Masterson William F III 4

What Happened

• William F. Masterson III, Senior Vice President of Cabot Corp (CBT), was awarded 3.37 derivative units on 2026-03-13. The units are reported at $69.49 each, for a total reported value of $234. This was an award/acquisition (derivative) rather than an open-market purchase or sale.

Key Details

• Transaction date: 2026-03-13; Filing date: 2026-03-17 (filed within the normal Form 4 window).
• Transaction type/code: A (Grant/award or other acquisition) — derivative units, not an immediate transfer of common stock.
• Quantity/price/value: 3.37 units @ $69.49 = $234 (reported).
• Shares/units owned after transaction: not specified in the supplied details.
• Footnotes: F1 indicates a 1-for-1 relationship (one unit per share). F2 states these are 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 other termination of employment.

Context

• These are phantom/derivative units tied to Cabot's supplemental 401(k) benefits and are to be settled later, so they do not represent immediate share purchases or sales. Such awards are typically compensation/benefit-related rather than direct signals of trading intent.