# EDGAR Filing Document

**Accession Number:** 0001822479
**File Stem:** 0001398344-26-003310
**Filing Date:** 2026-2
**Character Count:** 18295
**Document Hash:** 197d189a7268083fb72cfcd683e8c399
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001398344-26-003310.hdr.sgml**: 20260217

**ACCESSION NUMBER**: 0001398344-26-003310

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260217

**DATE AS OF CHANGE**: 20260217

**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:** 26643613

**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:** Sessa Capital (Master), L.P.
- **CENTRAL INDEX KEY:** 0001618360

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

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

**BUSINESS ADDRESS:**
- **STREET 1:** 888 SEVENTH AVENUE
- **STREET 2:** 30TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10019
- **BUSINESS PHONE:** 212-257-4410

**MAIL ADDRESS:**
- **STREET 1:** 888 SEVENTH AVENUE
- **STREET 2:** 30TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10019

## Ex-1

**SCHEDULE 13G**

**CUSIP No.** 83601L102

EXHIBIT INDEX TO SCHEDULE 13G

<u>EXHIBIT 1</u>

Joint Filing Agreement, dated as of February 17, 2026, by and between Sessa Capital (Master), L.P., Sessa Capital Special Opportunity Fund II, L.P., Sessa Capital GP, LLC, Sessa Capital IM, L.P., Sessa Capital IM GP, LLC, and John Petry.

**SCHEDULE 13G**

**CUSIP No.** 83601L102

Exhibit 1

JOINT FILING AGREEMENT

Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned agree, as of February 17, 2026, that only one statement containing the information required by Schedule 13G, and each amendment thereto, need be filed with respect to the ownership by each of the undersigned of shares of Common Stock of Sotera Health Co and such statement to which this Joint Filing Agreement is attached as Exhibit 1 is filed on behalf of each of the undersigned.

---

| | |
|:---|:---|
| By: | /s/ John Petry |
|  | John Petry |
|  | John Petry, individually, as manager of Sessa Capital GP, LLC, the general partner of Sessa Capital (Master), L.P. and Sessa Capital Special Opportunity Fund II, L.P., and as manager of Sessa Capital IM GP, LLC, the general partner of Sessa Capital IM, L.P. |
| Date: | February 17, 2026 |

---

### 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, $0.01 par value per share

**CUSIP Number:** 83601L102

**Date of Event Which Requires Filing of this Statement:** 12/31/2025

**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>Sessa Capital (Master), L.P. | Names of Reporting Persons<br>Sessa Capital (Master), L.P. |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>E9 | Citizenship or Place of Organization<br>E9 |
| 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>15919619.00 |
| 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>15919619.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>15919619.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>15919619.00 |
| 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>5.6% | Percent of Class Represented by Amount in Row (9)<br>5.6% |
| 12. | Type of Reporting Person (See Instructions)<br>PN | Type of Reporting Person (See Instructions)<br>PN |

---

| 1. | Names of Reporting Persons<br>Sessa Capital Special Opportunity Fund II, L.P. | Names of Reporting Persons<br>Sessa Capital Special Opportunity Fund II, L.P. |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (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>4630381.00 |
| 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>4630381.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>4630381.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>4630381.00 |
| 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>1.63% | Percent of Class Represented by Amount in Row (9)<br>1.63% |
| 12. | Type of Reporting Person (See Instructions)<br>PN | Type of Reporting Person (See Instructions)<br>PN |

---

| 1. | Names of Reporting Persons<br>Sessa Capital GP, LLC | Names of Reporting Persons<br>Sessa Capital GP, LLC |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (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>20550000.00 |
| 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>20550000.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>20550000.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>20550000.00 |
| 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>7.23% | Percent of Class Represented by Amount in Row (9)<br>7.23% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

---

| 1. | Names of Reporting Persons<br>Sessa Capital IM, L.P. | Names of Reporting Persons<br>Sessa Capital IM, L.P. |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (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>20550000.00 |
| 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>20550000.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>20550000.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>20550000.00 |
| 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>7.23% | Percent of Class Represented by Amount in Row (9)<br>7.23% |
| 12. | Type of Reporting Person (See Instructions)<br>PN | Type of Reporting Person (See Instructions)<br>PN |

---

| 1. | Names of Reporting Persons<br>Sessa Capital IM GP, LLC | Names of Reporting Persons<br>Sessa Capital IM GP, LLC |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (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>20550000.00 |
| 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>20550000.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>20550000.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>20550000.00 |
| 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>7.23% | Percent of Class Represented by Amount in Row (9)<br>7.23% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

---

| 1. | Names of Reporting Persons<br>John Petry | Names of Reporting Persons<br>John Petry |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (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>20550000.00 |
| 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>20550000.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>20550000.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>20550000.00 |
| 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>7.23% | Percent of Class Represented by Amount in Row (9)<br>7.23% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

---

**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:**
(i) Sessa Capital (Master), L.P.
(ii) Sessa Capital Special Opportunity Fund II, L.P.
(iii) Sessa Capital GP, LLC
(iv) Sessa Capital IM, L.P.
(v) Sessa Capital IM GP, LLC
(vi) John Petry

**Item 2(b). Address of Principal Business Office:**
The address of the principal business office of each of the Reporting Persons is:

888 Seventh Avenue, 30th Floor, New York, NY 10019

**Item 2(c). Citizenship:**
(i) Sessa Capital (Master), L.P. - a Cayman Islands exempted limited partnership
(ii) Sessa Capital Special Opportunity Fund II, L.P. - a Delaware limited partnership
(iii) Sessa Capital GP, LLC - a Delaware limited liability company
(iv) Sessa Capital IM, L.P. - a Delaware limited partnership
(v) Sessa Capital IM GP, LLC - a Delaware limited liability company
(vi) John Petry - a United States citizen

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

**Item 2(e). CUSIP Number:**
83601L102

**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:**

(i) 15,919,619
(ii) 4,630,381
(iii) 20,550,000
(iv) 20,550,000
(v) 20,550,000
(vi) 20,550,000

**(b) Percent of class:**

(i) 5.60%
(ii) 1.63%
(iii) 7.23%
(iv) 7.23%
(v) 7.23%
(vi) 7.23%

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

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

(i) 0
(ii) 0
(iii) 0
(iv) 0
(v) 0
(vi) 0

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

(i) 15,919,619
(ii) 4,630,381
(iii) 20,550,000
(iv) 20,550,000
(v) 20,550,000
(vi) 20,550,000

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

(i) 0
(ii) 0
(iii) 0
(iv) 0
(v) 0
(vi) 0

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

(i) 15,919,619
(ii) 4,630,381
(iii) 20,550,000
(iv) 20,550,000
(v) 20,550,000
(vi) 20,550,000

**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.**

Not Applicable

**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.

**Sessa Capital (Master), L.P.**

**Date:** 02/17/2026

**By:** /s/ John Petry

**Name & Title:** John Petry

**Sessa Capital Special Opportunity Fund II, L.P.**

**Date:** 02/17/2026

**By:** /s/ John Petry

**Name & Title:** John Petry

**Sessa Capital GP, LLC**

**Date:** 02/17/2026

**By:** /s/ John Petry

**Name & Title:** John Petry

**Sessa Capital IM, L.P.**

**Date:** 02/17/2026

**By:** /s/ John Petry

**Name & Title:** John Petry

**Sessa Capital IM GP, LLC**

**Date:** 02/17/2026

**By:** /s/ John Petry

**Name & Title:** John Petry

**John Petry**

**Date:** 02/17/2026

**By:** /s/ John Petry

**Name & Title:** John Petry