Keohane Sean D 4

What Happened
Sean D. Keohane, President and CEO (and Director) of Cabot Corp (CBT), was granted 305.563 derivative units on 2026-03-13 at an attributable value of $69.49 per unit, for a total value of approximately $21,234. The filing classifies this as an award/acquisition (derivative), not an open-market purchase or sale.

Key Details

• Transaction date and value: 2026-03-13; 305.563 units @ $69.49 each; total ≈ $21,234.
• Transaction type: Award/acquisition of derivative units (phantom stock units under a supplemental 401(k) plan).
• Shares owned after transaction: Not specified in the provided filing.
• Footnotes:
  • F1: 1-for-1 (each unit converts to one share)
  • F2: Units represent dividends paid on phantom stock units acquired under the Corporation's Supplemental 401(k) Plan and are to be settled upon the reporting person's retirement or termination.
• Filing timing: Report filed 2026-03-17 for a 2026-03-13 transaction (filed 4 days after the transaction). Form 4s are typically due within two business days, so this appears later than the standard deadline.

Context
This was a derivative/compensation award (phantom stock units) tied to Cabot's supplemental 401(k) benefits and not an open-market purchase. Phantom units generally track the value of company stock and are settled in cash or shares upon retirement/termination, so they reflect compensation mechanics rather than an immediate buy/sell market signal.