# EDGAR Filing Document

**Accession Number:** 0001822479
**File Stem:** 0001104659-26-062645
**Filing Date:** 2026-5
**Character Count:** 16765
**Document Hash:** 5ea3a9420202c14ff14a60d67d1e7d6d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-062645.hdr.sgml**: 20260515

**ACCESSION NUMBER**: 0001104659-26-062645

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260515

**DATE AS OF CHANGE**: 20260515

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Sotera Health Co
- **CENTRAL INDEX KEY:** 0001822479
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-MISC HEALTH & ALLIED SERVICES, NEC [8090]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 473531161
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-92191
- **FILM NUMBER:** 26988549

**BUSINESS ADDRESS:**
- **STREET 1:** 9100 SOUTH HILLS BLVD, SUITE 300
- **CITY:** BROADVIEW HEIGHTS
- **STATE:** OH
- **ZIP:** 44147
- **BUSINESS PHONE:** 440-262-1410

**MAIL ADDRESS:**
- **STREET 1:** 9100 SOUTH HILLS BLVD, SUITE 300
- **CITY:** BROADVIEW HEIGHTS
- **STATE:** OH
- **ZIP:** 44147

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Sotera Health Topco, Inc.
- **DATE OF NAME CHANGE:** 20200824
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Sachem Head Capital Management LP
- **CENTRAL INDEX KEY:** 0001582090

**ORGANIZATION NAME:**
- **EIN:** 800872416
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G

**BUSINESS ADDRESS:**
- **STREET 1:** 250 WEST 55TH STREET
- **STREET 2:** 34TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10019
- **BUSINESS PHONE:** 212-714-3300

**MAIL ADDRESS:**
- **STREET 1:** 250 WEST 55TH STREET
- **STREET 2:** 34TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10019

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

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**Issuer:** Sotera Health Co

**Title of Class of Securities:** Common Stock, par value $0.01 per share

**CUSIP Number:** —

**Date of Event Which Requires Filing of this Statement:** 05/11/2026

**Check the appropriate box to designate the rule pursuant to which this Schedule is filed:**

- [ ] Rule 13d-1(b)

- [x] Rule 13d-1(c)

- [ ] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>Sachem Head Capital Management LP | Names of Reporting Persons<br>Sachem Head Capital Management LP |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>DE | Citizenship or Place of Organization<br>DE |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>15560000.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>15560000.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>15560000.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>15560000.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>5.46% | Percent of Class Represented by Amount in Row (9)<br>5.46% |
| 12. | Type of Reporting Person (See Instructions)<br>IA | Type of Reporting Person (See Instructions)<br>IA |

**Comment for Type of Reporting Person:** The percentages used herein are calculated based upon 285,166,994 shares of Common Stock outstanding (as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the Securities and Exchange Commission on May 5, 2026).

---

| 1. | Names of Reporting Persons<br>Uncas GP LLC | Names of Reporting Persons<br>Uncas GP LLC |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>DE | Citizenship or Place of Organization<br>DE |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>15560000.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>15560000.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>15560000.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>15560000.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>5.46% | Percent of Class Represented by Amount in Row (9)<br>5.46% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** The percentages used herein are calculated based upon 285,166,994 shares of Common Stock outstanding (as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the Securities and Exchange Commission on May 5, 2026).

---

| 1. | Names of Reporting Persons<br>Sachem Head GP LLC | Names of Reporting Persons<br>Sachem Head GP LLC |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>DE | Citizenship or Place of Organization<br>DE |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>11450000.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>11450000.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>11450000.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>11450000.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>4.02% | Percent of Class Represented by Amount in Row (9)<br>4.02% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** The percentages used herein are calculated based upon 285,166,994 shares of Common Stock outstanding (as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the Securities and Exchange Commission on May 5, 2026).

---

| 1. | Names of Reporting Persons<br>Ferguson Scott D. | Names of Reporting Persons<br>Ferguson Scott D. |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>X1 | Citizenship or Place of Organization<br>X1 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>15560000.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>15560000.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>15560000.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>15560000.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>5.46% | Percent of Class Represented by Amount in Row (9)<br>5.46% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

**Comment for Type of Reporting Person:** The percentages used herein are calculated based upon 285,166,994 shares of Common Stock outstanding (as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the Securities and Exchange Commission on May 5, 2026).

