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Core Laboratories Inc. (CLB)

Core Laboratories Inc. (CLB) Insider Trading

Directors, officers and holders of more than 10% of CLB report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 50 most recent of 125 transactions on file: 1 with code P, 0 with code S and 49 with other codes.

DateInsiderCodeShares
Oct 1, 2026Tattoli Mark DamianM Exercise700
Oct 1, 2026Tattoli Mark DamianM Exercise700
Oct 1, 2026Teo Sow HangF Tax Payment99
Oct 1, 2026Teo Sow HangM Exercise250
Oct 1, 2026Teo Sow HangM Exercise250
Oct 1, 2026Tattoli Mark DamianF Tax Payment276
Aug 1, 2026Teo Sow HangM Exercise200
Aug 1, 2026Teo Sow HangM Exercise240
Aug 1, 2026Teo Sow HangM Exercise240
Aug 1, 2026Teo Sow HangF Tax Payment90
Aug 1, 2026Tattoli Mark DamianM Exercise250
Aug 1, 2026Teo Sow HangM Exercise200
Aug 1, 2026Tattoli Mark DamianM Exercise250
Aug 1, 2026Teo Sow HangF Tax Payment108
Aug 1, 2026Tattoli Mark DamianF Tax Payment99
Jul 31, 2026Bruno LawrenceP Purchase5,000
May 1, 2026Tattoli Mark DamianF Tax Payment97
May 1, 2026Tattoli Mark DamianM Exercise250
May 1, 2026Tattoli Mark DamianM Exercise250
Apr 1, 2026Temeng KwakuM Exercise8,069
Apr 1, 2026Klingensmith Harvey RobertM Exercise8,069
Apr 1, 2026Carnes Martha Z.A Award7,895
Apr 1, 2026Murray KatherineM Exercise8,069
Apr 1, 2026MARTINOVICH ROBERT FM Exercise8,069
Apr 1, 2026Temeng KwakuM Exercise8,069
Apr 1, 2026ANASTASIO CURTM Exercise8,069
Apr 1, 2026Carnes Martha Z.M Exercise8,069
Apr 1, 2026Klingensmith Harvey RobertM Exercise8,069
Apr 1, 2026MARTINOVICH ROBERT FA Award7,895
Apr 1, 2026MARTINOVICH ROBERT FM Exercise8,069
Apr 1, 2026Carnes Martha Z.M Exercise8,069
Apr 1, 2026Murray KatherineA Award7,895
Apr 1, 2026Temeng KwakuA Award7,895
Apr 1, 2026ANASTASIO CURTA Award7,895
Apr 1, 2026Klingensmith Harvey RobertA Award7,895
Apr 1, 2026ANASTASIO CURTM Exercise8,069
Apr 1, 2026Murray KatherineM Exercise8,069
Feb 12, 2026Bruno LawrenceA Award204,340
Feb 12, 2026Gresham GwendolynA Award33,490
Feb 12, 2026Tattoli Mark DamianA Award33,490
Feb 12, 2026Teo Sow HangA Award7,526
Feb 12, 2026Hill Christopher ScottA Award70,008
Dec 31, 2025Hill Christopher ScottM Exercise61,417
Dec 31, 2025Tattoli Mark DamianF Tax Payment14,310
Dec 31, 2025Bruno LawrenceM Exercise180,722
Dec 31, 2025Gresham GwendolynM Exercise24,952
Dec 31, 2025Bruno LawrenceM Exercise180,722
Dec 31, 2025Bruno LawrenceF Tax Payment112,681
Dec 31, 2025Hill Christopher ScottM Exercise61,417
Dec 31, 2025Hill Christopher ScottF Tax Payment32,152

The full Form 4 history is on the CLB company page (Insider Trades card, View all).

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.