8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 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): September 11, 2026

CABOT CORPORATION

(Exact Name of Registrant as Specified in Its Charter)

Delaware

(State or Other Jurisdiction of Incorporation)

1-5667

04-2271897

(Commission

File Number)

(IRS Employer
Identification No.)


TWO SEAPORT LANE, SUITE 1400,
BOSTON, Massachusetts		02210-2019
(Address of Principal Executive Offices)		(Zip Code)

(617) 345-0100

(Registrant’s Telephone Number, Including Area Code)

(Former Name or Former Address, if Changed Since Last Report)

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 communications 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 communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Securities Exchange Act of 1934:


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

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

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. ☐

Item 5.02

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

On September 11, 2026, the Board of Directors elected Steven J. Delahunt, the Company’s Vice President and Treasurer, Chief Financial Officer of the Company, effective October 1, 2026, replacing Erica McLaughlin who, as previously reported, has been elected President and Chief Executive Officer of the Company, effective October 1, 2026. Mr. Delahunt will serve in an interim capacity while the Company continues its search process to identify a new Chief Financial Officer.

Mr. Delahunt joined Cabot in 2010 as Vice President and Treasurer and from July 2016 through January 2026 he also held the position of Vice President of Investor Relations.

While Mr. Delahunt serves as interim Chief Financial Officer, he will receive additional compensation in the form of a monthly cash stipend in the amount of $35,000 per month.

There is no arrangement or understanding between Mr. Delahunt and any other person pursuant to which he was appointed interim Chief Financial Officer. There are no transactions involving Mr. Delahunt requiring disclosure under Item 404(a) of Regulation S-K of the SEC.

Item 7.01.

Regulation 7.01 Disclosure.

On September 15, 2026, the Company issued a press release regarding the Company’s management transition. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

The information furnished in this Item 7.01, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any other filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Item 9.01

Financial Statements and Exhibits

(d) Exhibits


99.1		Press release issued by Cabot Corporation on September 15, 2026

104		Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

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: September 15, 2026