Teo Sow Hang, Chief Accounting Officer and Treasurer of Core Laboratories Inc. /DE/ (NYSE: CLB), filed a Form 4 on August 4, 2026, disclosing restricted share vestings and related tax-withholding disposals that occurred on August 1, 2026.

Key Highlights

  • Role: Teo Sow Hang is identified in the filing as CAO and Treasurer of Core Laboratories Inc. /DE/
  • Vesting transactions: Two restricted share grants vested on August 1, 2026, with 240 shares and 200 shares acquired at $0 per share (transaction code M)
  • Tax withholding disposals: 108 shares and 90 shares were disposed of on August 1, 2026, at $10.64 per share (transaction code F)
  • Resulting ownership: Following all reported transactions, Sow Hang directly held 8,535.334 shares of common stock
  • Remaining restricted shares: Sow Hang holds 6,250 and 6,490 restricted shares (across multiple grants) in derivative securities following the reported transactions
  • Vesting schedule: Restricted shares vest annually over six years on the anniversary of the grant date, subject to continuous service

Restricted Share Vestings and Withholding Details for Core Laboratories CAO

According to the filing, Teo Sow Hang reported four transactions in common stock of Core Laboratories Inc. /DE/ on August 1, 2026. Two transactions (code M) reflect the vesting and acquisition of restricted shares: 240 shares acquired at $0 and 200 shares acquired at $0. Two additional transactions (code F) reflect shares withheld for tax purposes: 108 shares disposed of at $10.64 per share and 90 shares disposed of at $10.64 per share.

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, provided the reporting person remains in continuous service on each such vesting date." Following all four transactions, Sow Hang's direct beneficial ownership in common stock stood at 8,535.334 shares, as reported in the filing.

In Table II, the filing discloses that after the two vesting events, Sow Hang retains 6,250 restricted shares and 6,490 restricted shares in separate derivative security lines, with the filing noting that "multiple restricted share grants are included in this total." The form was signed by Mark D. Tattoli as Attorney-in-Fact on August 4, 2026.

What Was Disclosed

The filing disclosed two restricted share vestings totaling 440 shares and two tax-withholding disposals totaling 198 shares, all on August 1, 2026, leaving Sow Hang with direct ownership of 8,535.334 common shares and remaining restricted share grants totaling 12,740 shares across multiple awards.