Mark Damian Tattoli, SVP, General Counsel and Secretary of Core Laboratories Inc. /DE/ (NYSE: CLB), filed a Form 4 on August 4, 2026, disclosing two transactions in common stock dated August 1, 2026.

Key Highlights

  • Vesting event: 250 restricted shares were converted to common stock on August 1, 2026, at a price of $0, via transaction code M.
  • Tax withholding: 99 shares of common stock were disposed of on August 1, 2026, at $10.64 per share, via transaction code F.
  • Direct ownership following transactions: 27,763.621 shares of common stock held directly.
  • Indirect holdings: 20 shares held in a custodial account and 1,694.842 shares held in a 401(k) Plan.
  • Remaining restricted shares: 950 restricted shares beneficially owned following the reported transactions, representing multiple restricted share grants per the filing.
  • Vesting schedule: The restricted shares vest annually over six years on the anniversary of the grant date, provided the reporting person remains in continuous service on each vesting date.

Tattoli's August 2026 Restricted Share Vesting at Core Laboratories

According to the filing, Mark Damian Tattoli, serving as SVP, General Counsel and Secretary of Core Laboratories Inc. /DE/, reported two transactions in common stock on August 1, 2026. The first transaction, coded M, reflects the acquisition of 250 shares of common stock at $0, representing the vesting of restricted shares. The second transaction, coded F, reflects the disposal of 99 shares at $10.64 per share, which the filing indicates is consistent with shares withheld to satisfy tax obligations upon vesting.

Following these transactions, the filing reports that Tattoli directly holds 27,763.621 shares of common stock. In addition, 20 shares are held indirectly through a custodial account, and 1,694.842 shares are held indirectly through a 401(k) Plan. The filing also discloses that 950 restricted shares remain beneficially owned, representing multiple restricted share grants.

The filing explains that the restricted shares vest annually over six years on the anniversary of the grant date in the amount specified in the award agreement, conditioned on the reporting person remaining in continuous service on each vesting date. Tattoli signed the filing on August 4, 2026.

What Was Disclosed

The filing discloses a restricted share vesting of 250 shares and a disposal of 99 shares for tax withholding purposes by Core Laboratories' SVP, General Counsel and Secretary on August 1, 2026, along with resulting beneficial ownership positions.