CLB: Core Laboratories Inc. /DE/ insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 0 sales totaling - in the last 180 days.
Activist and 5% holders
| Filed | What | Holder | Stake | Change | Filing |
|---|---|---|---|---|---|
| 2026-08-14 | 13G amendment | DISCIPLINED GROWTH INVESTORS INC /MN | 6.60% | SEC | |
| 2026-08-14 | 13G amendment | Ariel Investments, LLC | 30.50% | SEC | |
| 2026-08-06 | 13G amendment | BlackRock, Inc. | 8.30% | SEC |
Institutional ownership (Q2 2026)
186 institutions reported holding $604.92M of Core Laboratories Inc. /DE/ on Form 13F (190 the quarter before). 28 opened a new position and 31 sold out. Shares held by institutions: +4%.
| Largest holders | Shares | Value |
|---|---|---|
| ARIEL INVESTMENTS, LLC | 14,074,945 | $163.97M |
| BlackRock, Inc. | 7,460,118 | $86.91M |
| DISCIPLINED GROWTH INVESTORS INC /MN | 3,042,177 | $35.44M |
| EARNEST PARTNERS LLC | 2,941,004 | $34.26M |
| STATE STREET CORP | 2,176,480 | $25.36M |
| CWA Asset Management Group, LLC | 1,755,085 | $20.45M |
| VANGUARD CAPITAL MANAGEMENT LLC | 1,590,521 | $18.53M |
| DIMENSIONAL FUND ADVISORS LP | 1,548,203 | $18.03M |
| SCHRODER INVESTMENT MANAGEMENT GROUP | 1,543,638 | $16.86M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1,275,421 | $14.86M |
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