Permitted Recipient, or to a regulatory agency with applicable jurisdiction, and (z) as may be required in response to any summons or subpoena or in connection
with any litigation or arbitration; provided, in the case of clauses (y) and (z), that such Sponsor, Sponsor Affiliated Person or Permitted Recipient provides prior written notice of such required disclosure to the Company and
takes all commercially reasonable and lawful actions to avoid and/or minimize the extent of such disclosure. 

Section 6.06.    Notices. In the event a notice or other document is required to be sent hereunder to the
Company or any Stockholder, such notice or other document shall be in writing and shall be considered given and received, in all respects when personally delivered, or when sent by express or courier service or United States registered or certified
mail, return receipt requested and postage and other fees prepaid, or by electronic mail, on the day such 

  
 22 

 
notice or document is personally delivered or delivered by electronic mail or on the third Business Day following the day on which such notice or other document is delivered to any such
commercial delivery service as aforesaid. Any notice and document shall be addressed to the party entitled to receive such notice or other document (a) in the case of the Company, at: 

9100 South Hills Boulevard, Suite 300 

Broadview Heights, OH 44147 

Attention: General Counsel 

Email: MKlaben@soterahealth.com 

with a copy (which shall not constitute notice) to: 

Cleary Gottlieb Steen & Hamilton LLP 

One Liberty Plaza 
 New York, NY
10006 
 Attention: David Lopez 

Attention: Matthew P. Salerno 

Email: dlopez@cgsh.com 
 Email:
msalerno@cgsh.com 
 and (b) in the case of any Stockholder, at such Stockholder’s address shown on Exhibit B hereto, or at such other
address as any such party shall request in a written notice sent to the Company. Any party hereto or its legal representatives may effect a change of address for purposes of this Agreement by giving written notice of such change to the Company, and
the Company shall, upon the request of any party hereto, notify such party of such change in the manner provided herein. Until such notice of change of address is properly given, the addresses set forth herein shall be effective for all purposes.

 Section 6.07.    Amendments. The terms and provisions of this Agreement may be modified or amended at any
time and from time to time only by approval of Stockholders that collectively own a majority of the Company Shares then owned by all Stockholders; provided, that any amendment (other than amendments made to Exhibit B hereto in
accordance with the terms of this Agreement) that would have a disproportionate material adverse effect on any Stockholder relative to another Stockholder (other than as a result of such Stockholder electing not to exercise any rights granted to
such Stockholder pursuant to the terms of this Agreement) shall require the written consent of that Stockholder. All Stockholders shall receive notice of any amendment to this Agreement. 

Section 6.08.    Governing Law; Jurisdiction. This Agreement and any dispute arising out of, relating to or in
connection with this Agreement, shall be construed (both as to validity and performance), interpreted and enforced in accordance with the laws of the State of Delaware, without regard to any conflicts of law provisions thereof that would result in
the application of the laws of any other jurisdiction. Any action against any party relating to the foregoing shall be brought exclusively in the Court of Chancery of the State of Delaware (or, if the Court of Chancery of the State of Delaware lacks
jurisdiction, the state or federal courts in the State of Delaware) and appellate courts thereof. The parties hereby irrevocably waive, to the fullest extent permitted by applicable law, any objection that they may now or hereafter have to the
laying of venue of any such action brought in such court or any defense of inconvenient 

  
 23 

 
forum for the maintenance of such action. Each party agrees that service of summons and complaint or any other process that might be served in any action may be made on such party by sending or
delivering a copy of the process to the party to be served by registered mail, return receipt requested, at the address of the party provided for the giving of notices in Section 6.06. Nothing in this
Section 6.08, however, shall affect the right of any party to serve legal process in any other manner permitted by law. 

Section 6.09.    Waiver of Jury Trial. THE PARTIES ACKNOWLEDGE AND AGREE THAT ANY CONTROVERSY WHICH MAY ARISE
UNDER THIS AGREEMENT IS LIKELY TO INVOLVE COMPLICATED AND DIFFICULT ISSUES, AND THEREFORE THE PARTIES HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVE ANY RIGHT SUCH PARTY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY LITIGATION DIRECTLY OR INDIRECTLY
ARISING OUT OF OR RELATING TO THIS AGREEMENT. EACH PARTY CERTIFIES AND ACKNOWLEDGES THAT (I) NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY HERETO HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT
OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER, (II) EACH SUCH PARTY UNDERSTANDS AND HAS CONSIDERED THE IMPLICATIONS OF THIS WAIVER, (III) EACH SUCH PARTY MAKES THIS WAIVER VOLUNTARILY, AND (IV) EACH SUCH PARTY HAS BEEN INDUCED
TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION 6.09. 

