Form 4 Filing for Mark Damian Tattoli

This filing details transactions made by Mark Damian Tattoli, SVP, General Counsel & Secretary of Core Laboratories Inc. On October 1, 2026, Tattoli disposed of 276 shares of Common Stock at a price of $9.76 per share, resulting in 28088.621 shares remaining. Additionally, Tattoli acquired 700 shares of Common Stock with no price specified, increasing the post-transaction shares to 28364.621. The filing also reports the disposal of 700 Restricted Shares, which vest annually over six years, with the underlying security being Common Stock. Post-transaction, 250 Restricted Shares remain. Tattoli also holds Common Stock indirectly through a custodial account (20 shares) and a 401(k) Plan (1694.842 shares).