Insider Trading & Ownership of Joseph P. Platt JR

Location: Pittsburgh, PA
Summary: The estimated net worth of Joseph P. Platt JR is at least $6.64M dollars as of 19 Nov 2025. Joseph P. Platt JR is the Director of Core Natural Resources, Inc. and owns shares of Core Natural Resources, Inc. (CNR) stock worth about $3.98M. Joseph P. Platt JR is the Director of GREENLIGHT CAPITAL RE, LTD. and owns shares of GREENLIGHT CAPITAL RE, LTD. (GLRE) stock worth about $2.66M.
Signature: /s/ Sherry Diaz, as attorney in fact
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Ownership of Joseph P. Platt JR

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
CNR	Core Natural Resources, Inc.	Director	$3.98M			18 Feb 2025
GLRE	GREENLIGHT CAPITAL RE, LTD.	Director	$2.66M	+$64.9K	+2.5%	18 Nov 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.