Cabot Corp (CBT) director Michelle Williams reports 2,298-share deferred award

Rhea-AI Filing Summary

Cabot Corporation director reports stock award under deferral plan. Director Michelle Elizabeth Williams acquired 2,298 shares of Cabot Corporation common stock on January 8, 2026, reported as an award at a price of $0 per share. Following this award, she beneficially owned 6,776 shares of Cabot common stock in total.

The filing notes that these shares have been deferred under Cabot's Non-Employee Directors' Deferral Plan, meaning the award is subject to the terms of that plan rather than delivered as immediately unrestricted shares.

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

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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^*

Williams Michelle Elizabeth

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
01/08/2026

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	01/08/2026		A		2,298(1)	A	$0	6,776	D

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. The shares have been deferred pursuant to Cabot's Non-Employee Directors' Deferral Plan.

	By: Jennifer Lombardi, pursuant to a power of attorney from Michelle Williams	01/12/2026
	** 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).
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FAQ

What insider transaction did Cabot Corp (CBT) report for Michelle Elizabeth Williams?

Cabot Corp reported that director Michelle Elizabeth Williams acquired 2,298 shares of Cabot common stock on January 8, 2026, at a reported price of $0 per share.

How many Cabot Corp (CBT) shares does Michelle Elizabeth Williams own after this transaction?

After the reported transaction, Michelle Elizabeth Williams beneficially owned 6,776 shares of Cabot Corporation common stock.

What is the nature of the stock award reported by Cabot Corp (CBT)?

The filing states that the 2,298 shares acquired by Michelle Elizabeth Williams have been deferred pursuant to Cabot's Non-Employee Directors' Deferral Plan.

Was the Cabot Corp (CBT) insider transaction a purchase or an award?

The transaction is coded as A for acquisition and shows a $0 per share price, indicating it is a stock award rather than an open-market purchase.

Does Michelle Elizabeth Williams hold her Cabot Corp (CBT) shares directly or indirectly?

The report lists direct (D) ownership for the 6,776 Cabot common shares beneficially owned after the transaction.

What plan governs the deferred shares for Cabot Corp (CBT) director Michelle Elizabeth Williams?

The filing explains that the shares have been deferred under Cabot's Non-Employee Directors' Deferral Plan, which governs how the award is deferred.