Form 4 Filing for Lisa M. Dumont at Cabot Corp

This filing details a transaction by Lisa M. Dumont, VP, Controller & CAO of Cabot Corp. On June 12, 2026, Dumont acquired 3.982 phantom stock units of common stock, with a transaction value of $87.65 per share. Following this transaction, Dumont holds 742.6524 shares. The acquired units are part of the Corporation's Supplemental 401(k) Plan and will be settled upon retirement or termination of employment. The filing was signed by Jennifer Lombardi under power of attorney for Dumont on June 16, 2026.