Cabot Corp (CBT) SVP and General Counsel acquires 922 phantom stock units

Rhea-AI Filing Summary

Cabot Corporation senior vice president and general counsel Karen A. Kalita reported an insider equity transaction involving derivative securities. On 12/31/2025, she acquired 922.4094 phantom stock units tied to Cabot common stock at a price of $66.28 per unit. Each phantom unit represents a 1-for-1 claim on a share of common stock and was granted under the company’s supplemental 401(k) plan, to be settled when she retires or otherwise leaves the company. Following this transaction, she beneficially owns 5,247.3392 phantom stock units directly.

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^*

Kalita Karen A

(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)
	SVP and General Counsel

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		922.4094		(2)	(2)	Common Stock	922.4094	$66.28	5,247.3392	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	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).
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FAQ

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

The filing shows that senior vice president and general counsel Karen A. Kalita acquired 922.4094 phantom stock units linked to Cabot common stock on 12/31/2025.

At what price were the Cabot Corp phantom stock units acquired?

The 922.4094 phantom stock units were acquired at a price of $66.28 per unit, as reported in the derivative securities table.

How many Cabot Corp phantom stock units does the insider own after the transaction?

After the reported transaction, Karen A. Kalita beneficially owns 5,247.3392 phantom stock units, held in a direct ownership capacity.

What does 1-for-1 mean for the Cabot Corp phantom stock units?

The explanation states a 1-for-1 relationship, meaning each phantom stock unit corresponds to one share of Cabot common stock for settlement purposes.

Under what plan were the Cabot Corp phantom stock units granted?

The filing notes that the phantom stock units were acquired under Cabot Corporation's supplemental 401(k) plan and are to be settled when the reporting person retires or otherwise terminates service.

When will the Cabot Corp phantom stock units be settled for the reporting person?

The explanation states that the phantom stock units are to be settled upon the reporting person's retirement or other termination of service.