Mark D. Tattoli - Dec 31, 2023 Form 4 Insider Report for Core Laboratories Inc. /DE/ (CLB)

Role: SVP, Gen Counsel & Secretary
Signature: /s/ Mark D. Tattoli
Stock symbol: CLB
Transactions as of: Dec 31, 2023
Transactions value $: -$46,870
Form type: 4
Date filed: 1/3/2024, 05:50 PM
Previous filing: Dec 4, 2023
Next filing: Feb 15, 2024

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CLB	Common Stock	Tax liability	-$46.9K	-2.65K	-20.27%	$17.66	10.4K	Dec 31, 2023	Direct
transaction	CLB	Common Stock	Options Exercise	$0	+6.9K	+111.42%	$0.00	13.1K	Dec 31, 2023	Direct
holding	CLB	Common Stock						20	Dec 31, 2023	Custodial account
holding	CLB	Common Stock						1.69K	Dec 31, 2023	401 (k) Plan

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	-6.9K	-100%	$0.00^*	0	Dec 29, 2023	Common Stock	6.9K	$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 2021, as disclosed in the Reporting Person's Form 4A filing on October 6, 2021. All requirements for 100% vesting have been met and thus the restricted shares vested on December 31, 2023 at the conclusion of the performance period.