Cabot director granted 30.6 phantom stock units

Cabot Corp director Douglas G. DelGrosso received additional phantom stock units as dividend-equivalent compensation, modestly increasing his deferred equity-based holdings.

Rhea-AI Filing Summary

CABOT CORP (CBT) reported that director Douglas G. DelGrosso acquired 30.628 Phantom Stock Units on September 11, 2026 as a grant under the Non-Employee Director's Deferral Plan. Each unit is tied 1-for-1 to a share of common stock, increasing his phantom stock holdings to 5,195.5819 units. These units represent dividend equivalents and will be settled after his board service ends or according to his distribution election. No Rule 10b5-1 trading plan is reported for this transaction.

Insider Trade Summary

Grant/Award: 30.628 shares

Grant/Award 1 txn

Insider DELGROSSO DOUGLAS G

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Phantom Stock Units F1, F2	30.628	$79.68	$2K

Holdings After Transaction: Phantom Stock Units — 5,195.5819 contracts (Direct)

Footnotes (2)

1. F1. 1 for 1
2. F2. Represents dividends paid on phantom stock units acquired under the Corporation's Non-Employee Director's Deferral Plan and will be settled either upon the reporting person's termination of service as a director or in accordance with the distribution election of the reporting person, whichever first occurs.

Key Figures

Phantom Stock Units acquired: 30.6280 units Price per Phantom Stock Unit: $79.68 per unit Total Phantom Stock Units after transaction: 5,195.5819 units +1 more

4 metrics

Phantom Stock Units acquired 30.6280 units Grant to director on September 11, 2026

Price per Phantom Stock Unit $79.68 per unit Value used for the September 11, 2026 grant

Total Phantom Stock Units after transaction 5,195.5819 units Director’s direct phantom holdings after the grant

Underlying common stock per unit 1 share per unit 1-for-1 linkage of Phantom Stock Units to common stock

Key Terms

Phantom Stock Units, Non-Employee Director's Deferral Plan, distribution election

3 terms

Phantom Stock Units financial

"Represents dividends paid on phantom stock units acquired under the"

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.

Non-Employee Director's Deferral Plan financial

"under the Corporation's Non-Employee Director's Deferral Plan and"

distribution election financial

"in accordance with the distribution election of the reporting person"

FAQ

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

What insider transaction did CBT report for director Douglas G. DelGrosso?

Cabot Corp reported that director Douglas G. DelGrosso acquired 30.628 Phantom Stock Units on September 11, 2026 as a grant under the Non-Employee Director's Deferral Plan, credited as dividend equivalents linked to Cabot common stock.

How many phantom stock units does the CBT director hold after this transaction?

After the September 11, 2026 grant, Douglas G. DelGrosso holds a total of 5,195.5819 Phantom Stock Units directly, all linked on a 1-for-1 basis to Cabot Corp common stock.

What are the key terms of the phantom stock units reported by CBT?

The Phantom Stock Units are tied 1-for-1 to Cabot Corp common stock and represent dividends paid on previously acquired phantom units. They will be settled after the director’s termination of service or in line with his distribution election, whichever occurs first.

Was the CBT insider transaction made under a Rule 10b5-1 trading plan?

No. The filing indicates that no Rule 10b5-1 trading plan applies to this transaction, meaning the grant of 30.628 Phantom Stock Units was not reported as being executed under a pre-arranged trading plan.

Does the CBT director’s phantom stock unit grant involve any immediate cash transaction?

The filing describes the 30.628-unit increase as dividends paid on phantom stock units under the deferral plan, to be settled in the future, indicating it functions as deferred equity-linked compensation rather than an immediate cash trade.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 09/14/2026 - 05:03 PM Accepted by SEC EDGAR 09/14/2026 - 05:00 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^*

DELGROSSO DOUGLAS G

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/11/2026

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)	09/11/2026		A		30.628		(2)	(2)	Common Stock	30.628	$79.68	5,195.5819	D

Explanation of Responses:

1. 1 for 1

2. Represents dividends paid on phantom stock units acquired under the Corporation's Non-Employee Director's Deferral Plan and will be settled either upon the reporting person's termination of service as a director or in accordance with the distribution election of the reporting person, whichever first occurs.

	By: Jennifer Lombardi, pursuant to a power of attorney from Doug G. Del Grosso	09/14/2026
	** 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)