Core Laboratories (NYSE: CLB) SVP reports vested performance share award

Rhea-AI Filing Summary

Core Laboratories Inc. reported an insider equity transaction by its Senior Vice President, General Counsel & Secretary on December 31, 2025. A previously granted performance-based restricted share award vested at 116.5% of the target level, resulting in the delivery of 24,952 shares of common stock after the company finished in the 68th percentile for return on invested capital versus its Bloomberg Peer Group for the performance period ending December 31, 2025.

On the same date, 14,310 shares of common stock at a price of $16.03 were withheld or disposed of in a transaction coded "F", typically associated with tax withholding, and the reporting person’s directly held common stock position increased to 41,670.621 shares, with additional small indirect holdings through a custodial account and a 401(k) plan.

Insider Trade Summary

Net Buyer: 10,642 shares

Net Buy 5 txns

Insider Tattoli Mark Damian

Role SVP, Gen Counsel & Secretary

Type	Security	Shares	Price	Value
Exercise	Performance Shares	24,952	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	14,310	$16.03	$229K
Exercise	Common Stock	24,952	$0.00	$0.00
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Performance Shares — 0 shares (Direct); Common Stock — 41,670.621 shares (Direct); Common Stock — 20 shares (Indirect, Custodial account); Common Stock — 1,694.842 shares (Indirect, 401 (k) Plan)

Footnotes (1)

1. F1. These shares were awarded as restricted performance shares in February 2023, as disclosed in the Reporting Person's Form 4 filing on February 21, 2023. The Company finished in the 68th percentile of return on invested capital among the Bloomberg Peer Group at the conclusion of the performance period on December 31, 2025. Therefore, the performance criteria and requirements for vesting have been satisfied at 116.5% of the target award level, and such number of shares vested on December 31, 2025.

FAQ

What insider transaction did Core Laboratories (CLB) report in this Form 4?

The filing reports that the SVP, General Counsel & Secretary had a performance-based restricted share award vest on December 31, 2025, resulting in the acquisition of 24,952 shares of Core Laboratories common stock and related share withholding coded as an "F" transaction.

How many Core Laboratories (CLB) performance shares vested for the insider?

The insider had 24,952 performance shares vest, which were originally granted as restricted performance shares in February 2023 and settled into an equivalent number of Core Laboratories common shares.

What performance criteria triggered the vesting of Core Laboratories (CLB) performance shares?

Vesting was based on Core Laboratories’ return on invested capital relative to a Bloomberg Peer Group. The company finished in the 68th percentile at the end of the performance period on December 31, 2025, resulting in vesting at 116.5% of the target award level.

How many Core Laboratories (CLB) shares were disposed of or withheld in the reported transaction?

The filing shows 14,310 shares of common stock with transaction code "F" at a price of $16.03, which typically reflects shares withheld or disposed of to cover tax obligations associated with the vesting.

How many Core Laboratories (CLB) shares does the insider own after the transaction?

After the reported transactions, the insider beneficially owns 41,670.621 shares of Core Laboratories common stock directly, plus 20 shares in a custodial account and 1,694.842 shares through a 401(k) Plan as indirect holdings.

What happened to the derivative performance share award for the Core Laboratories (CLB) insider?

The filing shows performance shares as a derivative security with an exercise price of $0, transaction code "M" on December 31, 2025, and 24,952 underlying common shares. Following this transaction, the number of derivative performance shares beneficially owned is reported as 0, indicating they were fully settled into common stock.

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 01/05/2026 - 03:18 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Tattoli Mark Damian

(Last) (First) (Middle)

6316 WINDFERN ROAD

(Street)

HOUSTON TX 77040

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Core Laboratories Inc. /DE/ [ CLB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP, Gen Counsel & Secretary

3. Date of Earliest Transaction (Month/Day/Year)
12/31/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	12/31/2025		F		14,310	D	$16.03	27,360.621	D
Common Stock	12/31/2025		M		24,952	A	$0	41,670.621	D
Common Stock								20	I	Custodial account
Common Stock								1,694.842	I	401 (k) Plan

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Performance Shares	$0	12/31/2025		M			24,952	(1)	(1)	Common Stock	24,952	$0	0	D

Explanation of Responses:

1. These shares were awarded as restricted performance shares in February 2023, as disclosed in the Reporting Person's Form 4 filing on February 21, 2023. The Company finished in the 68th percentile of return on invested capital among the Bloomberg Peer Group at the conclusion of the performance period on December 31, 2025. Therefore, the performance criteria and requirements for vesting have been satisfied at 116.5% of the target award level, and such number of shares vested on December 31, 2025.

	/s/ Mark D. Tattoli	01/05/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.