[Form 4] CABOT CORP Insider Trading Activity

Rhea-AI Filing Summary

Raffiq Nathoo, a Cabot Corporation director, reported an acquisition of 21.8029 phantom stock units on 09/11/2025 that represent dividends on units held under the company's Non-Employee Director's Deferral Plan. Those units convert 1-for-1 into common stock and are tracked as 21.8029 underlying shares at an indicated per-share value of $81.47. After this transaction the reporting person beneficially owns 3,969.1023 shares directly. The units will be settled either when Mr. Nathoo leaves the board or according to his distribution election, whichever occurs first.

Positive

• Director ownership increased to 3,969.1023 shares following the settlement of phantom stock units, aligning director compensation with company equity
• Transaction arises from the company's deferral plan, indicating structured, plan-governed compensation rather than opportunistic market trading

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: Routine director deferred-compensation settlement recorded; no indication of sale or unusual trading.

This filing documents a standard accrual/settlement of phantom stock units under the Non-Employee Director's Deferral Plan. The transaction is characterized as dividends paid on phantom units that convert 1-for-1 into common shares and will be settled upon termination of service or per the director's distribution election. The filing increases the director's direct beneficial ownership to 3,969.1023 shares but reflects a small, routine compensation-related adjustment rather than an open-market purchase or sale.

Securities Analyst

TL;DR: Non-cash, compensation-driven issuance; limited investor impact based on disclosed size.

The reported 21.8029-unit increment (priced at $81.47 per underlying share in the form) arises from dividend reinvestment or similar accrual under the director deferral plan. This increases disclosed direct ownership modestly to 3,969.1023 shares. The nature and timing of settlement are governed by plan rules, and the transaction code indicates acquisition (A) of derivative-based units rather than an open-market equity trade. No proceeds, sales, or hedging arrangements are disclosed.

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^*

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)
09/11/2025

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)	09/11/2025		A		21.8029		(2)	(2)	Common Stock	21.8029	$81.47	3,969.1023	D

Explanation of Responses:

1. 1 for 1

2. Represents dividends paid on phantom stock units acquired under the Corporation's Non-Employee Director's Deferral Plan and will be settled 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: Jennifer Lombardi, pursuant to a power of attorney from Raffiq Nathoo	09/15/2025
	** 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.
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 did Raffiq Nathoo report on Form 4 for CABT?

He reported acquisition of 21.8029 phantom stock units (dividends on units) that convert 1-for-1 into common stock, increasing direct beneficial ownership to 3,969.1023 shares.

When was the transaction dated on the Form 4 for CABT?

The transaction date is 09/11/2025 and the form was signed on 09/15/2025 by Jennifer Lombardi under power of attorney.

What is the reported per-share value associated with the phantom units?

The filing shows $81.47 per underlying share associated with the reported 21.8029 units.

How will the phantom stock units be settled?

The units will be settled upon the reporting person's termination of service as a director or according to his distribution election, whichever occurs first.

Does this Form 4 show any open-market purchases or sales by the director?

No. The filing reflects acquisition of phantom stock units under the Non-Employee Director's Deferral Plan, not an open-market trade.