Cabot VP Dumont reports 367-share payment transaction

Available on EDGAR 11/12/2026 - 08:47 AM EST Accepted by SEC EDGAR 11/12/2026 - 08:47 AM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Cabot Corp. (CBT) VP, Controller & CAO Lisa M. Dumont reported 367 common shares delivered or withheld for payment of exercise price or tax liability on November 10, 2026, at a reported $72.19 per share. Afterward, Dumont reported 11,521 shares held directly. The Form 4 does not affirm a Rule 10b5-1 plan.

Insider Trade Summary

Exercise Price or Tax Liability: 367 shares

Exercise Price or Tax Liability 1 txn

Insider Dumont Lisa M

Role VP, Controller & CAO

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	367	$72.19	$26K
Holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 11,520.62 shares (Direct); Common Stock — 1,639.54 shares (Indirect, Through the Trustee for the Corporation's 401(k) Plan)

Holdings Before and After: Common Stock, 11,887.62 to 11,520.62 shares (Direct)

Key Figures

Shares delivered or withheld: 367 shares Reported per-share price: $72.19 per share Direct shares held after transaction: 11,521 shares +1 more

4 metrics

Shares delivered or withheld 367 shares November 10, 2026

Reported per-share price $72.19 per share Transaction reported for November 10, 2026

Direct shares held after transaction 11,521 shares As of November 10, 2026

Indirect shares held through 401(k) Plan trustee 1,640 shares As of November 10, 2026

Key Terms

exercise price, tax liability, Rule 10b5-1 plan

3 terms

exercise price financial

"payment of exercise price or tax liability"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

tax liability financial

"payment of exercise price or tax liability"

Rule 10b5-1 plan financial

"The Form 4 does not affirm a Rule 10b5-1 plan"

A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many CBT shares did Lisa M. Dumont deliver or withhold?

Lisa M. Dumont reported 367 shares delivered or withheld for payment of exercise price or tax liability on November 10, 2026, at a reported $72.19 per share. The Form 4 does not affirm a Rule 10b5-1 plan.

How many shares did Lisa M. Dumont report holding after the CBT transaction?

She reported 11,521 shares held directly after the transaction, plus 1,640 shares held indirectly through the trustee for the corporation’s 401(k) Plan, as of November 10, 2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Dumont Lisa M

(Last) (First) (Middle)

C/O CABOT CORPORATION

TWO SEAPORT LANE, SUITE 1400

(Street)

BOSTON MASSACHUSETTS 02210

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
CABOT CORP [ CBT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP, Controller & CAO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
11/10/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	11/10/2026		F		367	D	$72.19	11,520.62	D
Common Stock								1,639.54	I	Through the Trustee for the Corporation's 401(k) Plan

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	By: Mazda Cintron, pursuant to a power of attorney from Lisa M. Dumont	11/11/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)