Cabot Corp (CBT) CEO Sean Keohane Exercises Options, Sells 2,779 Shares

What Happened
Sean D. Keohane, President, CEO and Director of Cabot Corp (CBT), exercised options to acquire 2,779 shares and immediately sold those 2,779 shares in an open‑market transaction on August 24, 2026. The exercise is reported at $50.00 per share (total reported cost $138,950) and a separate derivative line is reported at $0.00; the sale was at $85.50 per share for gross proceeds of $237,605. This sequence is effectively an exercise-and-sell (cashless-style) transaction — a sale rather than a new purchase exposure.

Key Details

• Transaction date: August 24, 2026 (Form 4 filed Aug 26, 2026) — filing appears timely.
• Exercise: 2,779 shares at $50.00/share (reported cost $138,950) and an additional derivative entry of 2,779 shares at $0.00.
• Sale: 2,779 shares sold in the open market at $85.50/share for proceeds of $237,605.
• Shares owned after transaction: not specified in the provided filing.
• Footnote: F1 notes 137,674 shares were subject to the option; the option vested over a three‑year schedule (30% Nov 10, 2018; 30% Nov 10, 2019; 40% Nov 10, 2020).
• Transaction codes: M = option exercise/conversion, S = sale.

Context
When executives exercise options and immediately sell the resulting shares, it commonly reflects exercising vested awards to realize value or cover exercise/tax costs rather than a new bullish purchase signal. The filing shows an exercise followed by an immediate sale of the same number of shares, consistent with a cashless or simultaneous exercise-and-sell settlement.