---

**Item 1(a). Name of Issuer:**
Sotera Health Co

**Item 1(b). Address of Issuer's Principal Executive Offices:**
9100 South Hills Blvd, Suite 300, Broadview Heights, OH 44147

**Item 2(a). Name of Person Filing:**
This statement is filed by:

(i)   Sachem Head Capital Management LP, a Delaware limited partnership ("Sachem Head");
(ii)  Uncas GP LLC, a Delaware limited liability company ("SH Management");
(iii) Sachem Head GP LLC, a Delaware limited liability company ("Sachem Head GP"); and
(iv) Scott D. Ferguson, a citizen of the United States of America ("Mr. Ferguson").

The foregoing persons are hereinafter sometimes collectively referred to as the "Reporting Persons."

Sachem Head serves as investment advisor to certain affiliated funds, including Sachem Head LP, a Delaware limited partnership ("SH"), Sachem Head Master LP, an exempted limited partnership organized under the laws of the Cayman Islands ("SHM"), and SH Stony Creek Master Ltd., an exempted company incorporated under the laws of the Cayman Islands ("Stony Creek"), and as such may be deemed to have the shared power to vote or direct the vote of (and the shared power to dispose or direct the disposition of) all of the shares of Common Stock (as defined in Item 2(d) below) held by SH, SHM, and Stony Creek.

SH Management serves as the sole general partner of Sachem Head, and as such may be deemed to have the shared power to vote or direct the vote of (and the shared power to dispose or direct the disposition of) all of the shares of Common Stock reported herein.  Sachem Head GP serves as the general partner of certain affiliated funds, including SH and SHM, and as such may be deemed to have the shared power to vote or direct the vote of (and the shared power to dispose or direct the disposition of) all of the shares of Common Stock held by SH and SHM.  Mr. Ferguson serves as the managing partner of Sachem Head and the managing member of SH Management and Sachem Head GP, and as such may be deemed to have the shared power to vote or direct the vote of (and the shared power to dispose or direct the disposition of) all of the shares of Common Stock reported herein.

The filing of this statement should not be construed as an admission that any of the Reporting Persons is, for the purposes of Section 13 of the Act, the beneficial owner of the Common Stock reported herein.

**Item 2(b). Address of Principal Business Office:**
The address of the business office of each of the Reporting Persons is 250 West 55th Street, 34th Floor, New York, New York 10019.

**Item 2(c). Citizenship:**
Sachem Head is a Delaware limited partnership. Each of SH Management and Sachem Head GP is a Delaware limited liability company.  Mr. Ferguson is a citizen of the United States.

**Item 2(d). Title of Class of Securities:**
Common Stock, par value $0.01 per share

**Item 2(e). CUSIP Number:**
—

**Item 3. If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:**

(a) [ ] Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b) [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c) [ ] Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d) [ ] Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e) [ ] An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f) [ ] An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g) [ ] A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h) [ ] A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i) [ ] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j) [ ] A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), if filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:

(k) [ ] Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).

**Item 4. Ownership:**

**(a) Amount beneficially owned:**

The information required by Items 4(a) - (c)  is set forth in Rows (5) - (11) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. The percentages used herein are calculated based upon 285,166,994 shares of Common Stock outstanding (as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the Securities and Exchange Commission on May 5, 2026).

**(b) Percent of class:**

See response to Item 11 on the cover page for each Reporting Person

**(c) Number of shares as to which the person has:**

**(i) Sole power to vote or to direct the vote:**

See response to Item 5 on the cover page for each Reporting Person

**(ii) Shared power to vote or to direct the vote:**

See response to Item 6 on the cover page for each Reporting Person

**(iii) Sole power to dispose or to direct the disposition of:**

See response to Item 7 on the cover page for each Reporting Person

**(iv) Shared power to dispose or to direct the disposition of:**

See response to Item 8 on the cover page for each Reporting Person

**Item 5. Ownership of Five Percent or Less of a Class.**

[x] If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following.

**Item 6. Ownership of More than 5 Percent on Behalf of Another Person.**

See Item 2.

**Item 7. Identification and Classification of the Subsidiary**

Not Applicable

**Item 8. Identification and Classification of Members of the Group**

Not Applicable

**Item 9. Notice of Dissolution of Group**

Not Applicable

**Item 10. Certification:**

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Sachem Head Capital Management LP**

**Date:** 05/15/2026

**By:** /s/ Scott D. Ferguson

**Name & Title:** Managing Member

**Uncas GP LLC**

**Date:** 05/15/2026

**By:** /s/ Scott D. Ferguson

**Name & Title:** Managing Member

**Sachem Head GP LLC**

**Date:** 05/15/2026

**By:** /s/ Scott D. Ferguson

**Name & Title:** Managing Member

**Ferguson Scott D.**

**Date:** 05/15/2026

**By:** /s/ Scott D. Ferguson

**Name & Title:** Managing Member