NYSE · CIK 0001958086
CLB Core Laboratories Inc. /DE/
Insider trading from SEC Form 4. Last filing 8 d ago.
Core Laboratories Inc. /DE/ (CLB) has 41 SEC Form 4 filings on file from 11 insiders, the latest filed on Oct 5, 2026. No insider bought or sold on the open market in the last 90 days; rows filed in that time are grants, exercises, tax withholding and other transactions that carry no view on the price.
Last 90 days
Signals
Open-market buys and sells at Core Laboratories Inc. /DE/, scored.
Transactions
The newest 50 of 109 rows filed, every code.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Oct 1, 2026 | Sow Hang Teo CAO & Treasurer | FTax withholding Common Stock | -99 | $9.76 | $966 | 8,818 | 8 d ago |
| Oct 1, 2026 | Mark Damian Tattoli SVP, Gen Counsel & Secretary | FTax withholding Common Stock | -276 | $9.76 | $2,694 | 28,089 | 8 d ago |
| Oct 1, 2026 | Mark Damian Tattoli SVP, Gen Counsel & Secretary | MOption exercise Common Stock | +700 | $0.00 | $0 | 28,365 | 8 d ago |
| Oct 1, 2026 | Sow Hang Teo CAO & Treasurer | MOption exercise Common Stock | +250 | $0.00 | $0 | 8,917 | 8 d ago |
| Oct 1, 2026 | Sow Hang Teo CAO & Treasurer | MOption exercise Restricted Sharesderivative | -250 | $0.00 | $0 | 6,000 | 8 d ago |
| Oct 1, 2026 | Mark Damian Tattoli SVP, Gen Counsel & Secretary | MOption exercise Restricted Sharesderivative | -700 | $0.00 | $0 | 250 | 8 d ago |
| May 1, 2026 | Mark Damian Tattoli SVP, Gen Counsel & Secretary | FTax withholding Common Stock | -97 | $14.07 | $1,365 | 27,514 | May 4, 2026 |
| May 1, 2026 | Mark Damian Tattoli SVP, Gen Counsel & Secretary | MOption exercise Common Stock | +250 | $0.00 | $0 | 27,611 | May 4, 2026 |
| May 1, 2026 | Mark Damian Tattoli SVP, Gen Counsel & Secretary | MOption exercise Restricted Sharesderivative | -250 | $0.00 | $0 | 1,200 | May 4, 2026 |
| Apr 1, 2026 | Katherine Murray director | MOption exercise Common Stock | +8,069 | $0.00 | $0 | 29,290 | Apr 8, 2026 |
| Apr 1, 2026 | Katherine Murray director | AGrant or award Restricted Sharesderivative | +7,895 | $0.00 | $0 | 7,895 | Apr 8, 2026 |
| Apr 1, 2026 | Katherine Murray director | MOption exercise Restricted Sharesderivative | -8,069 | $0.00 | $0 | 0 | Apr 8, 2026 |
| Apr 1, 2026 | Harvey Robert Klingensmith director | MOption exercise Common Stock | +8,069 | $0.00 | $0 | 50,031 | Apr 7, 2026 |
| Apr 1, 2026 | Robert F Martinovich director | MOption exercise Common Stock | +8,069 | $0.00 | $0 | 8,069 | Apr 7, 2026 |
| Apr 1, 2026 | Curt Anastasio director | MOption exercise Common Stock | +8,069 | $0.00 | $0 | 23,805 | Apr 7, 2026 |
| Apr 1, 2026 | Kwaku Temeng director | MOption exercise Common Stock | +8,069 | $0.00 | $0 | 33,597 | Apr 7, 2026 |
| Apr 1, 2026 | Martha Z. Carnes director | MOption exercise Common Stock | +8,069 | $0.00 | $0 | 54,397 | Apr 7, 2026 |
