[Form 4] CABOT CORP Insider Trading Activity

Rhea-AI Filing Summary

Erica McLaughlin, Executive Vice President and Chief Financial Officer of Cabot Corporation (CBT), reported an acquisition of phantom stock units under the company’s supplemental 401(k) plan. On 09/30/2025 she was issued 146.6723 phantom stock units that represent 146.6723 shares of common stock at a unit price of $76.05. After the transaction she beneficially owns 9,085.4575 shares. The phantom units are to be settled in common stock upon the reporting person’s retirement or other termination of service. The Form 4 was submitted by power of attorney and dated 10/02/2025.

Positive

• Grant was disclosed promptly via Form 4 with clear transaction date 09/30/2025
• Units are deferred and will be settled upon retirement/termination, indicating no immediate sale pressure

Negative

• None.

Insights

Governance & Insider Transactions Specialist

Routine executive compensation issuance; no immediate sale or disposition.

The filing documents an acquisition of 146.6723 phantom stock units for Erica McLaughlin on 09/30/2025, increasing her reported beneficial ownership to 9,085.4575 shares. The units are part of a supplemental 401(k) plan and are deferred until retirement or termination, indicating no immediate market impact from a sale.

The use of a power of attorney to file the Form 4 is noted; the form was executed on 10/02/2025. This is a standard compliance disclosure required under Section 16.

Executive Compensation Analyst

Phantom units reflect deferred compensation rather than purchased shares.

The report states the phantom stock units were granted under the corporation’s supplemental 401(k) plan and will be settled in common stock upon retirement or termination, which classifies them as deferred compensation rather than an immediate equity purchase.

Reported unit price is $76.05; the report lists the underlying common stock amount as 146.6723 shares. The disclosure clarifies vesting/settlement conditions but does not provide additional timing or conversion mechanics beyond retirement/termination.

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).

1. Name and Address of Reporting Person^*

McLaughlin Erica

(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)
	Executive Vice President, CFO

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2025

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)	09/30/2025		A		146.6723		(2)	(2)	Common Stock	146.6723	$76.05	9,085.4575	D

Explanation of Responses:

1. 1 for 1

2. The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service.

	By: Mazda Cintron, pursuant to a power of attorney from Erica McLaughlin	10/02/2025
	** 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 Erica McLaughlin report on Form 4 for CBT?

She reported the acquisition of 146.6723 phantom stock units on 09/30/2025, representing 146.6723 shares of common stock at a unit price of $76.05.

How many shares does Erica McLaughlin beneficially own after the transaction?

The Form 4 reports she beneficially owns 9,085.4575 shares following the reported transaction.

Under what plan were the phantom stock units issued?

The units were acquired under the corporation’s supplemental 401(k) plan and are to be settled upon retirement or other termination of service.

When was the Form 4 filed for this transaction?

The Form 4 was signed by power of attorney and dated 10/02/2025.

Do the phantom stock units represent immediate equity or deferred compensation?

They are deferred compensation (phantom stock units) that will be settled in common stock upon retirement or termination.