Section 6.10.    Entire Agreement. This Agreement, together with the Registration Rights Agreement, embodies
the entire agreement and understanding of the Parties and supersedes all prior agreements and understandings between the Parties with respect to the subject matter hereof and thereof. 

Section 6.11.    Waivers. No waiver of any breach of any of the terms of this Agreement shall be effective
unless such waiver is made expressly in writing and executed and delivered by the party against whom such waiver is claimed. No waiver of any breach shall be deemed to be a further or continuing waiver of such breach or a waiver of any other or
subsequent breach. Except as otherwise expressly provided herein, no failure on the part of any party to exercise, and no delay in exercising, any right, power or remedy hereunder, or otherwise available in respect hereof at law or in equity, shall
operate as a waiver thereof, nor shall any single or partial exercise of such right, power or remedy by such party preclude any other or further exercise thereof, or the exercise of any other right, power or remedy. 

Section 6.12.    Successors and Assigns. All covenants and agreements contained in this Agreement shall bind
and inure to the benefit of the parties hereto and their respective heirs, executors, administrators, successors, legal representatives, and permitted assigns, whether so expressed or not. 

Section 6.13.    Severability. Whenever possible, each provision of this Agreement will 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 invalid, illegal, or unenforceable such provision shall be ineffective only to the extent of such invalidity, illegality or
unenforceability, without invalidating the remainder of such provision or the remaining provisions of this 

  
 24 

 
Agreement, unless the severance of such provision could be in opposition to the parties’ intent with respect to such provision or the economic or legal substance of the transactions
contemplated hereby would be affected in any manner materially adverse to any party hereto, in which case the parties will negotiate revisions to this Agreement to preserve as nearly as possible or nearly as practicable the economic or legal
substance of such invalid, illegal or unenforceable provision. 
 Section 6.14.    Further Assurances. In
connection with this Agreement and the transactions contemplated hereby, the Company and each Stockholder shall execute and deliver any additional documents and instruments and perform any additional acts that the Sponsors jointly, and reasonably,
determine (or, if either Sponsor’s Designated Sponsor Fund shall have ceased to have the right to designate any directors pursuant to Section 2.01, that the Sponsor whose Designated Sponsor Fund continues to have the
right to designate at least one (1) director pursuant to Section 2.01 determines) to be necessary or appropriate to effectuate and perform the provisions of this Agreement and those transactions. 

Section 6.15.    Counterparts; Electronic Signatures. This Agreement may be executed in any number of
counterparts, each of which shall be deemed an original, but all of which shall constitute one and the same instrument. Facsimile, .pdf and other electronic signatures to this Agreement shall have the same effect as original signatures. 

Section 6.16.    Third Party Beneficiaries. Except as provided in Section 2.02,
Section 2.03, Section 2.04, ,Section 6.03, Section 6.05, Section 6.17 and Section 6.22, this
Agreement does not create any rights, claims or benefits inuring to any Person that is not a party hereto, and it does not create or establish any third party beneficiary hereto. 

Section 6.17.    No Third Party Liability. This Agreement may only be enforced against the named parties
hereto. All claims or causes of action (whether in contract or tort) that may be based upon, arise out of or relate to this Agreement, or the negotiation, execution or performance of this Agreement (including any representation or warranty made in
or in connection with this Agreement or as an inducement to enter into this Agreement), may be made only against the entities that are expressly identified as parties hereto; and no past, present or future controlling person, management company,
portfolio company, director, manager, officer, employee, incorporator, member, partner, stockholder, Affiliate, agent, attorney or representative of any party hereto (including any Person negotiating or executing this Agreement on behalf of a party
hereto), unless party to this Agreement, shall have any liability or obligation with respect to this Agreement or with respect any claim or cause of action (whether in contract or in tort, at law or in equity, or otherwise) that may arise out of or
relate to this Agreement, or the negotiation, execution or performance of this Agreement (including a representation or warranty made in or in connection with this Agreement or as an inducement to enter into this Agreement). 

