Welcome to our dedicated page for Core Laboratories SEC filings (Ticker: CLB), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Reservoir porosity tables, propellant acronyms, and global drilling statistics crowd Core Laboratories’ latest SEC reports. If you’re paging through a 300-plus page CLB annual report just to confirm how much revenue Production Enhancement contributed or when the next debt tranche matures, time is slipping away. Investors searching “Core Laboratories SEC filings explained simply” deserve a faster way to extract what matters.
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Disciplined Growth Investors, Inc. reports beneficial ownership of 5,440,884 common shares of Core Laboratories Inc., representing 11.6% of the class. The filing shows sole voting power over 4,942,266 shares and sole dispositive power over 5,440,884 shares. The filer certifies the position is held in the ordinary course of business and not for the purpose of changing or influencing control of the issuer. No group affiliations, subsidiaries, or additional arrangements are reported.
Form 4 filed on 08/05/2025 discloses two insider transactions by Mark D. Tattoli, Senior VP, General Counsel & Secretary of Core Laboratories Inc. (CLB).
- Exercise of Restricted Shares (Code M): 250 common shares were acquired at $0 on 08/01/2025 as previously granted restricted stock vested. Beneficial ownership rose to 16,393.621 direct shares after the exercise.
- Tax Withholding (Code F): 99 shares were withheld at $10.53 per share to satisfy tax obligations related to the vesting event.
Net result is an increase of 151 direct shares. The filer also reports 20 shares held in a custodial account and 1,694.842 shares in the company 401(k) plan. Following the transactions, Tattoli continues to hold 2,150 unvested restricted shares with multi-year vesting schedules.
No open-market sales or purchases occurred; activity reflects routine vesting and associated tax withholding. Given the small size relative to CLB’s float and market capitalization, the filing is immaterial to the company’s valuation but provides insight into ongoing equity compensation for senior management.
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