Insider Trading & Ownership of Argos SEM, LLC

Location: Medellin, Colombia
Summary: The estimated value of insider holdings of Argos SEM, LLC is at least $1,751,040,000 dollars as of 22 Jan 2024. Argos SEM, LLC is the Director, 10%+ Owner of Summit Materials, Inc. and owns shares of Summit Materials, Inc. stock worth about $1.75B.
Signature: /s/ Grupo Argos S.A., By: Rafael Olivella, Title: Vice President
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Ownership of Argos SEM, LLC

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
SUM	Summit Materials, Inc.	Director, 10%+ Owner	$1,751,040,000			12 Jan 2024