Section 6.18.    Binding Effect; Assignment. Except as otherwise provided in this Agreement to the contrary,
this Agreement shall be binding upon and inure to the benefit of the Company, the Stockholders and their respective heirs, legal representatives, executors, administrators, successors and permitted assigns. The rights and obligations under this
Agreement shall not be assignable without the prior written consent of the Sponsors (or, if either Sponsor’s Designated Sponsor Fund shall have ceased to have the right to designate any directors pursuant to
Section 2.01, the prior written consent of the Sponsor whose Designated 

  
 25 

 
Sponsor Fund continues to have the right to designate at least one (1) director pursuant to Section 2.01), and any attempted assignment of rights or obligations in
violation of this Section 6.18 shall be null and void. 
 Section 6.19.    Specific
Performance. It is hereby agreed and acknowledged that it will be impossible to measure in money the damages that would be suffered if the parties fail to comply with any of the obligations herein imposed on them and that, in the event of any
such failure, an aggrieved Person will be irreparably damaged and will not have an adequate remedy at law. Any such party shall, therefore, be entitled (in addition to any other remedy to which such party may be entitled at law or in equity) to
injunctive relief, including specific performance, to enforce such obligations, without the posting of any bond and if any action should be brought in equity to enforce any of the provisions of this Agreement, none of the parties hereto shall raise
the defense that there is an adequate remedy at law. 
 Section 6.20.    Time of the Essence. The parties
agree that time shall be of the essence in the performance of this Agreement. 
 Section 6.21.    No
Promotion. The Company and each Stockholder agrees that it will not, without the prior written consent of the applicable Sponsor, in each instance, (a) use in advertising, publicity, or otherwise the name of Warburg Pincus LLC, GTCR LLC,
any Sponsor or any of their respective Affiliates, or any partner or employee of a Sponsor, nor any trade name, trademark, trade device, service mark, symbol or any abbreviation, contraction or simulation thereof owned by Warburg Pincus LLC, GTCR
LLC, any Sponsor, or their respective Affiliates, or (b) represent, directly or indirectly, that any product or any service provided by the Company has been approved or endorsed by Warburg Pincus LLC, GTCR LLC, any Sponsor or any of their
Affiliates. The Company shall obtain the written consent from the applicable Designated Sponsor Fund prior to the Company’s issuance of any public statement regarding any Sponsor. 

Section 6.22.    Exculpation Among Stockholders. Each Stockholder acknowledges that it is not relying upon any
other Person in making its investment or decision to invest in the Company (other than the Company pursuant to any written agreement). Each Stockholder agrees that no Stockholder nor their respective Affiliates, controlling persons, officers,
directors, partners, agents or employees of any Stockholder shall be liable to any other Stockholder for any action heretofore or hereafter taken or omitted to taken by any of them in connection with their purchase or acquisition of any Company
Shares, except with respect to breaches hereof. 
 [SIGNATURE PAGES FOLLOW] 

  
 26 

 IN WITNESS HEREOF, the Parties have duly executed this Agreement as of the date first above
written. 
  

			
	COMPANY
	
	SOTERA HEALTH COMPANY

 
			
		
	By:	 	  

 
			
	 Name:
 Title:
	 	

  
 [Signature Page to
Stockholders Agreement] 

 
			
	STOCKHOLDERS
	
	WARBURG PINCUS PRIVATE EQUITY XI, L.P.
		
	By:	 	Warburg Pincus XI, L.P., its general partner
		
	By:	 	WP Global LLC, its general partner
		
	By:	 	Warburg Pincus & Co., its managing member
		
	By:	 	  

	 Name:
 Title:

	
	WARBURG PINCUS XI PARTNERS, L.P.
		
	By:	 	Warburg Pincus XI, L.P., its general partner
		
	By:	 	WP Global LLC, its general partner
		
	By:	 	Warburg Pincus & Co., its managing member
		
	By:	 	  

	 Name:
 Title:

	
	WP XI PARTNERS, L.P.
		
	By:	 	Warburg Pincus XI, L.P., its general partner
		
	By:	 	WP Global LLC, its general partner
		
	By:	 	Warburg Pincus & Co., its managing member
		
	By:	 	  

	 Name:
 Title:

  
 [Signature Page to
Stockholders Agreement] 

			
	WARBURG PINCUS PRIVATE EQUITY XI-B, L.P.
		
	By:	 	Warburg Pincus XI, L.P., its general partner
		
	By:	 	WP Global LLC, its general partner
		
	By:	 	Warburg Pincus & Co., its managing member
		
	By:	 	  

	 Name:
 Title:

	
	WARBURG PINCUS PRIVATE EQUITY XI-C, L.P.
		
