Cabot counsel Karen A. Kalita acquires plan units

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

Rhea-AI Filing Summary

Cabot Corporation SVP and General Counsel Karen A. Kalita acquired 44.8795 Phantom Stock Units on September 30, 2026, under the Corporation’s supplemental 401(k) plan. The units are to be settled upon her retirement or other termination of service. Her reported direct position after the transaction was 5,386.1563 Phantom Stock Units.

Insider Trade Summary

Grant/Award: 44.8795 shares

Grant/Award 1 txn

Insider Kalita Karen A

Role SVP and General Counsel

Type	Security	Shares	Price	Value
Grant/Award	Phantom Stock Units F1, F2	44.8795	$76.91	$3K

Holdings After Transaction: Phantom Stock Units — 5,386.1563 contracts (Direct)

Footnotes (2)

1. F1. 1 for 1
2. F2. 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.

Key Figures

Phantom Stock Units acquired: 44.8795 units Direct Phantom Stock Units after transaction: 5,386.1563 units Reported transaction price per unit: $76.9100 per unit +1 more

4 metrics

Phantom Stock Units acquired 44.8795 units September 30, 2026

Direct Phantom Stock Units after transaction 5,386.1563 units Reported following the September 30, 2026 transaction

Reported transaction price per unit $76.9100 per unit Phantom Stock Unit transaction on September 30, 2026

Relationship to Common Stock 1 for 1 Phantom Stock Units

Key Terms

Phantom Stock Units, supplemental 401(k) plan, 1 for 1

3 terms

Phantom Stock Units financial

"the reported phantom stock units"

Phantom stock units are company promises that pay a cash or stock-equivalent award tied to the firm’s share price or value growth, but they do not issue actual shares. Think of them as a bonus check that moves with the stock like a mirror rather than handing over an ownership slice. Investors care because these awards can affect a company’s future cash obligations, executive incentives and reported expenses without causing share dilution.

supplemental 401(k) plan financial

"acquired under the Corporation's supplemental 401(k) plan"

1 for 1 financial

"1 for 1"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many Phantom Stock Units did Cabot (CBT) SVP Karen A. Kalita acquire?

Karen A. Kalita acquired 44.8795 Phantom Stock Units on September 30, 2026. She is Cabot Corporation’s SVP and General Counsel, and her reported direct position afterward was 5,386.1563 Phantom Stock Units.

How are Cabot (CBT) Phantom Stock Units related to common stock?

The reported relationship is 1 for 1, with Common Stock identified as the underlying security.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/01/2026 - 03:48 PM Accepted by SEC EDGAR 10/01/2026 - 03:48 PM Learn about SEC filing dates

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^*

Kalita Karen A

(Last) (First) (Middle)

C/O CABOT CORPORATION

TWO SEAPORT LANE, SUITE 1400

(Street)

BOSTON MASSACHUSETTS 02210

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	SVP and General Counsel

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2026

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

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

4. If Amendment, Date of Original Filed (Month/Day/Year)

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)	09/30/2026		A		44.8795		(2)	(2)	Common Stock	44.8795	$76.91	5,386.1563	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 Karen A. Kalita	10/01/2026
	** 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.
* Form 4: SEC 1474 (03-26)