CLB insider trading — Core Laboratories Inc.
Over the last 90 days, insiders at Core Laboratories Inc. (CLB) made 1 open-market purchase worth $54K and 0 open-market sales worth $0, making them net buyers by $54K. The largest purchase was by Bruno Lawrence (Chairman and CEO), who bought 5,000 shares for $54K on Jul 31, 2026.
Updated Oct 16, 2026.
Recent CLB insider transactions
Every Form 4 filed by Core Laboratories Inc. officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.
| Trade date | Insider | Role | Type | Ownership | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| Oct 1, 2026 | Tattoli Mark Damian | SVP, Gen Counsel & Secretary | F · Tax withholding | Direct | 276 | $9.76 | $3K | Form 4 |
| Oct 1, 2026 | Tattoli Mark Damian | SVP, Gen Counsel & Secretary | M · Option exercise | Direct | 700 | — | — | Form 4 |
| Oct 1, 2026 | Teo Sow Hang | CAO & Treasurer | F · Tax withholding | Direct | 99 | $9.76 | $966 | Form 4 |
| Oct 1, 2026 | Teo Sow Hang | CAO & Treasurer | M · Option exercise | Direct | 250 | — | — | Form 4 |
| Jul 31, 2026 | Bruno Lawrence | Chairman and CEO | P · Purchase | Direct | 5,000 | $10.78 | $54K | Form 4 |
| Aug 1, 2026 | Teo Sow Hang | CAO & Treasurer | F · Tax withholding | Direct | 198 | $10.64 | $2K | Form 4 |
| Aug 1, 2026 | Teo Sow Hang | CAO & Treasurer | M · Option exercise | Direct | 440 | — | — | Form 4 |
| Aug 1, 2026 | Tattoli Mark Damian | SVP, Gen Counsel & Secretary | F · Tax withholding | Direct | 99 | $10.64 | $1K | Form 4 |
| Aug 1, 2026 | Tattoli Mark Damian | SVP, Gen Counsel & Secretary | M · Option exercise | Direct | 250 | — | — | Form 4 |
CLB insider trading FAQ
Are insiders buying CLB stock?
Yes. In the last 90 days, Core Laboratories Inc. insiders made 1 open-market purchase totaling $54K, and no open-market sales. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).
Who are the insiders trading CLB?
Recent buyers: Bruno Lawrence.
Where does CLB insider trading data come from?
Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.
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Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.