	By:	 	Warburg Pincus (Cayman) XI, L.P., its general partner
		
	By:	 	Warburg Pincus XI-C, LLC, its general partner
	
	By:  Warburg Pincus (Bermuda) Private Equity GP Ltd., its sole member
		
	By:	 	  

	 Name:
 Title:

	
	BULL CO-INVEST, L.P.
		
	By:	 	WP Bull Manager, LLC, its general partner
		
	By:	 	Warburg Pincus & Co., its managing member
		
	By:	 	  

	 Name:
 Title:

  
 [Signature Page to
Stockholders Agreement] 

 
			
	GTCR FUND XI/A LP
	
	By:      GTCR Partners XI/A&C LP, its general partner
	
	By:      GTCR Investment XI LLC, its general partner

 
			
		
	By:	 	  

	Name:	 	
	Title:	 	Manager

 
			
	
	GTCR FUND XI/C LP
	
	By:      GTCR Partners XI/A&C LP, its general partner
	
	By:      GTCR Investment XI LLC, its general partner

 
			
		
	By:	 	  

	Name:	 	
	Title:	 	Manager

 
			
	
	GTCR CO-INVEST XI LP
	
	By:      GTCR Investment XI LLC, its general partner

 
			
		
	By:	 	  

	Name:	 	
	Title:	 	Manager

  
 [Signature Page to
Stockholders Agreement] 

 
			
	[STOCKHOLDER]

 
			
		
	By:	 	  

 
			
	 Name:
 Title:

  
 [Signature Page to
Stockholders Agreement] 

 EXHIBIT A 

JOINDER TO STOCKHOLDERS AGREEMENT 

This Joinder Agreement (this “Joinder Agreement”) is made as of the date written below by the undersigned (the
“Joining Party”) in accordance with the Stockholders Agreement dated as of [•], 2020 (the “Stockholders Agreement”) by and among Sotera Health Company and certain other persons named therein, as the same may be
amended from time to time. Capitalized terms used, but not defined, herein shall have the meaning ascribed to such terms in the Stockholders Agreement. 

The Joining Party hereby acknowledges, agrees and confirms that, by its execution of this Joinder Agreement, the Joining Party shall be deemed
to be a party to and “Stockholder” under the Stockholders Agreement as of the date hereof and shall have all of the rights and obligations of the Stockholder from whom it has acquired Company Shares (to the extent permitted by the
Stockholders Agreement) as if the Joining Party had executed the Stockholders Agreement. The Joining Party hereby ratifies, as of the date hereof, and agrees to be bound by, all of the terms, provisions and conditions contained in the Stockholders
Agreement. The Joining Party hereby makes, as of the date hereof, the representations and warranties set forth in Article V of the Stockholders Agreement. 

IN WITNESS WHEREOF, the undersigned has executed this Joinder Agreement as of the date written below. 

 

			
	Date:
	
	[NAME OF JOINING PARTY].

 
			
		
	By:	 	  

 
			
	 Name:
 Title:

Address for Notices:

 AGREED ON THIS      day of
                            , 20     : 

SOTERA HEALTH COMPANY 
  

			
	By:	 	  

	Name:
	Title:
	Address for Notices:

 * * * 

  
 A-1 

 Spouse’s Joinder Agreement 

The undersigned, being the spouse of                 
                , agrees to be bound by the provisions of this Joinder Agreement, to the extent applicable to the undersigned. 

 

			
	By:	 	  

 
			
	Name:	 	

