Mark D. Tattoli - Oct 1, 2025 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
Oct 1, 2025
Transactions value $
-$3,472
Form type
4
Date filed
10/2/2025, 05:16 PM
Previous filing
Aug 5, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Tattoli Mark Damian SVP, Gen Counsel & Secretary 6316 WINDFERN ROAD, HOUSTON /s/ Mark D. Tattoli 2025-10-02 0001872069

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CLB Common Stock Tax liability -$3.47K -276 -1.62% $12.58 16.7K Oct 1, 2025 Direct
transaction CLB Common Stock Options Exercise $0 +700 +4.3% $0.00 17K Oct 1, 2025 Direct
holding CLB Common Stock 20 Oct 1, 2025 Custodial account
holding CLB Common Stock 1.69K Oct 1, 2025 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 Restricted Shares Options Exercise $0 -700 -32.56% $0.00 1.45K Oct 1, 2025 Common Stock 700 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The Restricted Shares vest annually over six years on the anniversary of the grant date in the amount specified in the award agreement, provided the reporting person remains in continuous service on each such vesting date.
F2 Multiple restricted share grants are included in this total.