NYSE:CLB

Core Laboratories Nv Stock Insider Trading

Energy > Oil & Gas Equipment & Services

Buy CLB

*Your capital is at risk

$13.36

-0.240 (-1.76%)

At Close: Jun 03, 2026

Core Laboratories NV Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 73.46. In total, the insiders bought 1.17M and sold 180.74K CLB shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	73.46
● Buy	1.17M shares
● Sell	180.74K shares
78% Buy Activity Moderate Negative Correlation
Buy Signal High Confidence Feb 12, 2026 Analysis Breakdown: Strongly supported by a very high Insider Power Score of 73.46. Confidence increased due to high data reliability score of 100. Supported by overwhelming buy-side pressure (78% buys).

Historical Insider Trades

Date	Type	Person	Role	Amount
Oct 01, 2025 Buy	Restricted Shares M-Exempt	Tattoli Mark Damian SVP, Gen Counsel & Secretary	Officer	700 Value: $9K
Oct 01, 2025 Sell	Common Stock F-InKind	Tattoli Mark Damian SVP, Gen Counsel & Secretary	Officer	276 Value: $3K
Oct 01, 2025 Buy	Common Stock M-Exempt	Tattoli Mark Damian SVP, Gen Counsel & Secretary	Officer	700 Value: $9K
Aug 01, 2025 Buy	Common Stock M-Exempt	Tattoli Mark Damian SVP, Gen Counsel & Secretary	Officer	250 Value: $3K
Aug 01, 2025 Sell	Common Stock F-InKind	Tattoli Mark Damian SVP, Gen Counsel & Secretary	Officer	99 Value: $1K
Aug 01, 2025 Buy	Restricted Shares M-Exempt	Tattoli Mark Damian SVP, Gen Counsel & Secretary	Officer	250 Value: $3K
Aug 01, 2025 Buy	Restricted Shares M-Exempt	Teo Sow Hang Cao & Treasurer	Officer	240 Value: $3K
Aug 01, 2025 Buy	Common Stock M-Exempt	Teo Sow Hang Cao & Treasurer	Officer	200 Value: $2K
Aug 01, 2025 Buy	Restricted Shares M-Exempt	Teo Sow Hang Cao & Treasurer	Officer	200 Value: $2K
Aug 01, 2025 Sell	Common Stock F-InKind	Teo Sow Hang Cao & Treasurer	Officer	90 Value: $948
Aug 01, 2025 Buy	Common Stock M-Exempt	Teo Sow Hang Cao & Treasurer	Officer	240 Value: $3K
Aug 01, 2025 Sell	Common Stock F-InKind	Teo Sow Hang Cao & Treasurer	Officer	108 Value: $1K
Aug 01, 2025 Sell	Common Stock F-InKind	Teo Sow Hang Cao & Treasurer	Officer	108 Value: $1K
Aug 01, 2025 Buy	Common Stock M-Exempt	Teo Sow Hang Cao & Treasurer	Officer	240 Value: $3K
Aug 01, 2025 Sell	Common Stock F-InKind	Teo Sow Hang Cao & Treasurer	Officer	90 Value: $948
Aug 01, 2025 Buy	Restricted Shares M-Exempt	Teo Sow Hang Cao & Treasurer	Officer	200 Value: $2K
Aug 01, 2025 Buy	Common Stock M-Exempt	Teo Sow Hang Cao & Treasurer	Officer	200 Value: $2K
Aug 01, 2025 Buy	Restricted Shares M-Exempt	Teo Sow Hang Cao & Treasurer	Officer	240 Value: $3K
Aug 01, 2025 Buy	Restricted Shares M-Exempt	Tattoli Mark Damian SVP, Gen Counsel & Secretary	Officer	250 Value: $3K
Aug 01, 2025 Sell	Common Stock F-InKind	Tattoli Mark Damian SVP, Gen Counsel & Secretary	Officer	99 Value: $1K
Aug 01, 2025 Buy	Common Stock M-Exempt	Tattoli Mark Damian SVP, Gen Counsel & Secretary	Officer	250 Value: $3K
May 21, 2025 Buy	Restricted Shares	Martinovich Robert F Director	Director	8 069 Value: $89.7K
May 21, 2025 Buy	Common Stock	Martinovich Robert F Director	Director	0 Value: $0
May 21, 2025 Buy	Common Stock	Martinovich Robert F Director	Director	0 Value: $0
May 21, 2025 Buy	Restricted Shares	Martinovich Robert F Director	Director	8 069 Value: $89.7K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT CORE LABORATORIES NV

Core Laboratories N.V. provides reservoir description and production enhancement services and products to the oil and gas industry in the United States, Canada, and internationally. It operates through Reservoir Description and Production Enhancement segments. The Reservoir Description segment includes the characterization of petroleum reservoir rock, reservoir fluid, and gas samples to enhance production and improve recovery of oil and gas from ...

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