Clean Harbors, headquartered in Norwell, Massachusetts, employs over 21,000 people and provides environmental, energy, and industrial services, including hazardous waste disposal and oil recycling. Its Safety-Kleen Sustainability Solutions segment offers recycled oil products and lubricants.
John R Welch sold 1,250 shares of CLH on 28 May at $228.51 per share, worth a total of $286K. They now own 11,402 CLH shares, or a 10% holding decrease.
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