Cabot Corp (CBT) director reports phantom stock unit acquisition in Form 4

Rhea-AI Filing Summary

Cabot Corporation director Raffiq Nathoo reported an equity-related compensation transaction dated 12/31/2025. The filing shows the acquisition of 358.3283 phantom stock units, coded as an "A" (acquired) transaction, with a reference price of $66.28 per unit.

Following this transaction, Nathoo beneficially owns 1,284.065 phantom stock units on a direct basis. Each phantom stock unit is subject to a 1-for-1 relationship with Cabot common stock. The phantom stock will be settled in cash either when Nathoo’s service as a director ends or in line with his distribution election, whichever occurs first.

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^*

Nathoo Raffiq

(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)
12/31/2025

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

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
Phantom Stock Units	(1)	12/31/2025		A		358.3283		(2)	(2)	Common Stock	358.3283	$66.28	1,284.065	D

Explanation of Responses:

1. 1 for 1

2. The phantom stock will be settled in cash either upon the reporting person's termination of service as a director or in accordance with the distribution election of the reporting person, whichever first occurs.

	By: Mazda Cintron, pursuant to a power of attorney from Raffiq Nathoo	01/05/2026
	** 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.

FAQ

What insider transaction did Cabot Corp (CBT) report in this Form 4?

The filing reports that director Raffiq Nathoo acquired 358.3283 phantom stock units on 12/31/2025 as an equity-based compensation transaction.

How many phantom stock units does the Cabot Corp (CBT) director own after this transaction?

After the reported transaction, the director beneficially owns 1,284.065 phantom stock units, held on a direct basis.

What is the relationship between the phantom stock units and Cabot Corp (CBT) common stock?

Each phantom stock unit has a 1-for-1 relationship with Cabot Corp common stock, according to the explanation of responses.

At what price were the Cabot Corp (CBT) phantom stock units referenced in this Form 4?

The transaction lists a price of $66.28 per phantom stock unit for the 12/31/2025 acquisition.

How and when will the Cabot Corp (CBT) phantom stock units be settled?

The phantom stock will be settled in cash either upon the director’s termination of service or according to the director’s distribution election, whichever happens first.

What type of securities are reported in this Cabot Corp (CBT) Form 4?

The Form 4 reports derivative securities, specifically phantom stock units, which are cash-settled based on Cabot Corp common stock.