SEC FORM 3

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Klaben Matthew J

(Last)

(First)

(Middle)

C/O SOTERA HEALTH COMPANY

9100 SOUTH HILLS BDVD, SUITE 300

(Street)

BROADVIEW HEIGHTS

44147

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
10/01/2022

3. Issuer Name and Ticker or Trading Symbol
Sotera Health Co [ SHC ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Interim SVP, GC and Secretary

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock, $0.01 par value per share ("Common Stock")	37,703⁽¹⁾	D
Common Stock	314,286⁽²⁾	I	By grantor trust

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Stock Options	⁽³⁾	11/20/2030	Common Stock	134,161⁽³⁾	$23	D
Stock Options	⁽⁴⁾	03/02/2032	Common Stock	22,350⁽⁴⁾	$20.03	D

Explanation of Responses:

1. These securities consist of 5,489 shares of Common Stock and 32,214 Restricted Stock Units ("RSUs"). 23,478 RSUs were granted on November 20, 2020, and the balance of these RSUs will vest in three equal annual installments beginning on November 20, 2022, subject to the Reporting Person's continued service through each such date. 8,736 RSUs were granted on March 2, 2022, and will vest in three equal annual installments on each of the first three anniversaries of the date of grant, subject to the Reporting Person's continued service through each such date. The RSUs were granted pursuant to the terms of RSU agreements under the Sotera Health Company 2020 Omnibus Incentive Plan ("2020 Incentive Plan"). Each RSU represents the Reporting Person's right to receive one share of common stock, subject to vesting conditions.

2. Consists of 220,526 shares of vested Common Stock and 93,760 shares of unvested Common Stock. 93,760 of the unvested shares of Common Stock will vest as of the first date on which (i) certain investment funds and entities affiliated with Warburg Pincus LLC and GTCR, LLC (the "Sponsors") have received two and one-half times their invested capital in the company and (ii) the Sponsors' internal rate of return exceeds twenty percent.

3. These options were granted on November 20, 2020, pursuant to the terms of a stock option agreement under the 2020 Incentive Plan. The options vest in four equal installments on each of the first four anniversaries of the date of grant, subject to the Reporting Person's continued service through each such date.

4. These options were granted on March 2, 2022, pursuant to the terms of a stock option agreement under the 2020 Incentive Plan. The options vest in three equal installments on each of the first three anniversaries of the date of grant, subject to the Reporting Person's continued service through each such date.

Remarks:

Exhibit 24.1 - Power of Attorney

	/s/ Jessica L.M.H. Epp, Attorney-in-Fact	10/07/2022
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.