Key facts
- This page summarizes WARBURG PINCUS & CO.'s Form 4 filing for Sotera Health Co (SHC).
- 1 reported transaction and 0 derivative rows are listed below.
- Accepted by SEC: 15 May 2026, 16:48.
WARBURG PINCUS & CO. - 13 May 2026 Form 4 Insider Report for Sotera Health Co (SHC)
- Reporting relationship
- Director, 10%+ Owner
- Issuer ticker
- SHC
- Reported as of
- 13 May 2026
- Net transaction value
- -$289,753,576
- SEC form
- 4
- Accepted by SEC
- 15 May 2026, 16:48:45 UTC
- Prior SEC filing
- 10 Mar 2026
- Source filing
- View source filing
- Reporting owner signature
- See Exhibit 99.1
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
WARBURG PINCUS & CO. filed Form 4 for Sotera Health Co (SHC) on 15 May 2026.
Change
- Previous filing in this sequence was filed on 10 Mar 2026.
- Current net transaction value: -$289,753,576.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (10)
CIK 0000929408
Primary reporting owner
WARBURG PINCUS & CO.
- Relationship
- Director, 10%+ Owner
- Address
- 450 LEXINGTON AVENUE, NEW YORK, NY
- Signature
- See Exhibit 99.1
- Signature date
- 15 May 2026
CIK 0001832693
Bull Co-Invest L.P.
- Relationship
- Director, 10%+ Owner
- Address
- C/O WARBURG PINCUS LLC, 450 LEXINGTON AVENUE, NEW YORK
- Signature
- See Exhibit 99.1
- Signature date
- 15 May 2026
CIK 0001540163
Warburg Pincus Private Equity XI, L.P.
- Relationship
- Director, 10%+ Owner
- Address
- C/O WARBURG PINCUS LLC, 450 LEXINGTON AVENUE, 450 LEXINGTON AVENUE
- Signature
- See Exhibit 99.1
- Signature date
- 15 May 2026
CIK 0002014247
Bull Holdco L.P.
- Relationship
- Director, 10%+ Owner
- Address
- C/O WARBURG PINCUS LLC, 450 LEXINGTON AVENUE, NEW YORK
- Signature
- See Exhibit 99.1
- Signature date
- 15 May 2026
CIK 0001658787
Warburg Pincus Partners II, L.P.
- Relationship
- Director, 10%+ Owner
- Address
- 450 LEXINGTON AVENUE, C/O WARBURG PINCUS LLC, NEW YORK
- Signature
- See Exhibit 99.1
- Signature date
- 15 May 2026
CIK 0001540166
Warburg Pincus Private Equity XI-B, L.P.
- Relationship
- Director, 10%+ Owner
- Address
- C/O WARBURG PINCUS LLC, 450 LEXINGTON AVENUE, 450 LEXINGTON AVENUE
- Signature
- See Exhibit 99.1
- Signature date
- 15 May 2026
CIK 0001540386
Warburg Pincus XI Partners, L.P.
- Relationship
- Director, 10%+ Owner
- Address
- C/O WARBURG PINCUS LLC, 450 LEXINGTON AVENUE, NEW YORK
- Signature
- See Exhibit 99.1
- Signature date
- 15 May 2026
CIK 0001540167
Warburg Pincus XI, L.P.
- Relationship
- Director, 10%+ Owner
- Address
- C/O WARBURG PINCUS LLC, 450 LEXINGTON AVENUE, 450 LEXINGTON AVENUE
- Signature
- See Exhibit 99.1
- Signature date
- 15 May 2026
CIK 0001540385
WP Global LLC
- Relationship
- Director, 10%+ Owner
- Address
- C/O WARBURG PINCUS LLC, 450 LEXINGTON AVENUE, NEW YORK
- Signature
- See Exhibit 99.1
- Signature date
- 15 May 2026
CIK 0001540164
WP XI Partners, L.P.
- Relationship
- Director, 10%+ Owner
- Address
- C/O WARBURG PINCUS LLC, 450 LEXINGTON AVENUE, 450 LEXINGTON AVENUE
- Signature
- See Exhibit 99.1
- Signature date
- 15 May 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
SHC
transaction
Common Stock, $0.01 par value per share ("Common Stock")
Sale
- Transaction value
- $289,753,576
- Shares
- -19,102,952
- Change %
- -100%
- Price
- $15.17
- Shares after
- 0
- Date
- 13 May 2026
- Ownership
- See Footnote
- Footnotes
- F1, F2, F3, F4, F5
SHC
transaction
Common Stock, $0.01 par value per share ("Common Stock")
Sale
- Transaction value
- $289,753,576
- Shares
- -19,102,952
- Change %
- -100%
- Price
- $15.17
- Shares after
- 0
- Date
- 13 May 2026
- Ownership
- See Footnote
- Footnotes
- F1, F2, F3, F4, F5
SHC
transaction
Common Stock, $0.01 par value per share ("Common Stock")
Sale
- Transaction value
- $289,753,576
- Shares
- -19,102,952
- Change %
- -100%
- Price
- $15.17
- Shares after
- 0
- Date
- 13 May 2026
- Ownership
- See Footnote
- Footnotes
- F1, F2, F3, F4, F5
SHC
transaction
Common Stock, $0.01 par value per share ("Common Stock")
Sale
- Transaction value
- $289,753,576
- Shares
- -19,102,952
- Change %
- -100%
- Price
- $15.17
- Shares after
- 0
- Date
- 13 May 2026
- Ownership
- See Footnote
- Footnotes
- F1, F2, F3, F4, F5
SHC
transaction
Common Stock, $0.01 par value per share ("Common Stock")
Sale
- Transaction value
- $289,753,576
- Shares
- -19,102,952
- Change %
- -100%
- Price
- $15.17
- Shares after
- 0
- Date
- 13 May 2026
- Ownership
- See Footnote
- Footnotes
- F1, F2, F3, F4, F5
SHC
transaction