  
 A-2 

 EXHIBIT B 

NAMES AND ADDRESSES OF STOCKHOLDERS 

  
 B-1EX-10.31

 Exhibit 10.31 

SOTERA HEALTH COMPANY 

Form of Restricted Stock Agreement and Acknowledgement 

This Restricted Stock Agreement and Acknowledgement (this “Agreement”) is made effective as of [•], 2020 (the
“Effective Date”), among Sotera Health Company, a Delaware corporation (the “Company”), Sotera Health Topco Parent, L.P. (the “Partnership”), and the party set forth on the signature page hereto
(the “Holder”). 
 WHEREAS, the Holder is a party to that certain Amended and Restated Agreement of Limited Partnership of
the Partnership, dated as of June 30, 2020, among Sotera Health GP, LLC (the “General Partner”), the Holder and the other parties thereto (the “Partnership Agreement”), and the Holder is a limited partner of
the Partnership; 
 WHEREAS, the Holder holds a number of Class A Units, Class B-1 Units, Class B-2 Units and/or Class D Units (each, as defined in the Partnership Agreement and, collectively, the “Units” and the Class B-1 Units and Class B-2 Units, collectively, the “Class B Units”) of the Partnership, as set forth on Schedule A attached hereto, which such Units were issued pursuant to the
Partnership Agreement and/or one or more unit grant or subscription agreements; 
 WHEREAS, effective substantially concurrently with the
time of effectiveness (the “Effective Time”) of the Company’s Registration Statement on Form S-1 (the “Registration Statement”) related to the initial public offering
(the “IPO”) of the Company’s common stock, $0.01 par value per share (“Common Stock”), under the Securities Act of 1933, as amended (the “Securities Act”), the Partnership will distribute
shares of Common Stock to the Holder in accordance with Section 4.01 of the Partnership Agreement with an equivalent value based on the IPO Price (as defined below), subject to the terms and conditions set forth herein (the
“Distribution”); 
 WHEREAS, following the Distribution, the Partnership shall enter into dissolution and upon completion
of the dissolution and winding up of the Partnership, all of Holder’s Units will be cancelled for no consideration and the Partnership shall cease to exist; 

WHEREAS, the Holder, the Company and limited partners of the Partnership will enter into a stockholders agreement (the “Stockholders
Agreement”) which, among other things, sets forth agreements among the parties thereto with respect to certain corporate governance matters and restrictions on the transfer of shares of Common Stock by Management Stockholders. 

NOW, THEREFORE, in consideration of the mutual promises contained herein and for other good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, the parties hereto agree as follows: 

 1. Certain Definitions. Capitalized terms used but not defined herein shall have the
meaning ascribed to such terms in the Stockholders Agreement. 
 2. Restricted Shares. 

(a) Subject to the terms and conditions set forth in this Agreement, effective as of the Effective Time, the Partnership will distribute to the
Holder that number of vested shares of Common Stock (the “Vested Shares”) and unvested shares of Common Stock (the “Unvested Shares”, and together with the Vested Shares, the “Restricted Shares”) as
set forth on Schedule A attached hereto. 
 (b) The number of Restricted Shares shall be calculated by the board of managers of the
Partnership, in its sole discretion, based on the price at which Common Stock is sold to the public in the IPO (the “IPO Price”) and the relative rights, preferences and priorities applicable to the Units under the Partnership
Agreement immediately prior to the Distribution, including, without limitation, to recoup any prior Tax Distribution (as defined in the Partnership Agreement) previously made to the Holder pursuant to the terms and conditions of the Partnership
Agreement. 
 (c) The Holder acknowledges and agrees that in connection with the Distribution, (i) no fractional shares of Common Stock
(or cash with a value equal to any fractional share) shall be distributed to Holder and (ii) in accordance with the Partnership Agreement, fractional Company Shares that would otherwise have been distributable to the Holder have been rounded up
or rounded down in the discretion of the board of managers of the Partnership to ensure that the aggregate number of issued and outstanding Company Shares following the Distribution will be the same as the number disclosed in connection with the
IPO. 
 (d) The Restricted Shares will initially be recorded by the Company in book entry only form in the name of the Holder. 

(e) Except as expressly set forth or incorporated by reference herein, upon Distribution to the Holder, the Restricted Shares shall not be
subject to any terms and conditions of the Partnership Agreement or Holder’s Unit Grant Notice (as defined in the Partnership Agreement) or subscription agreement. 

3. Vesting and Forfeiture. 

(a) Vested Shares. [Except as provided for in Section 3(c) of this Agreement,] the Vested Shares shall not be subject to any
vesting or forfeiture restrictions following the Distribution. 
 (b) Unvested Shares. The Unvested Shares shall continue to be
subject to the vesting and forfeiture terms and conditions set forth in Sections 3.02(c) and 3.03(a) of the Partnership Agreement (as modified, if at all, by the terms and conditions of Holder’s Unit Grant Notice) to the same extent such terms
and conditions would have applied to the unvested Class B Units with respect to which such Unvested Shares were distributed and such terms and conditions are incorporated herein by reference as if fully set forth herein (it being understood and
agreed that references to the “Partnership” in such terms and conditions shall be deemed to be references to the “Company” as the context may require). Upon vesting in accordance with the foregoing [and except as provided for in
Section 3(c) of this Agreement], such Unvested Share shall not be subject to any further vesting or forfeiture restrictions 
  

