Core Laboratories Inc.
US ˙ NYSE ˙ US21867A1051

SecurityCLB / Core Laboratories Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership22,643 shares
Latest Disclosed Value $ 362,966
Sei Investments Co ownership in CLB / Core Laboratories Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 22,643 shares of Core Laboratories Inc. (US:CLB) valued at $362,967 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 22,643 shares of Core Laboratories Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $309,303 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-02-13 2025-12-31 13F CORE LABORATORIES COM 21867A105 22,643 0 0.00 363 29.75 0.0004
2025-11-13 2025-09-30 13F CORE LABORATORIES COM 21867A105 22,643 2,550 12.69 280 20.78 0.0003
2025-08-14 2025-06-30 13F CORE LABORATORIES COM 21867A105 20,093 -202 -1.00 231 -24.01 0.0003
2025-05-14 2025-03-31 13F/A-1 CORE LABORATORIES COM 21867A105 20,295 20,295 304 0.0004
2024-11-12 2024-09-30 13F CORE LABORATORIES COM 21867A105 0 -35,193 -100.00 0 -100.00
2024-08-13 2024-06-30 13F CORE LABORATORIES COM 21867A105 35,193 -1,110 -3.06 714 15.16 0.0010
2024-05-07 2024-03-31 13F CORE LABORATORIES COM 21867A105 36,303 17,371 91.75 620 85.63 0.0009
2024-02-14 2023-12-31 13F CORE LABORATORIES COM 21867A105 18,932 1,739 10.11 334 -18.93 0.0005
2023-11-14 2023-09-30 13F CORE LABORATORIES COM 21867A105 17,193 3,185 22.74 413 26.77 0.0007
2023-08-11 2023-06-30 13F CORE LABORATORIES COM 21867A105 14,008 -452,613 -97.00 326 -96.84 0.0006
2023-05-12 2023-03-31 13F CORE LABORATORIES N V COM N22717107 466,621 -12,246 -2.56 10,289 6.01 0.0191
2023-02-10 2022-12-31 13F CORE LABORATORIES N V COM N22717107 478,867 2,871 0.60 9,707 51.28 0.0216
2022-11-14 2022-09-30 13F CORE LABORATORIES N V COM N22717107 475,996 -6,581 -1.36 6,416 -32.88 0.0143
2022-08-15 2022-06-30 13F CORE LABORATORIES N V COM N22717107 482,577 -6,907 -1.41 9,559 -38.26 0.0206
2022-05-13 2022-03-31 13F CORE LABORATORIES N V COM N22717107 489,484 -9,735 -1.95 15,483 39.05 0.0311
2022-02-14 2021-12-31 13F CORE LABORATORIES N V COM N22717107 499,219 -35,523 -6.64 11,135 -24.98 0.0209
2021-11-12 2021-09-30 13F CORE LABORATORIES N V COM N22717107 534,742 -3,516 -0.65 14,842 -29.22 0.0311
2021-08-06 2021-06-30 13F CORE LABORATORIES N V COM N22717107 538,258 2,363 0.44 20,969 36.19 0.0465
2021-05-12 2021-03-31 13F CORE LABORATORIES N V COM N22717107 535,895 -31,846 -5.61 15,397 2.33 0.0388
2021-02-08 2020-12-31 13F CORE LABORATORIES N V COM N22717107 567,741 -39,835 -6.56 15,047 62.14 0.0389
2020-12-04 2020-09-30 13F/A-1 CORE LABORATORIES N V COM N22717107 607,576 83,344 15.90 9,280 -12.94 0.0269
2020-11-06 2020-09-30 13F CORE LABORATORIES N V COM N22717107 608,118 83,886 9,288 22,363.4389
