SCHEDULE: Warburg Pincus Group Discloses 25.7% Stake in Sotera Health

Warburg Pincus and GTCR collectively report beneficial ownership of 25.7% of Sotera Health Co. common stock, totaling 73,038,253 shares.

Summary

• Warburg Pincus Reporting Persons, along with GTCR Investors, collectively beneficially own 73,038,253 shares of Sotera Health Co. common stock.
• This aggregate ownership represents approximately 25.7% of the total outstanding shares of Sotera Health Co.
• The calculation is based on 284,093,929 shares outstanding as of October 28, 2025.
• Warburg Pincus Reporting Persons have shared voting power over all 73,038,253 shares.
• Warburg Pincus Reporting Persons have shared dispositive power over 43,822,952 shares.
• GTCR Investors are publicly reported to own 29,215,301 shares, which are included in the aggregate beneficial ownership.
• A Stockholders Agreement, dated November 19, 2020, governs certain arrangements between Warburg Pincus Sponsors, GTCR Funds, and other investors, including voting on director elections, transfer restrictions, and indemnification.
• Warburg Pincus Reporting Persons explicitly disclaim beneficial ownership and dispositive power over shares held by GTCR Investors, except as specified in the Stockholders Agreement.

Sentiment

Score: 6

Explanation: The filing is a routine disclosure of beneficial ownership by a major institutional investor group. It confirms a substantial, long-standing stake and a governance agreement, which can be viewed as a sign of commitment, but it does not contain new financial or operational information to significantly alter sentiment.

Positives

• Significant institutional backing from Warburg Pincus and GTCR, indicating strong investor confidence.
• The existence of a Stockholders Agreement suggests a structured approach to corporate governance and alignment of interests among major shareholders.

Risks

• Potential for conflicts of interest between different investor groups (Warburg Pincus, GTCR, and other investors) despite the Stockholders Agreement.
• Concentrated ownership by these private equity firms could influence strategic decisions in ways that may not always align with public minority shareholders.

Future Outlook

NA

Industry Context

Large institutional holdings by private equity firms like Warburg Pincus and GTCR are common in companies that have recently gone public or have a history of private equity backing. Such significant ownership can provide stability but also raise questions about long-term strategic direction and potential future exits, which could impact market liquidity and share price.

Corporate Governance

Related Party Transactions

• The Stockholders Agreement between Warburg Pincus Sponsors, GTCR Funds, and other holders of Common Stock can be considered a related party arrangement, as it governs voting and transfer rights among significant shareholders.

Stakeholder Impact

• Shareholders: The significant combined ownership by Warburg Pincus and GTCR (25.7%) means these entities have substantial influence over corporate decisions, particularly board elections. This could lead to more stable long-term strategic planning but also potentially limit the influence of smaller shareholders.
• Management: Management will need to consider the interests and voting power of these large institutional investors in strategic and governance matters.

Key Dates

Recommendation

This filing is a routine update on beneficial ownership by a major institutional group. It does not contain new financial performance data, strategic shifts, or material events that would warrant a change in investment recommendation. The continued significant stake by Warburg Pincus and GTCR indicates ongoing institutional confidence, but without further operational or financial news, a "hold" recommendation is appropriate for existing investors.

Keywords

Sotera Health Co, Warburg Pincus, GTCR, Schedule 13G, Beneficial Ownership, Common Stock, Institutional Investor, Private Equity, Stockholders Agreement, SEC Filing, Ownership Disclosure