Cabot SEC Filings

Matthew Forster Wood, Senior Vice President of Cabot Corporation (CBT), reported a non‑derivative acquisition tied to phantom stock units on 09/11/2025. The filing shows 1.4119 phantom stock units were acquired at an attributable value of $81.47 each, increasing his beneficial ownership to 257.0493 shares of common stock. The filing explains these units represent dividends paid on phantom stock under the company’s Supplemental 401(k) Plan and will be settled when the reporting person retires or leaves employment. The Form 4 was signed by Jennifer Lombardi under power of attorney on 09/15/2025.

Erica McLaughlin, Executive Vice President and CFO of Cabot Corporation (CBT), reported an acquisition on Form 4 dated 09/11/2025. The filing shows the receipt of 49.1022 phantom stock units credited as dividends under the company’s Supplemental 401(k) Plan; these units represent 49.1022 underlying shares at a reported per-share value of $81.47. After the transaction, McLaughlin beneficially owns 8,938.7852 shares directly. The phantom stock units are payable upon the reporting person’s retirement or other termination of employment, per the filer’s explanation. The Form 4 was signed via power of attorney on 09/15/2025.

Lisa M. Dumont, VP, Controller & CAO of Cabot Corporation (CBT), acquired phantom stock units on 09/11/2025 representing dividends paid on phantom stock units under the company's Supplemental 401(k) Plan. The Form 4 reports these units are to be settled in common stock upon the reporting person's retirement or other termination of employment. The filing shows 547.9886 shares (underlying amount) associated with the reported transaction and lists an attributable price reference of $81.47. The Form was signed by an attorney-in-fact on 09/15/2025.

Raffiq Nathoo, a Cabot Corporation director, reported an acquisition of 21.8029 phantom stock units on 09/11/2025 that represent dividends on units held under the company's Non-Employee Director's Deferral Plan. Those units convert 1-for-1 into common stock and are tracked as 21.8029 underlying shares at an indicated per-share value of $81.47. After this transaction the reporting person beneficially owns 3,969.1023 shares directly. The units will be settled either when Mr. Nathoo leaves the board or according to his distribution election, whichever occurs first.

Sean D. Keohane, President and CEO of Cabot Corporation (CBT), reported an acquisition of 241.6837 phantom stock units on 09/11/2025. The filing shows the phantom units have an attributed value of $81.47 per underlying share and correspond to 241.6837 shares of common stock. After the transaction, Mr. Keohane beneficially owns 43,997.1756 shares. The filing explains these units represent dividends paid on phantom stock units under the Corporation's Supplemental 401(k) Plan and will be settled upon the reporting person's retirement or termination of employment. The Form 4 was signed by Jennifer Lombardi under power of attorney on 09/15/2025.

Sean D. Keohane, President and CEO and a director of Cabot Corporation (CBT), reported option exercises and open-market sales on 08/14/2025. He exercised two employee stock options totaling 114,436 shares (26,455 at $49.26 and 87,981 at $50.46) and sold 114,436 shares in multiple transactions at weighted average prices disclosed for each tranche, with sale prices in the reported ranges of $78.570 to $79.740. After these transactions he beneficially owned 361,518 shares directly and an additional 13,842.5928 shares indirectly through the company 401(k) plan trustee, for a combined disclosed position.

Cabot Corporation (CBT) notice reports a proposed sale of 114,436 common shares, with an aggregate market value of $9,072,097.22, to be sold on 08/14/2025 through Fidelity Brokerage Services (NYSE). The filing shows the shares were acquired by exercise of options originally granted on 03/21/2016 (26,455 shares) and 11/11/2016 (87,981 shares) and that payment will be in cash. The filer states no securities of the issuer were sold by the same person in the past three months and attests they are not aware of undisclosed material adverse information about the issuer.