Common Stock, $0.01 par value per share ("Common Stock")
Sale
- Transaction value
- $289,753,576
- Shares
- -19,102,952
- Change %
- -100%
- Price
- $15.17
- Shares after
- 0
- Date
- 13 May 2026
- Ownership
- See Footnote
- Footnotes
- F1, F2, F3, F4, F5
SHC
transaction
Common Stock, $0.01 par value per share ("Common Stock")
Sale
- Transaction value
- $289,753,576
- Shares
- -19,102,952
- Change %
- -100%
- Price
- $15.17
- Shares after
- 0
- Date
- 13 May 2026
- Ownership
- See Footnote
- Footnotes
- F1, F2, F3, F4, F5
SHC
transaction
Common Stock, $0.01 par value per share ("Common Stock")
Sale
- Transaction value
- $289,753,576
- Shares
- -19,102,952
- Change %
- -100%
- Price
- $15.17
- Shares after
- 0
- Date
- 13 May 2026
- Ownership
- See Footnote
- Footnotes
- F1, F2, F3, F4, F5
SHC
transaction
Common Stock, $0.01 par value per share ("Common Stock")
Sale
- Transaction value
- $289,753,576
- Shares
- -19,102,952
- Change %
- -100%
- Price
- $15.17
- Shares after
- 0
- Date
- 13 May 2026
- Ownership
- See Footnote
- Footnotes
- F1, F2, F3, F4, F5
SHC
transaction
Common Stock, $0.01 par value per share ("Common Stock")
Sale
- Transaction value
- $289,753,576
- Shares
- -19,102,952
- Change %
- -100%
- Price
- $15.17
- Shares after
- 0
- Date
- 13 May 2026
- Ownership
- See Footnote
- Footnotes
- F1, F2, F3, F4, F5
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Section 16 status
WARBURG PINCUS & CO. is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.
Explanation of responses 5 footnotes
Footnote F1
On May 13, 2026, certain of the Warburg Pincus Entities (as defined below) sold a total of 19,102,952 shares of Common Stock of Sotera Health Company (the "Issuer") in an underwritten public secondary offering (the "Offering").
Footnote F2
Warburg Pincus XI, L.P., a Delaware limited partnership ("WP XI GP"), is the general partner of each of (i) Warburg Pincus Private Equity XI, L.P. ("WP XI"), (ii) Warburg Pincus Private Equity XI-B, L.P. ("WP XI-B"), (iii) WP XI Partners, L.P. ("WP XI Partners") and (iv) Warburg Pincus XI Partners, L.P. ("Warburg Pincus XI Partners"). WP Global LLC ("WP Global"), is the general partner of WP XI GP. Warburg Pincus Partners II, L.P. ("WPP II"), is the managing member of WP Global. Warburg Pincus Partners GP LLC ("WPP GP LLC"), is the general partner of WPP II. Warburg Pincus & Co. ("WP"), is the managing member of WPP GP LLC. Warburg Pincus (Cayman) XI, L.P. ("WP XI Cayman GP"), is the general partner of Warburg Pincus Private Equity XI-C, L.P. ("WP XI-C" and, together with WP XI, WP XI-B, WP XI Partners and Warburg Pincus XI Partners, the "WP XI Funds").
Footnote F3
The WP XI Funds, Bull Co-Invest L.P. ("Bull Co-Invest"), Bull Holdco L.P. ("Bull Holdco"), WP Global, WPP II, WPP GP LLC, WP XI Cayman GP, WP XI-C LLC, WPP II Cayman, WP Bermuda GP, WP Bull Manager, WP LLC and WP are collectively referred to herein as the "Warburg Pincus Entities.
Footnote F4
Each Warburg Pincus Entity disclaims beneficial ownership with respect to any shares of Common Stock of the Issuer, except to the extent of its pecuniary interest in such shares of Common Stock, if any. The WP XI Funds, Bull Co-Invest, Bull Holdco, WP Global, WPP II, WPP GP LLC, WP XI Cayman GP, WP XI-C LLC, WPP II Cayman, WP Bermuda GP, WP Bull Manager, WP LLC and WP are directors-by-deputization solely for purposes of Section 16 of the Securities Exchange Act of 1934, as amended. Information with respect to each of the Warburg Pincus Entities is given solely by such Warburg Pincus Entity, and no Warburg Pincus Entity has responsibility for the accuracy or completeness of information supplied by another Warburg Pincus Entity.
Footnote F5
Warburg Pincus XI-C, LLC ("WP XI-C LLC"), is the general partner of WP XI Cayman GP. Warburg Pincus Partners II (Cayman), L.P. ("WPP II Cayman"), is the managing member of WP XI-C LLC. Warburg Pincus (Bermuda) Private Equity GP Ltd. ("WP Bermuda GP"), is the general partner of WPP II Cayman. WP Bull Manager LLC ("WP Bull Manager"), is the general partner of Bull Co-Invest. WP is managing member of WP Bull Manager. Warburg Pincus LLC, a New York limited liability company ("WP LLC"), is the manager of the WP XI Funds. The WP XI Funds share limited partnership ownership in Bull Holdco on a pro rata basis in accordance with their respective numbers of Contributed Shares.
SEC remarks
Form 1 of 2. Two reports are filed that relate to the same transactions. See Form 2 of 2 for additional reporting entities.