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

Reporting relationship: President and CEO, Director
Issuer ticker: CBT
Reported as of: 19 Nov 2025
Net transaction value: -$617,799
SEC form: 4
Accepted by SEC: 21 Nov 2025, 17:00:03 UTC
Prior SEC filing: 12 Nov 2025
Next SEC filing: 16 Dec 2025
Source filing: View source filing
Reporting owner signature: By: Jennifer Lombardi, pursuant to a power of attorney from Sean D. Keohane

Key filing fact

Sean D. Keohane filed Form 4 for CABOT CORP (CBT) on 21 Nov 2025.

Key facts

This page summarizes Sean D. Keohane's Form 4 filing for CABOT CORP (CBT).
4 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 21 Nov 2025, 17:00.

Change

Previous filing in this sequence was filed on 12 Nov 2025.
Current net transaction value: -$617,799.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001435737 Primary reporting owner

Keohane Sean D

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

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CBT transaction

Common Stock

Award

Transaction value: $0
Shares: +32,630
Change %: +9.3%
Price: $0.000000
Shares after: 383,540
Date: 19 Nov 2025
Ownership: Direct

CBT transaction

Common Stock

Award

Transaction value: $0
Shares: +30,932
Change %: +8.1%
Price: $0.000000
Shares after: 414,472
Date: 19 Nov 2025
Ownership: Direct
Footnotes: F1

CBT transaction

Common Stock

Tax liability

Transaction value: $617,799
Shares: -10,338
Change %: -2.5%
Price: $59.76
Shares after: 404,134
Date: 19 Nov 2025
Ownership: Direct

CBT holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 13,933
Date: 19 Nov 2025
Ownership: Through the Trustee for the Corporation's 401(k) Plan

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

CBT transaction Derivative

Employee Stock Option (Right to Buy)

Award

Transaction value: $0
Shares: +122,114
Change %
Price: $0.000000
Shares after: 122,114
Date: 19 Nov 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 122,114
Exercise price: $59.76
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote 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.

Footnote 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.