Insider Trading & Ownership of Melkeya McDuffie

Location: C/O Clean Harbors Inc., 42 Longwater Drive, Norwell, MA
Summary: The estimated net worth of Melkeya McDuffie is at least $2.12M dollars as of October 2, 2025. Melkeya McDuffie is the EVP, HUMAN RESOURCES OFFICER of CLEAN HARBORS INC and owns shares of CLEAN HARBORS INC (CLH) stock worth about $1.8M. Melkeya McDuffie is the Director of TREX CO INC and owns shares of TREX CO INC (TREX) stock worth about $190K. Melkeya McDuffie is the Senior VP, Human Resources of GROUP 1 AUTOMOTIVE INC and owns shares of GROUP 1 AUTOMOTIVE INC (GPI) stock worth about $125K.
Signature: /s/ Amy M. Fernandez by power of attorney
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Ownership of Melkeya McDuffie

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
CLH	CLEAN HARBORS INC	Evp, Human Resources Officer	$1.8M			May 24, 2023
TREX	TREX CO INC	Director	$190K	-$87.9K	-31.7%	Oct 1, 2025
GPI	GROUP 1 AUTOMOTIVE INC	Senior VP, Human Resources	$125K			Aug 11, 2025

Sym	Company	Class	Transaction	%	Value $	* Price $	Shares	Shares After	Date	Ownership

* An asterisk sign (*) next to the price indicates that the price is likely invalid.