2020-08-17 2020-06-30 13F/A-1 CORE LABORATORIES N V COM N22717107 524,232 -65,373 -11.09 10,659 75.54 0.0331
2020-08-11 2020-06-30 13F CORE LABORATORIES N V COM N22717107 308,260 -281,345 11,391 30,898.6938
2020-05-14 2020-03-31 13F CORE LABORATORIES N V COM N22717107 589,605 -55,316 -8.58 6,072 -74.94 0.0223
2020-02-06 2019-12-31 13F CORE LABORATORIES N V COM N22717107 644,921 -6,805 -1.04 24,227 -20.12 0.0723
2019-11-12 2019-09-30 13F CORE LABORATORIES N V COM N22717107 651,726 206,627 46.42 30,329 30.60 0.0776
2019-08-14 2019-06-30 13F CORE LABORATORIES N V COM N22717107 445,099 -4,247 -0.95 23,222 -24.95 0.0759
2019-05-15 2019-03-31 13F CORE LABORATORIES N V COM N22717107 449,346 -132,787 -22.81 30,940 -42.60 0.1039
2019-02-13 2018-12-31 13F CORE LABORATORIES N V COM N22717107 582,133 6,472 1.12 53,906 -19.20 0.1919
2018-11-08 2018-09-30 13F CORE LABORATORIES N V COM N22717107 575,661 -46,481 -7.47 66,716 -15.03 0.2418
2018-08-03 2018-06-30 13F CORE LABORATORIES N V COM N22717107 622,142 -16,581 -2.60 78,521 13.60 0.2669
2018-05-11 2018-03-31 13F CORE LABORATORIES N V COM N22717107 638,723 182,848 40.11 69,123 38.41 0.2650
2018-02-08 2017-12-31 13F CORE LABORATORIES N V COM N22717107 455,875 58,402 14.69 49,942 27.30 0.1734
2017-11-06 2017-09-30 13F CORE LABORATORIES N V COM N22717107 397,473 -268,344 -40.30 39,232 -41.81 0.1394
2017-07-31 2017-06-30 13F CORE LABORATORIES N V COM N22717107 665,817 247,042 58.99 67,426 39.38 0.2688
2017-05-05 2017-03-31 13F CORE LABORATORIES N V COM N22717107 418,775 25,980 6.61 48,377 2.60 0.2120
2017-02-02 2016-12-31 13F CORE LABORATORIES N V COM N22717107 392,795 -22,246 -5.36 47,151 1.13 0.2283
2016-11-04 2016-09-30 13F CORE LABORATORIES N V COM N22717107 415,041 -4,653 -1.11 46,622 -10.34 0.2368
2016-08-11 2016-06-30 13F CORE LABORATORIES N V COM N22717107 419,694 -19,073 -4.35 51,996 5.42 0.3119
2016-05-10 2016-03-31 13F/A-1 CORE LABORATORIES N V COM N22717107 438,767 45,007 11.43 49,322 15.19 0.3069
2016-02-03 2015-12-31 13F CORE LABORATORIES N V COM N22717107 393,760 100,169 34.12 42,818 46.13 0.2610
2015-11-02 2015-09-30 13F/A-1 CORE LABORATORIES N V COM N22717107 293,591 926 0.32 29,301 -12.21 0.2690
2015-10-30 2015-09-30 13F CORE LABORATORIES N V COM N22717107 293,591 29,302
2015-08-07 2015-06-30 13F/A-1 CORE LABORATORIES N V COM N22717107 292,665 -9,764 -3.23 33,375 5.61 0.3017
2015-08-04 2015-06-30 13F CORE LABORATORIES N V COM N22717107 292,665 -9,764 33,375 0.3017
2015-05-14 2015-03-31 13F/A-1 CORE LABORATORIES N V COM N22717107 302,429 8,181 2.78 31,601 -10.76 0.2744
2015-05-01 2015-03-31 13F CORE LABORATORIES N V COM N22717107 302,429 31,601
2015-02-10 2014-12-31 13F CORE LABORATORIES N V COM N22717107 294,248 294,248 35,410 0.3130
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.