  
 2 

 (c) [Limited Forfeiture. Notwithstanding the foregoing, any Restricted Shares
received in respect of a Class B-1 Unit that was originally granted to Holder within the twelve (12) month period immediately prior to the termination of Holder’s Services shall be immediately
forfeited and cancelled as a result of such termination of Services (regardless of the reason for such termination).] 
 4. Cash
Distribution. If the Holder is entitled to a distribution of cash from the Partnership in respect of Class B Units that were not vested at the time of prior distributions made by the Partnership in 2019 (the “Unvested
Distributions”), the Holder will receive a cash distribution from the Partnership. The Unvested Distributions will be net of any Tax Distributions that the terms and conditions of the Partnership Agreement require be recouped from future
distributions. Accordingly, if the amount of Tax Distributions to be so recouped exceeds the amount of the Unvested Distribution the Holder is otherwise entitled to receive, the Holder will not receive any cash payment for the Unvested Distributions
and the amount of such excess will reduce the number of Restricted Shares to which the Holder is entitled in the Distribution. Any remaining cash held by the Partnership following the Unvested Distributions shall be distributed in accordance with
Section 4.01 of the Partnership Agreement to all limited partners of the Partnership. 
 5. Stockholders Agreement. In order to
receive a distribution of the Restricted Shares, the Holder shall be required to validly execute and deliver to the Company this Agreement and the joinder to the Stockholders Agreement attached hereto as Exhibit I and the Holder agrees to be
bound by the terms of the Stockholders Agreement. The Holder and the Restricted Shares shall be subject to the terms and conditions of the Stockholders Agreement, including, without limitation, any restrictions on Transfer under the terms and
conditions of the Stockholders Agreement. The Holder acknowledges and agrees that the Restricted Shares are “Company Shares” held by such Holder on the date hereof. As a result, without limiting the limitations on the Restricted Shares in
this Agreement, the Restricted Shares (regardless of whether vested or unvested) are subject to the restrictions on transfer set forth in Section 4.01 of the Stockholders Agreements.  

6. Tax Matters. 
 (a)
Section 83(b) Election; Acknowledgments. 
 (i) Within 10 days after the Effective Time, the Holder shall provide the
Company with a copy of a completed election under Section 83(b) of the Internal Revenue Code of 1986, as amended, and the regulations promulgated thereunder (the “Code”) in the form of Exhibit II attached hereto with
respect to the [Restricted Shares/Unvested Shares]. The Holder shall timely file (within 30 days after the Effective Time, via certified mail, return receipt requested) such election with the Internal Revenue Service and thereafter shall certify to
the Company that the Holder has made such timely filing and furnish a copy of such filing to the Company. IN FURTHERANCE, AND NOT IN LIMITATION OF THE FOREGOING, THE HOLDER ACKNOWLEDGES THAT IT IS SOLELY THE HOLDER’S RESPONSIBILITY AND NOT
THE COMPANY’S RESPONSIBILITY TO FILE TIMELY THE ELECTION UNDER SECTION 83(B) OF THE CODE, EVEN IF THE HOLDER REQUESTS THE COMPANY OR ITS REPRESENTATIVES TO MAKE THIS FILING ON THE HOLDER’S BEHALF. 

  
 3 

 (ii) The Holder acknowledges that he or she is responsible for obtaining the
advice of the Holder’s own tax advisors with respect to the Distribution and the acquisition of the Restricted Shares, and the Holder is relying solely on such advisors and not on any statements or representations of the Company or any of its
agents with respect to the tax consequences relating to the Distribution or the Restricted Shares, including, without limitation, the consequences of a Section 83(b) election, as well as the receipt, vesting, holding and sale of the Restricted
Shares. The Holder understands that the Holder (and not the Company) shall be responsible for the Holder’s tax liability that may arise in connection with Distribution and the acquisition, vesting and/or disposition of the Restricted Shares.

 (b) Withholding. The Holder may be required to pay to the Company or any of its Affiliates, and the Company shall have the right
and is hereby authorized to withhold, any applicable withholding taxes in respect of the Restricted Shares, their grant or vesting or any payment or transfer with respect to the Restricted Shares at the minimum applicable statutory rates, and to
take such action as may be necessary in the opinion of the Board or any one or more committees or subcommittees of the Board, as such may be designated by the Board from time to time, to satisfy all obligations for the payment of such withholding
taxes. 
 7. [Agreement in Connection with Initial Public Offering. The Holder shall be subject to the restrictions contained in the lock-up agreement with the IPO underwriters executed by Holder as of [•], 2020 and entered into in connection with the IPO.] 

