SCHEDULE 13G/A: Wellington Management Group Discloses 10.85% Passive Stake in Clean Harbors, Inc.

Wellington Management Group LLP and its affiliates have filed an amended Schedule 13G, reporting a passive beneficial ownership of 10.85% in Clean Harbors, Inc. common stock.

Summary

• Wellington Management Group LLP and its affiliated entities (Wellington Group Holdings LLP, Wellington Investment Advisors Holdings LLP, and Wellington Management Company LLP) have filed an Amendment No. 14 to Schedule 13G.
• The filing reports their beneficial ownership of Clean Harbors, Inc. common stock, with the event requiring the filing occurring on April 30, 2025.
• As of April 30, 2025, the aggregate amount beneficially owned by the reporting persons is 5,813,435 shares.
• This represents 10.85% of the class of Clean Harbors, Inc. common stock.
• The reporting persons hold 4,870,335 shares with shared voting power and 5,813,435 shares with shared dispositive power.
• The filing indicates a passive investment, with the securities held in the ordinary course of business and not for the purpose of changing or influencing control of the issuer.
• Wellington Management Group LLP, as the parent holding company, controls various investment advisers whose clients are the record owners of these securities.

Sentiment

Score: 5

Explanation: The document is a factual disclosure of beneficial ownership and does not contain information that would significantly alter sentiment. It confirms a large, passive institutional holding.

Positives

• A significant institutional investor, Wellington Management Group, holds a substantial stake (10.85%) in Clean Harbors, Inc., indicating confidence in the company.
• The filing confirms a passive investment strategy, suggesting stability in the ownership structure without intentions to influence control.

Future Outlook

NA

Industry Context

NA

Stakeholder Impact

• Shareholders: Provides transparency regarding a significant institutional shareholder's passive stake, potentially offering a degree of stability.

Next Steps

• Wellington Management Group and its affiliates will continue to file amendments to Schedule 13G as required by changes in their beneficial ownership of Clean Harbors, Inc. common stock.

Key Dates

Keywords

Clean Harbors Inc, Wellington Management Group, Schedule 13G, Beneficial Ownership, Institutional Investment, Common Stock, Environmental Services, Waste Management