Core Laboratories Inc.
US ˙ NYSE ˙ US21867A1051

SecurityCLB / Core Laboratories Inc.
InstitutionAdvisory Services Network, LLC
Latest Disclosed Ownership127 shares
Latest Disclosed Value $ 2,133
Advisory Services Network, LLC ownership in CLB / Core Laboratories Inc.

On May 15, 2026 - Advisory Services Network, LLC filed a 13F-HR form disclosing ownership of 127 shares of Core Laboratories Inc. (US:CLB) valued at $2,132 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 0 shares of Core Laboratories Inc.. The current value of the position is $1,642 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)
2026-05-15 2026-03-31 13F CORE LABORATORIES Stock 21867A105 127 127 2 0.0000
2026-02-17 2025-12-31 13F CORE LABORATORIES Stock 21867A105 0 -7 -100.00 0 0.0000
2025-11-18 2025-09-30 13F CORE LABORATORIES Stock 21867A105 7 7 0 0.0000
2024-05-06 2024-03-31 13F CORE LABORATORIES Stock 21867A105 0 -1,277 -100.00 0 -100.00
2024-02-09 2023-12-31 13F CORE LABORATORIES Stock 21867A105 1,277 1,277 23 0.0006
2023-08-09 2023-06-30 13F CORE LABORATORIES Stock 21867A105 0 -1,277 -100.00 0 -100.00
2023-05-17 2023-03-31 13F CORE LABORATORIES Stock 21867A105 1,277 -1,063 -45.43 28 -40.43 0.0008
2023-02-13 2022-12-31 13F CORE LABORATORIES N V Stock N22717107 2,340 2,340 47 0.0015
2022-05-23 2022-03-31 13F CORE LABORATORIES N V Stock N22717107 0 -25,109 -100.00 0 -100.00
2022-02-14 2021-12-31 13F CORE LABORATORIES N V Stock N22717107 25,109 200 0.80 560 -18.96 0.0161
2021-11-05 2021-09-30 13F CORE LABORATORIES N V Stock N22717107 24,909 22,757 1,057.48 691 722.62 0.0220
2021-08-12 2021-06-30 13F CORE LABORATORIES N V Stock N22717107 2,152 2,152 84 0.0026
2021-05-24 2021-03-31 13F CORE LABORATORIES N V Stock N22717107 0 -150 -100.00 0 -100.00
2021-02-09 2020-12-31 13F CORE LABORATORIES N V Stock N22717107 150 -2,046 -93.17 4 -88.24 0.0002
2020-11-16 2020-09-30 13F CORE LABORATORIES N V Stock N22717107 2,196 2,196 1,364.00 34 750.00 0.0016
2020-08-10 2020-06-30 13F CORE LABORATORIES N V Stock N22717107 0 -2,355 -100.00 0 -100.00
2020-05-15 2020-03-31 13F CORE LABORATORIES N V Stock N22717107 2,355 -118 -4.77 24 -74.19 0.0016
2020-02-04 2019-12-31 13F CORE LABORATORIES N V Stock N22717107 2,473 664 36.71 93 -2.11 0.0049
2019-11-04 2019-09-30 13F CORE LABORATORIES N V Stock N22717107 1,809 0 0.00 95 0.00 0.0058
2019-08-01 2019-06-30 13F CORE LABORATORIES N V Stock N22717107 1,809 1,364 306.52 95 216.67 0.0058
2019-05-20 2019-03-31 13F CORE LABORATORIES N V Stock N22717107 445 135 43.55 30 57.89 0.0021
2019-02-15 2018-12-31 13F CORE LABORATORIES N V Stock N22717107 310 -43 -12.18 19 -53.66 0.0017
2018-11-02 2018-09-30 13F CORE LABORATORIES N V Stock N22717107 353 -196 -35.70 41 -32.79 0.0030
2018-07-27 2018-06-30 13F CORE LABORATORIES N V Stock N22717107 549 -248 -31.12 61 -29.07 0.0046
2018-04-23 2018-03-31 13F CORE LABORATORIES N V Stock N22717107 797 1 0.13 86 -1.15 0.0069
2018-02-08 2017-12-31 13F CORE LABORATORIES N V Stock N22717107 796 -14 -1.73 87 8.75 0.0076
2017-10-12 2017-09-30 13F CORE LABORATORIES N V Stock N22717107 810 -555 -40.66 80 -42.03 0.0092
2017-08-17 2017-06-30 13F CORE LABORATORIES N V COM Stock N22717107 1,365 341 33.30 138 16.95 0.0180
2017-04-28 2017-03-31 13F CORE LABORATORIES N V COM Stock N22717107 1,024 -38 -3.58 118 -0.84 0.0171
2016-10-07 2016-09-30 13F CORE LABORATORIES N V Stock N22717107 1,062 265 33.25 119 20.20 0.0224
2016-07-27 2016-06-30 13F CORE LABORATORIES N V Stock N22717107 797 -33 -3.98 99 6.45 0.0225
2016-04-21 2016-03-31 13F CORE LABORATORIES N V Stock N22717107 830 0 0.00 93 3.33 0.0254
2016-01-27 2015-12-31 13F CORE LABORATORIES N V COM Stock N22717107 830 0 0.00 90 8.43 0.0289
2015-10-01 2015-09-30 13F CORE LABORATORIES Stock N22717107 830 628 310.89 83 277.27 0.0251
2015-07-02 2015-06-30 13F CORE LABORATORIES Stock N22717107 202 190 1,583.33 22 2,100.00 0.0065
2015-04-08 2015-03-31 13F CORE LABORATORIES Stock N22717107 12 0 0.00 1 0.00 0.0003
2015-01-23 2014-12-31 13F CORE LABORATORIES Stock N22717107 12 12 1 0.0003
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.