Core Laboratories NV
Ownership
Ownership Structure
Who owns Core Laboratories NV (CLB)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 98.6% of the shares are freely tradable; institutional investors hold 113.7%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Ariel Investments, LLC | 30.67 | 14,074,945 | +6.9 | 06/30/2026 |
| BlackRock Inc | 15.71 | 7,208,503 | +0.8 | 03/31/2026 |
| Earnest Partners LLC | 6.66 | 3,055,996 | -5.1 | 03/31/2026 |
| Disciplined Growth Investors Inc | 6.63 | 3,042,177 | -38.4 | 06/30/2026 |
| State Street Corp | 4.49 | 2,060,537 | +0.9 | 03/31/2026 |
| CWA Asset Management Group, LLC | 3.83 | 1,755,085 | +0.8 | 06/30/2026 |
| Vanguard Capital Management, LLC | 3.53 | 1,619,863 | +0.0 | 03/31/2026 |
| Dimensional Fund Advisors, Inc. | 3.37 | 1,548,203 | +14.5 | 06/30/2026 |
| Schroder Investment Management Group | 3.36 | 1,543,638 | +0.0 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Ariel Fund Investor | 14.11 | 6,474,663 | +19.6 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Bruno Lawrence | Chairman and CEO | 262,438 | 2,991,793 $ | Jul 31, 2026 | direct |
| Tattoli Mark Damian | SVP, Gen Counsel & Secretary | 27,764 | 316,505 $ | Aug 1, 2026 | direct |
| Teo Sow Hang | CAO & Treasurer | 8,625 | 98,329 $ | Aug 1, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 1, 2026 | Teo Sow Hang | CAO & Treasurer | Other | 200 | 0.00 | – |
| Aug 1, 2026 | Teo Sow Hang | CAO & Treasurer | Other | 90 | 10.64 | 958 |
| Aug 1, 2026 | Teo Sow Hang | CAO & Treasurer | Other | 240 | 0.00 | – |
| Aug 1, 2026 | Teo Sow Hang | CAO & Treasurer | Other | 108 | 10.64 | 1,149 |
| Aug 1, 2026 | Tattoli Mark Damian | SVP, Gen Counsel & Secretary | Other | 250 | 0.00 | – |
| Aug 1, 2026 | Tattoli Mark Damian | SVP, Gen Counsel & Secretary | Other | 99 | 10.64 | 1,053 |
| Jul 31, 2026 | Bruno Lawrence | Chairman and CEO | Buy | 5,000 | 10.78 | 53,900 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.