8. Adjustments for Stock Splits, Stock Dividends, etc. If from time to time there is any stock split, stock dividend, stock distribution
or other reclassification of the Common Stock of the Company, any and all new, substituted or additional securities to which the Holder is entitled by reason of his, her or its ownership of the Restricted Shares shall be immediately subject to the
terms and conditions of this Agreement and the Stockholders Agreement in the same manner and to the same extent as the Restricted Shares. 

9. Restrictive Covenants; Other Obligations. The Holder shall remain subject to any
non-competition, non-disclosure, or non-solicitation terms or obligations to maintain confidential information contained in any
applicable employment agreement, grant agreement or any other agreement to which the Holder is subject. The Holder acknowledges and agrees that the Partnership has fully performed its obligations with respect to the Units and does hereby forever
waive, release and discharge the Partnership to the fullest extent permitted by law from any and all actions, causes of action, claims, demands, demands for indemnification, damages, losses, liabilities, awards, judgments, costs, expenses, debts,
dues and suits of every kind, nature and description whatsoever now existing or hereafter arising with respect to the Units. The Holder acknowledges and agrees the Company shall have the right to enforce the terms under any grant agreement and
subscription agreement with the Holder (as modified by this Agreement) as if the Units subject to such grant agreement or subscription agreement were Company Shares. 

  
 4 

 10. Miscellaneous. 

(a) Further Acknowledgements and Agreements. The Holder acknowledges that the Restricted Shares have not been registered under the
Securities Act, and accordingly, may not be sold or transferred except pursuant to an effective registration statement under the Securities Act or pursuant to an applicable exemption therefrom. The Holder hereby further acknowledges and agrees that:

 (i) Holder has read this Agreement and the Stockholders Agreement and understands the terms and conditions of this
Agreement and the Stockholders Agreement; and 
 (ii) upon consummation of the Distribution and subsequent dissolution of the
Partnership, the Holder will (A) no longer hold any Units, (B) no longer be a Limited Partner (as defined in the Partnership Agreement) and (C) will have no surviving rights with respect to the Units under the Partnership Agreement.

 (b) Waiver; Amendment. The Board or the Compensation Committee of the Board may waive any conditions or rights under, amend any
terms of, or alter this Agreement, but no such waiver, amendment, alteration, suspension, discontinuance, cancellation or termination shall materially and adversely affect the rights of the Holder hereunder without the consent of the Holder.
Notwithstanding anything to the contrary in this Agreement, the Company may amend and update the number of Restricted Shares set forth on Schedule A attached hereto prior to or following the effective date of the IPO based on the IPO Price.

 (c) Cooperation. Upon the vesting of any Unvested Shares, the Holder will make or enter into such written representations,
warranties and agreements as the Board or any one or more committees or subcommittees of the Board, as such may be designated by the Board from time to time, may reasonably request in order to comply with applicable securities laws or this
Agreement. The Holder hereby further agrees to cooperate with the Company in taking any action reasonably necessary or advisable, including but not limited to executing any further documentation required by the Company, to consummate the
transactions contemplated by this Agreement. 
 (d) No Right to Continued Service. The Holder acknowledges and agrees that,
notwithstanding the fact that the vesting of the Unvested Shares is contingent upon his or her continued Service by the Company, this Agreement does not constitute an express or implied promise of continued Service or confer upon the Holder any
rights with respect to continued Service by the Company. 
 (e) Notices. Any notice necessary under this Agreement shall be addressed
to the Company in care of its Secretary at the principal executive office of the Company and to the Holder at the address set forth on the signature page attached hereto or to either party at such other address as either party hereto may hereafter
designate in writing to the other. Any such notice shall be deemed effective upon receipt thereof by the addressee. 

  
 5 

 (f) Governing Law. This Agreement shall be construed, interpreted and enforced in
accordance with the internal laws of the State of Delaware, without regard to any applicable conflicts of law provisions. 

*     *     * 

  
 6 

 IN WITNESS WHEREOF, effective as of the Effective Date, the Holder acknowledges and accepts the terms of
this Agreement. 
  

	
	 HOLDER:

	
	 [Name]

  

	
	 Acknowledged and confirmed by:

	
	 SOTERA HEALTH COMPANY

	
	 By:

	 Name:

	 Title:

	
	 SOTERA HEALTH TOPCO PARENT, L.P.

