Sean D. Keohane - Nov 19, 2025 Form 4 Insider Report for CABOT CORP (CBT)

Role
President and CEO, Director
Signature
By: Jennifer Lombardi, pursuant to a power of attorney from Sean D. Keohane
Stock symbol
CBT
Transactions as of
Nov 19, 2025
Transactions value $
-$617,799
Form type
4
Date filed
11/21/2025, 05:00 PM
Previous filing
Nov 12, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Keohane Sean D President and CEO, Director C/O CABOT CORPORATION, TWO SEAPORT LANE, SUITE 1400, BOSTON By: Jennifer Lombardi, pursuant to a power of attorney from Sean D. Keohane 2025-11-21 0001435737

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CBT Common Stock Award $0 +32.6K +9.3% $0.00 384K Nov 19, 2025 Direct
transaction CBT Common Stock Award $0 +30.9K +8.06% $0.00 414K Nov 19, 2025 Direct F1
transaction CBT Common Stock Tax liability -$618K -10.3K -2.49% $59.76 404K Nov 19, 2025 Direct
holding CBT Common Stock 13.9K Nov 19, 2025 Through the Trustee for the Corporation's 401(k) Plan

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction CBT Employee Stock Option (Right to Buy) Award $0 +122K $0.00 122K Nov 19, 2025 Common Stock 122K $59.76 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Consists of performance based units earned on the basis of the Corporation's performance in fiscal year 2025, of which 22,630 remain subject to time-based vesting.
F2 The option vests over a three year period as follows: 30% on November 19, 2026, 30% on November 19, 2027 and 40% on November 19, 2028.