| Apr 1, 2026 | Robert F Martinovich director | AGrant or award Restricted Sharesderivative | +7,895 | $0.00 | $0 | 7,895 | Apr 7, 2026 |
| Apr 1, 2026 | Kwaku Temeng director | AGrant or award Restricted Sharesderivative | +7,895 | $0.00 | $0 | 7,895 | Apr 7, 2026 |
| Apr 1, 2026 | Curt Anastasio director | AGrant or award Restricted Sharesderivative | +7,895 | $0.00 | $0 | 7,895 | Apr 7, 2026 |
| Apr 1, 2026 | Harvey Robert Klingensmith director | AGrant or award Restricted Sharesderivative | +7,895 | $0.00 | $0 | 7,895 | Apr 7, 2026 |
| Apr 1, 2026 | Martha Z. Carnes director | AGrant or award Restricted Sharesderivative | +7,895 | $0.00 | $0 | 7,895 | Apr 7, 2026 |
| Apr 1, 2026 | Robert F Martinovich director | MOption exercise Restricted Sharesderivative | -8,069 | $0.00 | $0 | 0 | Apr 7, 2026 |
| Apr 1, 2026 | Kwaku Temeng director | MOption exercise Restricted Sharesderivative | -8,069 | $0.00 | $0 | 0 | Apr 7, 2026 |
| Apr 1, 2026 | Harvey Robert Klingensmith director | MOption exercise Restricted Sharesderivative | -8,069 | $0.00 | $0 | 0 | Apr 7, 2026 |
| Apr 1, 2026 | Curt Anastasio director | MOption exercise Restricted Sharesderivative | -8,069 | $0.00 | $0 | 0 | Apr 7, 2026 |
| Apr 1, 2026 | Martha Z. Carnes director | MOption exercise Restricted Sharesderivative | -8,069 | $0.00 | $0 | 0 | Apr 7, 2026 |
| Feb 12, 2026 | Mark Damian Tattoli SVP, Gen Counsel & Secretary | AGrant or award Performance Sharesderivative | +33,490 | $0.00 | $0 | 33,490 | Feb 17, 2026 |
| Feb 12, 2026 | Lawrence Bruno Chairman and CEO | AGrant or award Performance Sharesderivative | +204,340 | $0.00 | $0 | 204,340 | Feb 17, 2026 |
| Feb 12, 2026 | Sow Hang Teo CAO & Treasurer | AGrant or award Performance Sharesderivative | +7,526 | $0.00 | $0 | 7,526 | Feb 17, 2026 |
| Feb 12, 2026 | Gwendolyn Gresham SVP | AGrant or award Performance Sharesderivative | +33,490 | $0.00 | $0 | 33,490 | Feb 17, 2026 |
| Feb 12, 2026 | Christopher Scott Hill SVP & CFO | AGrant or award Performance Sharesderivative | +70,008 | $0.00 | $0 | 70,008 | Feb 17, 2026 |
| Dec 31, 2025 | Lawrence Bruno Chairman and CEO | FTax withholding Common Stock | -112,681 | $16.03 | $1.8M | 257,438 | Jan 5, 2026 |
| Dec 31, 2025 | Christopher Scott Hill SVP & CFO | FTax withholding Common Stock | -32,152 | $16.03 | $515k | 110,202 | Jan 5, 2026 |
| Dec 31, 2025 | Gwendolyn Gresham SVP | FTax withholding Common Stock | -19,301 | $16.03 | $309k | 33,226 | Jan 5, 2026 |
| Dec 31, 2025 | Mark Damian Tattoli SVP, Gen Counsel & Secretary | FTax withholding Common Stock | -14,310 | $16.03 | $229k | 27,361 | Jan 5, 2026 |
| Dec 31, 2025 | Lawrence Bruno Chairman and CEO | MOption exercise Common Stock | +180,722 | $0.00 | $0 | 370,119 | Jan 5, 2026 |
| Dec 31, 2025 | Christopher Scott Hill SVP & CFO | MOption exercise Common Stock | +61,417 | $0.00 | $0 | 142,354 | Jan 5, 2026 |
