Cabot Corporation adjusts board class structure

Cabot Corporation reported upcoming changes to its board structure around the 2026 Annual Meeting of Stockholders.

Rhea-AI Filing Summary

Cabot Corporation reported upcoming changes to its board structure around the 2026 Annual Meeting of Stockholders. The current terms of directors Juan Enriquez and William C. Kirby will end at that meeting. The board has nominated existing director Thierry Vanlancker, whose current term runs to the 2028 annual meeting, to stand for election at the 2026 Annual Meeting for a new term extending to the 2029 annual meeting.

To enable this change, on January 8, 2026, Mr. Vanlancker submitted a conditional resignation effective immediately before the 2026 Annual Meeting, contingent on his reappointment to a new term that will then expire at the 2026 Annual Meeting. His resignation and reappointment are described as being solely to rebalance the three board classes so they are approximately equal in size.

8-K Event Classification

Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers

1 item

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers Governance

Key personnel changes including departures, elections, or appointments of directors and executive officers.

FAQ

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

What board changes did Cabot Corporation (CBT) disclose?

Cabot Corporation disclosed that the terms of directors Juan Enriquez and William C. Kirby will expire at the 2026 Annual Meeting of Stockholders and that director Thierry Vanlancker has been nominated for election at that meeting for a term expiring at the 2029 annual meeting.

What is changing about Thierry Vanlancker’s role on Cabot Corporation’s (CBT) board?

Thierry Vanlancker, currently serving a term that expires at the 2028 annual meeting, has been nominated for election at the 2026 Annual Meeting of Stockholders for a term expiring at the 2029 annual meeting, with a conditional resignation and reappointment process to facilitate this change.

Why did Thierry Vanlancker submit a conditional resignation from Cabot Corporation’s (CBT) board?

Thierry Vanlancker submitted a conditional resignation effective immediately prior to the 2026 Annual Meeting of Stockholders, conditioned on his reappointment, solely to rebalance the members of the board into three classes of approximately equal size.

When do the terms of Cabot Corporation (CBT) directors Juan Enriquez and William C. Kirby end?

The terms of Cabot Corporation directors Juan Enriquez and William C. Kirby will expire at the company’s 2026 Annual Meeting of Stockholders.

What is the purpose of rebalancing Cabot Corporation’s (CBT) board into three classes?

The filing states that the resignation and reappointment of Thierry Vanlancker will be effected solely for the purpose of rebalancing the members of the board into three classes of approximately equal size.

Who signed the Cabot Corporation (CBT) report about the board changes?

The report was signed on behalf of Cabot Corporation by Karen A. Kalita, Senior Vice President and General Counsel.

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

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Accepted by SEC EDGAR 01/14/2026 - 04:34 PM Learn about SEC filing dates

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): January 8, 2026

Cabot Corporation

(Exact name of Registrant as Specified in Its Charter)

Delaware	1-5667	04-2271897
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)
2 Seaport Lane, Suite 1400, Boston, MA		02210-2019
(Address of Principal Executive Offices)		(Zip Code)

Registrant’s Telephone Number, Including Area Code: (617) 345-0100

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

	☐	Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
	☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
	☐	Pre-commencement communication pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
	☐	Pre-commencement communication pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $1 par value per share	CBT	New York Stock Exchange

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

The terms of Juan Enriquez and William C. Kirby, currently members of the board of directors (the “Board”) of Cabot Corporation (the “Company”), will expire at the Company’s 2026 Annual Meeting of Stockholders (the “2026 Annual Meeting”). The Board has nominated Thierry Vanlancker, a director whose term currently expires at the annual meeting of stockholders in 2028, for election at the Company’s 2026 Annual Meeting, with a term to expire at the annual meeting of stockholders in 2029. To effect this nomination, on January 8, 2026, Mr. Vanlancker submitted a conditional resignation as a director, effective immediately prior to the 2026 Annual Meeting and conditioned upon his reappointment to the Board as a director whose term expires at the 2026 Annual Meeting. The resignation and reappointment of Mr. Vanlancker will be effected solely for the purpose of rebalancing the members of the Board into three classes of approximately equal size.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

CABOT CORPORATION

By: /s/ Karen A. Kalita

Name: Karen A. Kalita

Title: Senior Vice President and General Counsel

Date: January 14, 2026