William F. Masterson III, Senior Vice President at Cabot Corporation, filed a Form 4 on November 12, 2026, reporting the disposition of 284 shares of Cabot Corp common stock on November 10, 2026.

Key Highlights

  • Reporting person: William F. Masterson III, identified as Senior Vice President of Cabot Corporation
  • Transaction: 284 shares of common stock disposed of (transaction code F) on November 10, 2026
  • Price per share: $72.19
  • Remaining holdings: 6,951 shares of common stock held directly following the transaction
  • Filing signed by: Mazda Cintron, acting pursuant to a power of attorney from William F. Masterson III, on November 11, 2026

Masterson's November 2026 Share Disposition at Cabot Corporation

According to the Form 4 filed with the U.S. Securities and Exchange Commission, William F. Masterson III, a Senior Vice President at Cabot Corporation (NYSE:CBT), reported a single transaction involving the disposition of 284 shares of Cabot Corp common stock. The transaction was recorded on November 10, 2026, with the shares disposed of at a price of $72.19 each under transaction code F, which the filing records in Table I covering non-derivative securities.

Following the reported transaction, the filing states that Masterson directly beneficially owns 6,951 shares of Cabot Corp common stock. No derivative securities transactions were reported in Table II of the filing. The form was filed as an individual filing by one reporting person and does not indicate that the transaction was made pursuant to a Rule 10b5-1(c) plan, as the corresponding checkbox was not checked.

The form was signed by Mazda Cintron on November 11, 2026, pursuant to a power of attorney from William F. Masterson III. The date of earliest transaction listed is November 10, 2026, and no amendment date is noted, indicating this is an original filing.

What Was Disclosed

The filing reports the disposal of 284 shares of Cabot Corp common stock by Senior Vice President William F. Masterson III at $72.19 per share on November 10, 2026, leaving him with a direct beneficial ownership of 6,951 shares.