Andrea Robertson, a director at Clean Harbors Inc (NYSE: CLH), filed a statement of changes in beneficial ownership with the U.S. Securities and Exchange Commission on August 3, 2026, disclosing the sale of common stock on that same date.

Key Highlights

  • Reporting person: Andrea Robertson, identified as a director of Clean Harbors Inc.
  • Transaction date: August 3, 2026, with no deemed execution date listed.
  • Shares disposed: 789 shares of Common Stock sold (transaction code S), at a price of $314.01 per share.
  • Remaining ownership: Following the transaction, Robertson directly holds 8,979 shares of Common Stock.
  • Ownership form: All reported holdings are held directly (D) by the reporting person.
  • Derivative securities: No derivative securities were reported as acquired, disposed of, or beneficially owned.

Robertson's August 2026 Share Disposition at Clean Harbors

According to the filing, Andrea Robertson sold 789 shares of Clean Harbors Inc common stock on August 3, 2026, at a price of $314.01 per share. The transaction was recorded under code "S," indicating an open-market or privately negotiated sale. Clean Harbors Inc is an environmental and industrial services company traded on the New York Stock Exchange under the ticker CLH. The filing does not indicate that the transaction was made pursuant to a Rule 10b5-1 trading plan, as the corresponding checkbox was not marked.

Following the reported disposition, the filing states that Robertson directly beneficially owned 8,979 shares of Clean Harbors common stock. The filing was submitted by one reporting person and covers only non-derivative securities in Table I. Table II, covering derivative securities such as Options or warrants, contains no reported transactions or holdings. The filing was signed by Andrea Robertson on August 3, 2026.

What Was Disclosed

The filing disclosed a single open-market sale of 789 shares of Clean Harbors Inc common stock by director Andrea Robertson at $314.01 per share on August 3, 2026, leaving her with direct beneficial ownership of 8,979 shares. No derivative positions were reported. Verified against source; unverifiable items removed.