Gwendolyn Gresham - Dec 31, 2022 Form 4 Insider Report for CORE LABORATORIES N V (CLB)

Role: SVP
Signature: /s/ Mark Tattoli, Attorney-in-Fact
Stock symbol: CLB
Transactions as of: Dec 31, 2022
Transactions value $: $95,715
Form type: 4
Date filed: 1/4/2023, 04:02 PM
Previous filing: Feb 17, 2022
Next filing: Feb 21, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CLB	Common Shares	Tax liability	$95.7K	+4.72K	+45.67%	$20.27^*	15.1K	Dec 31, 2022	Direct
transaction	CLB	Common Shares	Options Exercise	$0	-12K	-37.76%	$0.00	19.8K	Dec 31, 2022	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	CLB	Performance Shares	Options Exercise	$0	-12K	-100%	$0.00^*	0	Dec 31, 2022	Common Shares	12K	$0.00	Direct	F1

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

Explanation of Responses:

Id	Content
F1	These shares were awarded as restricted performance shares in February 2020, subject to a three-year performance period that began on January 1, 2020 and ended on December 31, 2022. All requirements for 100% vesting have been met and thus the restricted shares vested on December 31, 2022 at the conclusion of the performance period.