Cabot Corp (NYSE: CBT) director adds 2,298 shares, now holds 15,079

Rhea-AI Filing Summary

Cabot Corporation director Doug G. Del Grosso reported acquiring 2,298 shares of Cabot common stock on January 8, 2026. The shares were recorded at a price of $0.00 per share, indicating they were received without cash consideration, such as through an equity award or similar arrangement. Following this transaction, Del Grosso directly holds 15,079 shares of Cabot common stock. The filing indicates the transaction was made by a single reporting person in his capacity as a director.

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^*

DELGROSSO DOUGLAS G

(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)
01/08/2026

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
Common Stock	01/08/2026		A		2,298	A	$0	15,079	D

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

Explanation of Responses:

	By: Jennifer Lombardi, pursuant to a power of attorney from Doug G. Del Grosso	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).
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 insider transaction did Cabot Corp (CBT) report for Doug G. Del Grosso?

Cabot Corp reported that director Doug G. Del Grosso acquired 2,298 shares of Cabot common stock on January 8, 2026, in a transaction coded "A" for acquisition.

At what price were the new Cabot Corp (CBT) shares acquired by the director?

The 2,298 Cabot common shares acquired by director Doug G. Del Grosso were reported at a price of $0.00 per share.

How many Cabot Corp (CBT) shares does Doug G. Del Grosso own after this transaction?

After the reported acquisition, Doug G. Del Grosso directly owns 15,079 shares of Cabot Corp common stock.

What is the role of Doug G. Del Grosso at Cabot Corp (CBT)?

Doug G. Del Grosso is reported as a director of Cabot Corp in the insider filing.

Was the Cabot Corp (CBT) insider transaction reported as direct or indirect ownership?

The filing shows that the 15,079 shares held after the transaction are owned under direct (D) ownership by Doug G. Del Grosso.

Does the Form 4 for Cabot Corp (CBT) include any derivative securities for Doug G. Del Grosso?

No derivative securities are listed for Doug G. Del Grosso in the provided Table II section of the Form 4 excerpt.