Form 4: Clean Harbors Executive Chairman Reports Routine Stock Sale for Tax Obligations

Clean Harbors' Executive Chairman and CTO, Alan S. McKim, reported the disposition of 1,342 shares of common stock to cover tax liabilities related to the vesting of securities.

Summary

• Alan S. McKim, Executive Chairman, CTO, and Director of Clean Harbors, Inc. (CLH), reported a transaction on July 1, 2025.
• The transaction involved the disposition of 1,342 shares of Clean Harbors Common Stock at a price of $229.55 per share.
• This disposition was coded as 'F', indicating payment of tax liability by withholding of securities incident to the vesting of securities, in accordance with Rule 16b3.
• Following this transaction, Alan S. McKim directly beneficially owns 34,027 shares of Common Stock.
• Indirect beneficial ownership includes 2,297,896 shares through the McKim 2007 Trust, 57,415 shares through the McKim 2024 Annuity Trust, and 100,000 shares through the McKim 2025 Annuity Trust, totaling 2,455,311 indirect shares.

Sentiment

Score: 5

Explanation: The transaction reported is a routine disposition of shares by an executive to cover tax obligations upon the vesting of securities, which is a common and expected event and does not reflect a change in company fundamentals or executive confidence.

Positives

• The reported transaction is a non-discretionary sale for tax purposes, which is a common and expected event in executive compensation and does not signal a lack of confidence in the company by the executive.

Negatives

• The transaction results in a minor reduction of Alan S. McKim's direct beneficial ownership, though his overall indirect holdings remain substantial.

Risks

• No specific new risks are introduced by this routine tax-related stock disposition.

Future Outlook

The document, a Form 4, reports a past insider transaction and does not contain any forward-looking statements or guidance regarding the company's future performance or strategic outlook.

Industry Context

This Form 4 filing details a routine insider transaction specific to an executive's compensation and tax obligations, and as such, it does not provide insights into broader industry trends or competitive dynamics within the environmental and industrial services sector.

Related Party Transactions

• Alan S. McKim's indirect beneficial ownership includes shares held through the McKim 2007 Trust, McKim 2024 Annuity Trust, and McKim 2025 Annuity Trust.

Stakeholder Impact

• Shareholders may observe a minor reduction in direct insider ownership, but the transaction's nature (tax-related) suggests no negative implications for company strategy or performance.
• Employees, customers, suppliers, and creditors are unlikely to be directly impacted by this routine executive stock transaction.

Key Dates

Recommendation

Keywords

Clean Harbors, CLH, Form 4, insider transaction, executive compensation, stock sale, Alan S. McKim, tax withholding, beneficial ownership