Info
Insider Ownership

Insider Trading & Ownership of William F. Masterson III

Location: Boston, MA
Summary: The estimated net worth of William F. Masterson III is at least $436K dollars as of December 5, 2025. William F. Masterson III is the Senior Vice President of CABOT CORP and owns shares of CABOT CORP (CBT) stock worth about $436K.
Signature: By: Jennifer Lombardi, pursuant to a power of attorney from William F. Masterson, III
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Ownership of William F. Masterson III

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
CBT	CABOT CORP	Senior Vice President	$436K			Dec 3, 2025

Insider Transactions Reported by William F. Masterson III:

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.