Cabot Corp officer Form 4 shows 1,606-share grant, tax sale

Rhea-AI Filing Summary

Cabot Corporation (CBT) officer Lisa M. Dumont, VP, Controller & CAO, reported equity transactions in company stock on a Form 4 dated 11/19/2025. She acquired 1,606 shares of common stock at $0 and an additional 901 performance-based units at $0, reflecting awards tied to the corporation's fiscal 2025 performance, of which 637 units remain subject to time-based vesting. She also disposed of 200 shares of common stock at $59.76 in a transaction coded as tax withholding (code F). After these transactions, she directly beneficially owned 11,715 shares of Cabot common stock and indirectly held 1,598.5907 shares through the trustee for the corporation's 401(k) plan.

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
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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 MA 02210

(City) (State) (Zip)

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

3. Date of Earliest Transaction (Month/Day/Year)
11/19/2025

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

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

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

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	11/19/2025		A		1,606	A	$0	11,014	D
Common Stock	11/19/2025		A		901(1)	A	$0	11,915	D
Common Stock	11/19/2025		F		200	D	$59.76	11,715	D
Common Stock								1,598.5907	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:

1. Consists of performance based units earned on the basis of the Corporation's performance in fiscal year 2025, of which 637 remain subject to time-based vesting.

	By: Jennifer Lombardi, pursuant to a power of attorney from Lisa M. Dumont	11/21/2025
	** 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.
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FAQ

What insider activity did Cabot Corp (CBT) report for Lisa M. Dumont?

Lisa M. Dumont, VP, Controller & CAO of Cabot Corp, reported acquisitions and a small disposition of Cabot common stock on 11/19/2025, including stock awards and shares withheld.

How many Cabot Corp (CBT) shares did the officer acquire on 11/19/2025?

On 11/19/2025, she acquired 1,606 shares of Cabot common stock at $0 and 901 performance-based units at $0, tied to fiscal 2025 performance.

What is the nature of the 901 Cabot Corp performance-based units reported?

The 901 performance-based units were earned based on Cabot's fiscal year 2025 performance, and 637 of those units remain subject to time-based vesting conditions.

How many Cabot Corp (CBT) shares were disposed of by the officer and at what price?

She disposed of 200 shares of Cabot common stock at a price of $59.76 per share in a transaction coded F, typically indicating shares withheld to cover taxes.

What is Lisa M. Dumont’s Cabot Corp (CBT) share ownership after these transactions?

Following the reported transactions, she directly owned 11,715 shares of Cabot common stock and indirectly held 1,598.5907 shares through the trustee for Cabot's 401(k) plan.

What role does Lisa M. Dumont hold at Cabot Corp (CBT)?

She serves as an officer of Cabot Corp with the title VP, Controller & CAO, as disclosed in the Form 4.