| Dec 31, 2025 | Gwendolyn Gresham SVP | MOption exercise Common Stock | +24,952 | $0.00 | $0 | 52,527 | Jan 5, 2026 |
| Dec 31, 2025 | Mark Damian Tattoli SVP, Gen Counsel & Secretary | MOption exercise Common Stock | +24,952 | $0.00 | $0 | 41,671 | Jan 5, 2026 |
| Dec 31, 2025 | Lawrence Bruno Chairman and CEO | MOption exercise Performance Sharesderivative | -180,722 | $0.00 | $0 | 0 | Jan 5, 2026 |
| Dec 31, 2025 | Christopher Scott Hill SVP & CFO | MOption exercise Performance Sharesderivative | -61,417 | $0.00 | $0 | 0 | Jan 5, 2026 |
| Dec 31, 2025 | Gwendolyn Gresham SVP | MOption exercise Performance Sharesderivative | -24,952 | $0.00 | $0 | 0 | Jan 5, 2026 |
| Dec 31, 2025 | Mark Damian Tattoli SVP, Gen Counsel & Secretary | MOption exercise Performance Sharesderivative | -24,952 | $0.00 | $0 | 0 | Jan 5, 2026 |
| Dec 1, 2025 | Sow Hang Teo CAO & Treasurer | FTax withholding Common Stock | -340 | $15.39 | $5,233 | 8,425 | Dec 2, 2025 |
| Dec 1, 2025 | Sow Hang Teo CAO & Treasurer | MOption exercise Common Stock | +864 | $0.00 | $0 | 8,765 | Dec 2, 2025 |
| Dec 1, 2025 | Sow Hang Teo CAO & Treasurer | MOption exercise Restricted Sharesderivative | -864 | $0.00 | $0 | 6,690 | Dec 2, 2025 |
| Oct 1, 2025 | Mark Damian Tattoli SVP, Gen Counsel & Secretary | FTax withholding Common Stock | -276 | $12.58 | $3,472 | 16,719 | Oct 2, 2025 |
| Oct 1, 2025 | Sow Hang Teo CAO & Treasurer | FTax withholding Common Stock | -99 | $12.58 | $1,245 | 7,901 | Oct 2, 2025 |
| Oct 1, 2025 | Sow Hang Teo CAO & Treasurer | MOption exercise Common Stock | +250 | $0.00 | $0 | 8,000 | Oct 2, 2025 |
Insiders
Everyone who has filed a Form 4 here.
- Curt Anastasiodirector
- Lawrence BrunoChairman and CEO
- Martha Z. Carnesdirector
- Gwendolyn GreshamSVP
- Christopher Scott HillSVP & CFO
- Harvey Robert Klingensmithdirector
- Robert F Martinovichdirector
- Katherine Murraydirector
- Mark Damian TattoliSVP, Gen Counsel & Secretary
- Kwaku Temengdirector
- Sow Hang TeoCAO & Treasurer
Questions about CLB
Answered from the filings on this page, as of the latest one.
Are insiders buying CLB?
No. In the last 90 days no insider at Core Laboratories Inc. /DE/ bought or sold shares on the open market according to SEC Form 4 filings. The rows on file from that period are grants, exercises, tax withholding or other transactions, which carry no view on the price.
Who was the last insider to trade CLB on the open market?
No open-market trade has been scored at Core Laboratories Inc. /DE/. The latest Form 4 on file was filed on Oct 5, 2026 and holds grants, exercises or other rows that are not market trades.
How many insiders file Form 4 at Core Laboratories Inc. /DE/?
11 people have filed a Form 4 at Core Laboratories Inc. /DE/, among them Curt Anastasio (director), Lawrence Bruno (Chairman and CEO), Martha Z. Carnes (director). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.