Core Laboratories Inc. (CLB)
NYSE: CLB · Oil & Gas Field Services, NEC · Houston, TX · filing with the SEC since 2023
Grade5.5
◀ Past 5.9● Present 5.4▶ Future 5.4
Who owns Core Laboratories Inc.
As filed with the SECHolders of 5% or more
4
Ariel Investments, LLC holds 30.5% of Common Stock SH, as its SCHEDULE 13G/A filed Aug 14, 2026 says.
Directors and officers
11
report now, of 13 people on the record since 2022. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 4 named at left.
Holders of 5% or moreshare of the class, as filed
Ariel Investments, LLC
SCHEDULE 13G/A · filed Aug 14, 2026 · Common Stock SH · 29.4% in Nov 14, 2025
Blackrock, Inc.
SCHEDULE 13G/A · filed Aug 6, 2026 · Common Stock · 15.5% in Apr 29, 2025
Earnest Partners LLC
SCHEDULE 13G/A · filed Feb 12, 2026 · Common Stock
Disciplined Growth Investors Inc /mn
SCHEDULE 13G/A · filed Aug 14, 2026 · Common Shares · 10.7% in May 15, 2026
The Vanguard Group
SCHEDULE 13G/A · filed Mar 26, 2026 · Common Stock · reported falling below 5%, from 6.49% in Oct 30, 2025
What CLB reports owning in othersstakes of 5% or more, and other ties
9 subsidiaries in 1 country, from the list filed with the 10-K filed Mar 23, 2026.
Insider tradesForm 4
0sales
1purchases
0sales on a scheduled plan
0people selling
$0sold, in dollars
$100,000bought, in dollars
Open-market trades on Form 4 from Oct 5, 2025 to Oct 5, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Oct 5, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window1 of 13 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Bruno Lawrence | Chairman and CEO | 0 | $0 | 0 | 1 | $100,000 |