Eric W. Gerstenberg, Co-Chief Executive Officer of Clean Harbors Inc., filed an amended statement of changes in beneficial ownership on August 14, 2026, reporting a share withholding transaction dated July 1, 2026, and a correction to his total shares held.

Key Highlights

  • Reporting person: Eric W. Gerstenberg, identified as Co-CEO of Clean Harbors Inc. (NYSE:CLH)
  • Transaction date: July 1, 2026, with the original filing dated July 6, 2026
  • Shares withheld: 564 shares of Common Stock disposed of (code F) at $290.74 per share
  • Withholding purpose: Payment of tax liability incident to vesting of securities, per Rule 16b-3
  • Corrected share total: 59,293 shares of Common Stock beneficially owned directly following the reported transaction
  • Amendment reason: The filing notes a correction to the total number of shares held

Gerstenberg Share Withholding and Ownership Correction at Clean Harbors

According to the amended filing, Gerstenberg's July 1, 2026 transaction involved the withholding of 564 shares of Clean Harbors Common Stock at a price of $290.74 per share. The filing describes this as "payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3," meaning the shares were not sold on the open market but were surrendered to cover tax obligations triggered by a vesting event. Clean Harbors, headquartered in Norwell, Massachusetts, provides environmental and industrial services across North America, with Gerstenberg serving in the role of Co-CEO.

The amendment, signed by Gerstenberg on August 14, 2026, also discloses a correction to the total number of shares held. Following the reported transaction, the filing states that Gerstenberg directly holds 59,293 shares of Common Stock. No derivative securities transactions were reported in Table II of the filing. The original statement was filed on July 6, 2026, covering the earliest transaction date of July 1, 2026.

What Was Disclosed

The amended filing reported a tax-related withholding of 564 shares of Clean Harbors Common Stock by Co-CEO Eric W. Gerstenberg at $290.74 per share on July 1, 2026, and corrected his total directly held shares to 59,293.