Core Laboratories N.V.
Core Laboratories N.V. (CLB) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · CLB · as of Jun 9, 2026
Activity summary
Buy transactions
0
P-Purchase only
Sell transactions
0
12 Months
Buy/Sell ratio
0.00
Buy/Sell (by trades)
Overall sentiment
Core Laboratories N.V. insiders have shown mixed buying and selling activity over the past 12 Months.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 9, 2026
CLB insider buying and selling by quarter
CLB insider selling · CLB insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 9, 2026
Active insiders
Most active in past 12 months · CLB ceo insider trading
Showing all insiders · Click a card to filter the transactions table below
▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API
Recent insider transactions
CLB executive sell shares · CLB board member insider trading · CLB insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| May 1, 2026 | Tattoli Mark Damian SVP, Gen Counsel & Secretary | Option | 250 | — | Form 4 |
| May 1, 2026 | Tattoli Mark Damian SVP, Gen Counsel & Secretary | Other | 97 | $1K | Form 4 |
| Apr 1, 2026 | Murray Katherine Director | Option | 8,069 | — | Form 4 |
| Apr 1, 2026 | ANASTASIO CURT Director | Option | 8,069 | — | Form 4 |
| Apr 1, 2026 | Klingensmith Harvey Robert Director | Option | 8,069 | — | Form 4 |
| Apr 1, 2026 | Temeng Kwaku Director | Option | 8,069 | — | Form 4 |
| Apr 1, 2026 | MARTINOVICH ROBERT F Director | Option | 8,069 | — | Form 4 |
| Apr 1, 2026 | Carnes Martha Z. Director | Option | 8,069 | — | Form 4 |
| Dec 31, 2025 | Tattoli Mark Damian SVP, Gen Counsel & Secretary | Option | 24,952 | — | Form 4 |
| Dec 31, 2025 | Tattoli Mark Damian SVP, Gen Counsel & Secretary | Other | 14,310 | $229K | Form 4 |
| Dec 31, 2025 | Gresham Gwendolyn SVP | Option | 24,952 | — | Form 4 |
| Dec 31, 2025 | Gresham Gwendolyn SVP | Other | 19,301 | $309K | Form 4 |
| Dec 31, 2025 | Hill Christopher Scott SVP & CFO | Option | 61,417 | — | Form 4 |
| Dec 31, 2025 | Hill Christopher Scott SVP & CFO | Other | 32,152 | $515K | Form 4 |
| Dec 31, 2025 | Bruno Lawrence Chairman and CEO · Director | Option | 180,722 | — | Form 4 |
| Dec 31, 2025 | Bruno Lawrence Chairman and CEO · Director | Other | 112,681 | $1.81M⚡ | Form 4 |
| Dec 1, 2025 | Teo Sow Hang CAO & Treasurer | Option | 864 | — | Form 4 |
| Dec 1, 2025 | Teo Sow Hang CAO & Treasurer | Other | 340 | $5K | Form 4 |
| Oct 1, 2025 | Tattoli Mark Damian SVP, Gen Counsel & Secretary | Option | 700 | — | Form 4 |
| Oct 1, 2025 | Tattoli Mark Damian SVP, Gen Counsel & Secretary | Other | 276 | $3K | Form 4 |
| Oct 1, 2025 | Teo Sow Hang CAO & Treasurer | Option | 250 | — | Form 4 |
| Oct 1, 2025 | Teo Sow Hang CAO & Treasurer | Other | 99 | $1K | Form 4 |
| Aug 1, 2025 | Tattoli Mark Damian SVP, Gen Counsel & Secretary | Option | 250 | — | Form 4 |
| Aug 1, 2025 | Tattoli Mark Damian SVP, Gen Counsel & Secretary | Other | 99 | $1K | Form 4 |
| Aug 1, 2025 | Teo Sow Hang CAO & Treasurer | Option | 200 | — | Form 4 |
Tattoli Mark Damian
SVP, Gen Counsel & Secretary
Date
May 1
Shares
250
Price
—
Value
—
Tattoli Mark Damian
SVP, Gen Counsel & Secretary
Date
May 1
Shares
97
Price
$14.07
Value
$1K
Tattoli Mark Damian
SVP, Gen Counsel & Secretary
Date
Dec 31
Shares
24,952
Price
—
Value
—
Tattoli Mark Damian
SVP, Gen Counsel & Secretary
Date
Dec 31
Shares
14,310
Price
$16.03
Value
$229K
Hill Christopher Scott
SVP & CFO
Date
Dec 31
Shares
32,152
Price
$16.03
Value
$515K
Bruno Lawrence
Chairman and CEO · Director
Date
Dec 31
Shares
180,722
Price
—
Value
—
Bruno Lawrence
Chairman and CEO · Director
Date
Dec 31
Shares
112,681
Price
$16.03
Value
$1.81M ⚡
Tattoli Mark Damian
SVP, Gen Counsel & Secretary
Date
Oct 1
Shares
700
Price
—
Value
—
Tattoli Mark Damian
SVP, Gen Counsel & Secretary
Date
Oct 1
Shares
276
Price
$12.58
Value
$3K
Tattoli Mark Damian
SVP, Gen Counsel & Secretary
Date
Aug 1
Shares
250
Price
—
Value
—
Tattoli Mark Damian
SVP, Gen Counsel & Secretary
Date
Aug 1
Shares
99
Price
$10.53
Value
$1K
⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About CLB insider trading
CLB insider trades
Core Laboratories N.V. (CLB) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including Tattoli Mark Damian (SVP, Gen Counsel & Secretary), Teo Sow Hang (CAO & Treasurer), Gresham Gwendolyn (SVP). Over the past 12 months, 5 insiders have filed transactions with the SEC. CLB insiders have been mixed buying and selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For Core Laboratories N.V.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
CLB insider trading · 5 questionsThe insiders of Core Laboratories N.V. (CLB) include executives and directors such as Tattoli Mark Damian (SVP, Gen Counsel & Secretary), Teo Sow Hang (CAO & Treasurer), Gresham Gwendolyn (SVP), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 9, 2026