On September 17, 2026, Clean Harbors, Inc. (NYSE: CLH) announced the commencement of a private offering of $600 million in senior notes due 2034. The notes are being offered to qualified institutional buyers in the United States under Rule 144A and to non-U.S. persons outside the United States under Regulation S.
The company stated that the net proceeds from the offering will be used to finance the purchase price of its previously announced acquisition of EnviroServe, a national provider of environmental and waste management services. The remainder of the net proceeds is intended to repay borrowings under its revolving credit facility that were used to partially finance the purchase price of its previously announced acquisition of ES&H.
According to the filing, the consummation of the notes offering is not contingent on the completion of these acquisitions. If either acquisition is not completed, the company intends to use the remaining net proceeds for general corporate purposes. The notes will not be registered under the Securities Act of 1933 and may not be offered or sold in the United States absent registration or an applicable exemption.
