CLB

Core Laboratories Inc. /DE/

Superinvestors

Institutional investors holding CLB

Investor	Fund	Weight	Shares	Value	Quarter
William Von Mueffling	Cantillon Capital Management	3.27%	745,323	$102.8M	2013Q1
Ariel Investments	Ariel Investments (Bobrinskoy & Rogers)	2.48%	13,170,388	$221.1M	2026Q1
AKO Capital	AKO Capital	0.60%	1,365,005	$53.2M	2021Q2
Meridian / ArrowMark	Meridian Contrarian Fund	0.05%	50,000	$5.8M	2018Q3
FPA / Steven Romick	FPA Crescent Fund – First Pacific Advisors	0.04%	29,600	$1.9M	2006Q3
Polen Capital Management	Polen Capital Management	0.01%	3,094	$524K	2013Q3
Kenneth Fisher	Fisher Asset Management	0.00%	736,747	$12.4M	2026Q1
Mairs & Power	Mairs & Power Growth Fund	0.00%	8,685	$275K	2022Q1

Congressional Activity

Congressional data coming soon

Insider Activity

14

Total trades

$1K

Volume

6

Buys

1

Sells

Last trade: May 1, 2026

Insider Tradeslast 90 days

Date	Insider	Type	Value
May 1, 2026	Mark Damian Tattoli	Sell	$1K
May 1, 2026	Mark Damian Tattoli	Option	–

Congressional Tradeslast 90 days

Congressional trade data is being sourced and will appear here shortly.