Cabot Corp (CBT) director reports changes in phantom stock unit balance

Rhea-AI Filing Summary

Cabot Corporation director Raffiq Nathoo filed an amended insider report updating his holdings of cash-settled phantom stock units tied to Cabot common stock. On 12/31/2025, he reported the disposition of 3,383.8519 phantom stock units referencing the same number of Cabot common shares at $66.28 per share, in line with his distribution election under the Non-Employee Director's Deferral Plan. He also reported acquiring 358.3283 additional phantom stock units on the same date at $66.28, bringing his directly held phantom stock balance to 1,284.065 units. These phantom units are paid in cash and are designed to mirror the value of Cabot’s stock rather than representing actual 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

OMB APPROVAL

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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)
01/05/2026

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

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

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	$66.28(1)	12/31/2025		C			3,383.8519	(2)	(2)	Common Stock	3,383.8519	$66.28	925.7367	D
Phantom Stock Units	$66.28(1)	12/31/2025		A		358.3283		(3)	(3)	Common Stock	358.3283	$66.28	1,284.065	D

Explanation of Responses:

1. 1 for 1

2. Disposition of phantom stock units in accordance with the distribution election of the reporting person under the Non-Employee Director's Deferral Plan.

3. 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.

Remarks:

This Form 4/A amends a Form 4 originally filed January 5, 2026 that reported the acquisition of phantom stock units to also include the disposition of phantom stock units in accordance with the distribution election of the reporting person under the Non-Employee Director's Deferral Plan.

	By: Mazda Cintron, pursuant to a power of attorney from Raffiq Nathoo	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 activity did Cabot Corp (CBT) disclose in this Form 4/A?

The filing shows director Raffiq Nathoo updated his holdings of phantom stock units tied to Cabot Corp common stock, including a disposition and a new grant on 12/31/2025 under the Non-Employee Director's Deferral Plan.

How many Cabot Corp-related phantom stock units were disposed of in this filing?

The report discloses the disposition of 3,383.8519 phantom stock units, each tied on a 1-for-1 basis to Cabot Corp common stock and valued at $66.28 per share.

Did the Cabot Corp (CBT) director receive any new phantom stock units?

Yes. On 12/31/2025, the director reported acquiring 358.3283 phantom stock units at a reference price of $66.28 per share under the Non-Employee Director's Deferral Plan.

What is the director’s remaining phantom stock balance reported for Cabot Corp (CBT)?

After the reported transactions, the director directly beneficially owns 1,284.065 phantom stock units tied to Cabot Corp common stock.

How are the Cabot Corp (CBT) phantom stock units settled for the director?

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

Why was this Cabot Corp (CBT) Form 4/A filed as an amendment?

The amendment adds the disposition of phantom stock units on 12/31/2025 in accordance with the director’s distribution election under the Non-Employee Director's Deferral Plan to a Form 4 that was originally filed on 01/05/2026.