🕵️ CORE Laboratories Inc. /DE/ ($CLB)
SEC insider & ownership activity, last 12 months · CIK 1958086 · every row links its SEC filing
Insiders were quiet over the last 12 months – no open-market buys or sells. Ariel Investments, LLC added 26.9% → 29.4%; Disciplined Growth Investors Inc /MN trimmed 11.1% → 10.7%. No red-flag 8-Ks in the window.
Insider flow
0 buyers, $0 (0 lots) · 0 sellers, $0 (0 lots)
No open-market insider transactions in the last 12 months.
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Ariel Investments, LLC | 29.4% | 13G | Nov 14, 2025 | filing ↗ | |
| Blackrock, Inc. | 15.5% | 13G | Apr 29, 2025 | filing ↗ | |
| Disciplined Growth Investors Inc /MN | 10.7% | 13G | May 15, 2026 | filing ↗ | |
| Earnest Partners LLC | 6.9% | 13G | Feb 12, 2026 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Jul 29, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jul 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 29, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 12, 2026 | filing ↗ |
| Earnings (2.02) | Apr 29, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Apr 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 29, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Mar 23, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 23, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | Feb 27, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 27, 2026 | filing ↗ |
| Earnings (2.02) | Feb 4, 2026 | filing ↗ |
| Earnings (2.02) | Feb 4, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 4, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 4, 2026 | filing ↗ |
| Earnings (2.02) | Oct 22, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Oct 22, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 22, 2025 | filing ↗ |