Masterson William F III 4

What Happened
William F. Masterson III, Senior Vice President of Cabot Corp (CBT), was granted 2.824 derivative shares (phantom stock units) on 2026-06-12 at a per-unit value of $87.65, a total grant value of roughly $247. This was an award/grant (derivative acquisition), not an open-market purchase or sale.

Key Details

• Transaction date: 2026-06-12; filing date: 2026-06-16 (timely filed).
• Grant: 2.824 derivative shares at $87.65 per unit; total value ≈ $247.
• Shares owned after transaction: Not disclosed in the filing.
• Transaction type/code: A (award/acquisition); reported as a derivative (phantom stock unit).
• Footnotes: F1 indicates a 1-for-1 conversion; F2 notes these 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.

Context
This was a compensation-related award of phantom stock units that are settled later (not an immediate issuance of common shares). Such grants reflect company compensation practices rather than a direct buy/sell signal and do not necessarily indicate the insider’s view of the stock.