(CLB)

Role: Chairman and CEO, Director
Signature: /s/ Mark Tattoli, Attorney-in-Fact
Stock symbol: CLB
Transactions as of: Dec 31, 2023
Transactions value $: -$679,433
Form type: 4
Date filed: 1/3/2024, 05:40 PM
Previous filing: Feb 21, 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	-$679K	-38.5K	-18.99%	$17.66	164K	Dec 31, 2023	Direct
transaction	CLB	Common Stock	Options Exercise	$0	+100K	+97.6%	$0.00	203K	Dec 31, 2023	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	-100K	-100%	$0.00^*	0	Dec 31, 2023	Common Stock	100K	$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 4 filing on February 19, 2021. The Company finished in the 81st percentile of return on invested capital among the Bloomberg Peer Group at the conclusion of the performance period on December 31, 2023. Excess shares that could vest above the 75th percentile are subject to an absolute total shareholder return modifier, which was negative over the relevant performance period, thereby reducing the number of such shares eligible to vest by one-half. Therefore, the performance criteria and requirements for vesting have been satisfied at 106.25% of the target award level, and such number of shares vested on December 31, 2023.

Content

These shares were awarded as restricted performance shares in February 2021, as disclosed in the Reporting Person's Form 4 filing on February 19, 2021. The Company finished in the 81st percentile of return on invested capital among the Bloomberg Peer Group at the conclusion of the performance period on December 31, 2023. Excess shares that could vest above the 75th percentile are subject to an absolute total shareholder return modifier, which was negative over the relevant performance period, thereby reducing the number of such shares eligible to vest by one-half. Therefore, the performance criteria and requirements for vesting have been satisfied at 106.25% of the target award level, and such number of shares vested on December 31, 2023.