SEC Filing Summary

This filing details a transaction by Douglas G. Del Grosso, a director at Cabot Corp. The transaction involved the acquisition of 30.628 phantom stock units, with a price per unit of $79.68. These units are related to the company's Non-Employee Director's Deferral Plan and will be settled upon termination of service or as per the reporting person's distribution election. Following this transaction, Del Grosso holds 5195.5819 shares. The underlying security for these units is Cabot Corp's Common Stock. The transaction date was September 11, 2026.