	
	 By:

	 Name:

	 Title:

 [Signature Page to Restricted Stock Agreement and Acknowledgement] 

 SCHEDULE A 

 

																	
	 Units
	 	  	Restricted Shares	 
	 Class of Units
	  	Number of
Vested Units	 	  	Number of
Unvested
Units	 	  	Number of Vested
Shares	 	  	Number of
Unvested
Shares	 
	 Class A Units
	  				  				  				  			
	 Class B-1 Units
	  				  				  				  			
	 Class B-2 Units
	  				  				  				  			
	 Class D Units
	  				  				  				  			
		  	  
	  
	 	  	  
	  
	 	  	  
	  
	 	  	  
	  
	 
	 Total:
	  
	  				  			
		  	  
	  
	 	  	  
	  
	 	  	  
	  
	 	  	  
	  
	 

 Exhibit I 

JOINDER TO STOCKHOLDERS AGREEMENT 

This Joinder Agreement (this “Joinder Agreement”) is made as of the date written below by the undersigned (the
“Joining Party”) in accordance with the Stockholders Agreement dated as of [●], 2020 (the “Stockholders Agreement”) by and among Sotera Health Company and certain other persons named therein, as the same may
be amended from time to time. Capitalized terms used, but not defined, herein shall have the meaning ascribed to such terms in the Stockholders Agreement. 

The Joining Party hereby acknowledges, agrees and confirms that, by its execution of this Joinder Agreement, the Joining Party shall be deemed
to be a party to and “Stockholder” under the Stockholders Agreement as of the date hereof and shall have all of the rights and obligations of the Stockholder from whom it has acquired Company Shares (to the extent permitted by the
Stockholders Agreement) as if the Joining Party had executed the Stockholders Agreement. The Joining Party hereby ratifies, as of the date hereof, and agrees to be bound by, all of the terms, provisions and conditions contained in the Stockholders
Agreement. The Joining Party hereby makes, as of the date hereof, the representations and warranties set forth in Article V of the Stockholders Agreement. 

IN WITNESS WHEREOF, the undersigned has executed this Joinder Agreement as of the date written below. 

 

			
	Date:
	
	[NAME OF JOINING PARTY]
		
	By:	 	  

 
			
	Name:	 	
	Title:	 	
	Address for Notices:

 AGREED ON THIS _____ day of ___________ , 20 __: 

SOTERA HEALTH COMPANY 
  

			
	By:	 	  

			
	Name:
	Title:	 	
	Address for Notices:

 * * * 

 Spouse’s Joinder Agreement 

The undersigned, being the spouse of
                
                , agrees to be bound by the provisions of this Joinder Agreement, to the extent applicable to the undersigned. 

 

			
	 By:
	 	
 

			
	 Name:
	 	

 Exhibit II 

ELECTION TO INCLUDE VALUE OF RESTRICTED PROPERTY IN 

GROSS INCOME IN YEAR OF TRANSFER UNDER SECTION 83(b) 

OF THE INTERNAL REVENUE CODE 

Internal Revenue Service Center at: 
  

 
  

Election Pursuant to Code Sec. 83(b) 
  

					
	Name:	 	  
	  	(“Taxpayer”)
	Address:      	 	  
	  	
		 	  
	  	
		 	  
	  	

 Social Security Number: __________________ 

Tax Year End: __________ 
  

	 	1.	 Taxable Year for which the election is made: 2020 

 

	 	2.	 Property transferred: Shares of Common Stock of Sotera Health Company, a Delaware corporation (the
“Company”), subject to time-based and/or performance-based vesting restrictions. 

  

	 	3.	 Date on which property was transferred: [●], 2020 

 

	 	4.	 The aggregate fair market value (on a liquidation basis) on [●], 2020 of the property with
respect to which the election is being made, determined without regard to any lapse restrictions: $[●]. 

  

	 	5.	 Total amount paid for the property: $[●]. 

 

	 	6.	 Nature of restrictions to which the property is subject: If the undersigned ceases to be employed by the
Company or certain performance metrics are not achieved, the shares of Common Stock may be subject to forfeiture. The shares of Common Stock are also subject to the terms and conditions of a Stockholders Agreement, including transfer restrictions.

 *    *    *    *    * 

 A copy of this election is being furnished to the Company pursuant to Treasury Regulation §1.83-2(e)(7). 
  

							
	  
	  	        	  	Date:	  	  

	Name:

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