(CLB)

Role: Chairman and CEO, Director
Signature: /s/ Mark Tattoli, Attorney-in-Fact
Stock symbol: CLB
Transactions as of: Dec 31, 2023
Transactions value $: -$695,327
Form type: 4/A
Date filed: 1/8/2024, 02:41 PM
Date Of Original Report: Jan 3, 2024
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	-$695K	-39.4K	-19.44%	$17.66	163K	Dec 31, 2023	Direct	F1

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

Explanation of Responses:

Id	Content
F1	The original Form 4, filed on January 3, 2024, is being amended by this Form 4 amendment to correct an administrative error of the issuer, whereupon the number of shares withheld to satisfy tax withholding obligations upon vesting of certain restricted performance shares was misreported as 38,473 shares. The corrected transaction reflects an increase of 900 shares withheld by the issuer as a result such vesting and a corresponding reduction in the number of shares beneficially owned by the reporting person.

Content

The original Form 4, filed on January 3, 2024, is being amended by this Form 4 amendment to correct an administrative error of the issuer, whereupon the number of shares withheld to satisfy tax withholding obligations upon vesting of certain restricted performance shares was misreported as 38,473 shares. The corrected transaction reflects an increase of 900 shares withheld by the issuer as a result such vesting and a corresponding reduction in the number of shares beneficially owned by the reporting person.