Quick Takeaways
- CORE LABORATORIES N V has 12 insiders with reported activity on this page.
- No net insider buy/sell flow is currently reported for the last year.
- Recent transaction rows are not currently available.
Insider Transactions Reported by 12 Insiders of CORE LABORATORIES N V
- Location
- 1181 Le Amstelveen, Netherlands
What Changed
- No meaningful buy/sell imbalance is currently visible in the one-year window.
- Activity will update as new Forms 3/4/5 are filed.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsInsider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 16 May 2025.
Buys
$0
Shares: 0
Insiders: 0
Sells
$0
Shares: 0
Insiders: 0
Net
$0
Shares: 0
Insiders: 0
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
CORE LABORATORIES N V executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Kwaku Temeng | Director | Mixed | 01 Apr 2023 | |||
| Kevin Daniels | CAO & Treasurer | Mixed | 16 Feb 2023 | |||
| Martha Z. Carnes | Director | Mixed | 01 Apr 2023 | |||
| Gwendolyn Gresham | Svp | Mixed | 16 Feb 2023 | |||
| Lawrence Bruno | Chairman and CEO, Director | Mixed | 16 Feb 2023 | |||
| Harvey Robert Klingensmith | Director | Mixed | 01 Apr 2023 | |||
| Gregory Barry Barnett | Director | Mixed | 01 Apr 2022 | |||
| Michael Straughen | Director | Mixed | 01 Apr 2023 | |||
| Eeuwijk Monique van Dijken | Director | Mixed | 01 Apr 2023 | |||
| Katherine Murray | Director | Mixed | 01 Apr 2023 | |||
| Mark D. Tattoli | SVP, Gen Counsel & Secretary | Mixed | 16 Feb 2023 | |||
| Christopher Scott Hill | Svp & Cfo | Mixed | 16 Feb 2023 |
Top shareholders of CORE LABORATORIES N V (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Lawrence Bruno |
3/4/5
|
Chairman and CEO, Director |
—
class O/S missing
|
155,126
|
— | — | 16 Feb 2023 | |
| Christopher Scott Hill |
3/4/5
|
SVP & CFO |
—
class O/S missing
|
52,718
|
— | — | 16 Feb 2023 | |
| Gregory Barry Barnett |
3/4/5
|
Director |
—
class O/S missing
|
33,907
|
— | — | 01 Apr 2022 | |
| Martha Z. Carnes |
3/4/5
|
Director |
—
class O/S missing
|
30,592
|
— | — | 01 Apr 2023 | |
| Harvey Robert Klingensmith |
3/4/5
|
Director |
—
class O/S missing
|
26,226
|
— | — | 01 Apr 2023 | |
| Eeuwijk Monique van Dijken |
3/4/5
|
Director |
—
mixed-class rows
|
22,603
mixed-class rows
|
— | — | 01 Apr 2023 | |
| Gwendolyn Gresham |
3/4/5
|
SVP |
—
class O/S missing
|
21,418
|
— | — | 16 Feb 2023 | |
| Mark D. Tattoli |
3/4/5
|
SVP, Gen Counsel & Secretary |
—
class O/S missing
|
21,418
|
— | — | 16 Feb 2023 | |
| Michael Straughen |
3/4/5
|
Director |
—
class O/S missing
|
18,991
|
— | — | 01 Apr 2023 | |
| Kevin Daniels |
3/4/5
|
CAO & Treasurer |
—
class O/S missing
|
12,240
|
— | — | 16 Feb 2023 | |
| Kwaku Temeng |
3/4/5
|
Director |
—
class O/S missing
|
9,792
|
— | — | 01 Apr 2023 | |
| Katherine Murray |
3/4/5
|
Director |
—
class O/S missing
|
5,485
|
— | — | 01 Apr 2023 |
Recent Insider Transactions by Companies or Individuals for CORE LABORATORIES N V
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| No insider transactions were found in the last 12 months for this issuer. | ||||||||||
* An asterisk sign (*) next to the price indicates that the price is likely invalid.