[Form 4] CABOT CORP Insider Trading Activity

Rhea-AI Filing Summary

Cabot Corporation reported insider equity activity for its Executive Vice President and CFO, Erica McLaughlin, on a Form 4. On 11/19/2025, she acquired 8,283 shares of Cabot common stock at $0 and an additional 6,943 shares at $0, increasing her direct holdings. The filing also shows a disposition of 2,259 shares at $59.76 per share. After these transactions, she directly owned 77,782 shares and indirectly held 1.6508 shares through the corporation’s 401(k) plan.

The disclosure also records a grant of an employee stock option for 30,998 shares of common stock with an exercise price of $59.76 per share, expiring on 11/18/2035. These options vest over three years: 30% on November 19, 2026, 30% on November 19, 2027, and 40% on November 19, 2028. The filing notes that the 6,943-share award consists of performance-based units earned for fiscal year 2025, of which 5,021 units remain subject to time-based vesting.

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^*

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)
11/19/2025

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
Common Stock	11/19/2025		A		8,283	A	$0	73,098	D
Common Stock	11/19/2025		A		6,943(1)	A	$0	80,041	D
Common Stock	11/19/2025		F		2,259	D	$59.76	77,782	D
Common Stock								1.6508	I	Through the Trustee for the Corporation's 401(k) Plan

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
Employee Stock Option (Right to Buy)	$59.76	11/19/2025		A		30,998		(2)	11/18/2035	Common Stock	30,998	$0	30,998	D

Explanation of Responses:

1. Consists of performance based units earned on the basis of the Corporation's performance in fiscal year 2025, of which 5,021 remain subject to time-based vesting.

2. The option vests over a three year period as follows: 30% on November 19, 2026, 30% on November 19, 2027 and 40% on November 19, 2028.

	By: Jennifer Lombardi, pursuant to a power of attorney from Erica McLaughlin	11/21/2025
	** 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 insider transactions did Cabot (CBT) report for its CFO?

The filing reports that Cabot’s Executive Vice President and CFO, Erica McLaughlin, acquired 8,283 shares and 6,943 shares of common stock at $0 per share and disposed of 2,259 shares at $59.76 on 11/19/2025.

How many Cabot (CBT) shares does the CFO own after these transactions?

After the reported transactions, Erica McLaughlin beneficially owned 77,782 Cabot common shares directly and 1.6508 shares indirectly through the corporation’s 401(k) plan.

What stock options were granted to the Cabot (CBT) CFO?

The filing shows a grant of an employee stock option for 30,998 shares of Cabot common stock with an exercise price of $59.76 per share, expiring on 11/18/2035. All 30,998 options are reported as beneficially owned following the transaction.

What is the vesting schedule for the new Cabot (CBT) stock options?

The option for 30,998 shares vests over three years: 30% on November 19, 2026, 30% on November 19, 2027, and 40% on November 19, 2028, as stated in the Explanation of Responses.

What are the performance-based units reported for Cabot (CBT) in this Form 4?

The filing notes that the 6,943 shares acquired consist of performance-based units earned based on Cabot’s performance in fiscal year 2025, and that 5,021 units from this award remain subject to time-based vesting.

What is the relationship of the reporting person to Cabot (CBT)?

The reporting person, Erica McLaughlin, is identified as an Officer of Cabot Corporation, serving as Executive Vice President, CFO, and she filed the Form 4 as a single reporting person.