Core Laboratories Inc.
CLB- Exchange
- NYSE
- Industry
- Oil & Gas Field Services, NEC
- SEC CIK
- 0001958086
In the last 90 days, Core Laboratories Inc. insiders filed 1 open-market purchase and 0 sales; 186 institutions reported holding it in 13F filings for Q2 2026, worth $612.8M in total; no superinvestor holds it.
Holders of 5% or more of CLB
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Core Laboratories Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Ariel Investments, LLC | 13G/A | 29.40%13.8M shares | +2.50 ppfrom 26.90% | Nov 13, 20243 filings | Nov 14, 2025 | SEC |
| BlackRock, Inc. | 13G/A | 15.50%7.26M shares | – | Apr 29, 20251 filing | Apr 29, 2025 | SEC |
| Disciplined Growth Investors Inc | 13G/A | 11.10%5.17M shares | −1.70 ppfrom 12.80% | Nov 14, 20246 filings | Feb 17, 2026 | SEC |
| Earnest Partners LLC | 13G/A | 6.90%3.22M shares | – | Feb 12, 20261 filing | Feb 12, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
14 Schedule 13D and 13G filings on Core Laboratories Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 26, 20265:39 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −6.49 ppfrom 6.49%Below 5% | Mar 13, 2026 | SEC |
| Feb 17, 20264:26 PM ET | Disciplined Growth Investors Inc | 13G/A | 11.10%5.17M shares | −1.70 ppfrom 12.80% | Dec 31, 2025 | SEC |
| Feb 12, 20264:19 PM ET | Earnest Partners LLC | 13G/A | 6.90%3.22M shares | – | Dec 31, 2025 | SEC |
| Nov 14, 20253:42 PM ET | Disciplined Growth Investors Inc | 13G/A | 12.80%5.97M shares | +1.20 ppfrom 11.60% | Sep 30, 2025 | SEC |
| Nov 14, 202511:18 AM ET | Ariel Investments, LLC | 13G/A | 29.40%13.8M shares | +2.50 ppfrom 26.90% | Sep 30, 2025 | SEC |
| Oct 30, 20252:56 PM ET | Vanguard Group Inc | 13G/A | 6.49%3.05M shares | −3.06 ppfrom 9.55% | Sep 30, 2025 | SEC |
| Aug 14, 20255:27 PM ET | Disciplined Growth Investors Inc | 13G/A | 11.60%5.44M shares | −0.10 ppfrom 11.70% | Jun 30, 2025 | SEC |
| Jul 29, 202511:22 AM ET | Vanguard Group Inc | 13G/A | 9.55%4.48M shares | – | Jun 30, 2025 | SEC |
| Jun 5, 20255:18 PM ET | Ariel Investments, LLC | 13G/A | 26.90%12.6M shares | +5.50 ppfrom 21.40% | May 31, 2025 | SEC |
| May 15, 20254:10 PM ET | Disciplined Growth Investors Inc | 13G/A | 11.70%5.49M shares | 0.00 ppfrom 11.70% | Mar 31, 2025 | SEC |
| Apr 29, 202512:13 PM ET | BlackRock, Inc. | 13G/A | 15.50%7.26M shares | – | Mar 31, 2025 | SEC |
| Feb 14, 20252:44 PM ET | Disciplined Growth Investors Inc | 13G/A | 11.70%5.50M shares | −0.30 ppfrom 12.00% | Dec 31, 2024 | SEC |
| Nov 14, 20245:01 PM ET | Disciplined Growth Investors Inc | 13G | 12.00%5.65M shares | New | Sep 30, 2024 | SEC |
| Nov 13, 202410:51 AM ET | Ariel Investments, LLC | 13G/A | 21.40%10.0M shares | – | Sep 30, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Core Laboratories Inc. shares.
No Form 144 notices for Core Laboratories Inc. are on file.