Cabot sells $350M in 4.95% notes due 2029

Q: What debt offering did CBT complete on August 21, 2026?

Cabot Corporation completed an offering of $350 million aggregate principal amount of 4.950% senior notes due 2029, issued under a shelf registration statement on Form S-3ASR and an indenture with U.S. Bank Trust Company, National Association, as trustee.

Q: How will Cabot (CBT) use the proceeds from the $350 million notes?

Cabot intends to use the net proceeds to redeem $250 million of its 3.40% Senior Notes due September 2026, with the remaining funds used for working capital and other general corporate purposes, including potential repayment of commercial paper and borrowings under its multicurrency revolving credit facility.

Q: What is the interest rate and maturity of Cabot’s new senior notes (CBT)?

The new Cabot senior notes carry an interest rate of 4.950% and are due in 2029. They were issued as senior unsecured obligations under an existing indenture framework with U.S. Bank Trust Company, National Association, as trustee.

Q: Which existing Cabot (CBT) notes are expected to be redeemed with the new issuance?

Cabot plans to redeem its existing $250 million aggregate principal amount of 3.40% Senior Notes due September 2026 using a portion of the net proceeds from the new $350 million 4.950% senior notes due 2029.

Q: Under what registration statement were Cabot’s 2029 senior notes issued (CBT)?

The 4.950% senior notes due 2029 were issued under an automatically effective shelf registration statement on Form S-3ASR (Registration Statement No. 333-276078) under the Securities Act of 1933, as amended.

Cabot Corporation (CBT) completed the issuance and sale of $350 million aggregate principal amount of 4.950% senior notes due 2029.

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Form Type

8-K

Rhea-AI Filing Summary

Cabot Corporation (CBT) completed the issuance and sale of $350 million aggregate principal amount of 4.950% senior notes due 2029. These Notes were issued under an automatically effective shelf registration statement on Form S-3ASR and a Base Indenture dated June 22, 2022, as supplemented by a Second Supplemental Indenture dated August 21, 2026.

Cabot intends to use the net proceeds to redeem its $250 million aggregate principal amount of 3.40% Senior Notes due September 2026, with the remaining proceeds allocated to working capital and other general corporate purposes, which may include repayment of commercial paper and any amounts outstanding under its multicurrency revolving credit facility.

8-K Event Classification

2 items: 8.01, 9.01

2 items

Item 8.01 Other Events Other

Voluntary disclosure of events the company deems important to shareholders but not covered by other items.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, or exhibit attachments filed with this report.

Key Figures

New senior notes principal amount: $350 million New senior notes interest rate: 4.950% Existing notes to be redeemed: $250 million +2 more

5 metrics

New senior notes principal amount $350 million Aggregate principal amount of 4.950% senior notes due 2029 issued by Cabot

New senior notes interest rate 4.950% Coupon on Cabot’s senior notes due 2029

Existing notes to be redeemed $250 million Aggregate principal amount of 3.40% Senior Notes due September 2026 targeted for redemption

Existing notes interest rate 3.40% Coupon on Cabot’s Senior Notes due September 2026

Registration Statement Number 333-276078 Form S-3ASR shelf registration statement used for the notes offering

Key Terms

senior notes, indenture, shelf registration statement, Second Supplemental Indenture, +1 more

5 terms

senior notes financial

"completed the issuance and sale of $350 million aggregate principal amount of 4.950% senior notes due 2029"

Senior notes are a type of loan that a company borrows from investors, promising to pay it back with interest. They are called "senior" because in case the company faces financial trouble, these lenders are paid back before others. This makes senior notes safer for investors compared to other types of loans or bonds.

indenture financial

"The Notes were issued pursuant to an indenture (the “Base Indenture”), between Cabot and U.S. Bank Trust Company"

An indenture is a legal agreement between a company that borrows money by issuing bonds and the people who buy those bonds. It explains the rules the company must follow, like paying back the money and keeping certain financial promises. This document helps both sides understand their rights and responsibilities.

shelf registration statement regulatory

"registered pursuant to an automatically effective shelf registration statement on Form S-3ASR"

A shelf registration statement is a document a company files with regulators that allows it to sell shares or bonds quickly when it’s a good time to raise money. It’s like having a pre-approved plan ready so the company can act fast without going through lengthy paperwork each time they want to sell, making fundraising more flexible.

Second Supplemental Indenture financial

"as supplemented by the Second Supplemental Indenture, dated as of August 21, 2026"

multicurrency revolving credit facility financial

"including, at Cabot’s discretion, repayment of commercial paper and amounts, if any, outstanding under its multicurrency revolving credit facility"

A multicurrency revolving credit facility is a bank line of credit that lets a company borrow, repay and borrow again up to a set limit in more than one currency, much like a business credit card that works in different countries. It matters to investors because it provides short‑term cash flexibility, helps manage currency needs and interest costs, and reduces the risk of running short of funds — all of which affect a company’s liquidity and financial stability.

FAQ

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

What debt offering did CBT complete on August 21, 2026?

Cabot Corporation completed an offering of $350 million aggregate principal amount of 4.950% senior notes due 2029, issued under a shelf registration statement on Form S-3ASR and an indenture with U.S. Bank Trust Company, National Association, as trustee.

How will Cabot (CBT) use the proceeds from the $350 million notes?

Cabot intends to use the net proceeds to redeem $250 million of its 3.40% Senior Notes due September 2026, with the remaining funds used for working capital and other general corporate purposes, including potential repayment of commercial paper and borrowings under its multicurrency revolving credit facility.

What is the interest rate and maturity of Cabot’s new senior notes (CBT)?

The new Cabot senior notes carry an interest rate of 4.950% and are due in 2029. They were issued as senior unsecured obligations under an existing indenture framework with U.S. Bank Trust Company, National Association, as trustee.

Which existing Cabot (CBT) notes are expected to be redeemed with the new issuance?

Cabot plans to redeem its existing $250 million aggregate principal amount of 3.40% Senior Notes due September 2026 using a portion of the net proceeds from the new $350 million 4.950% senior notes due 2029.

Under what registration statement were Cabot’s 2029 senior notes issued (CBT)?

The 4.950% senior notes due 2029 were issued under an automatically effective shelf registration statement on Form S-3ASR (Registration Statement No. 333-276078) under the Securities Act of 1933, as amended.

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

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Accepted by SEC EDGAR 08/21/2026 - 04:12 PM EDT

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): August 21, 2026

CABOT CORPORATION

(Exact Name of Registrant as Specified in Its Charter)

Delaware

001-05667

04-2271897

(State or Other Jurisdiction

of Incorporation)

(Commission

File Number)

(IRS Employer

Identification No.)

2 Seaport Lane, Suite 1400, Boston,

Massachusetts

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:

☐	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	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 8.01 Other Events.

On August 21, 2026, Cabot Corporation (“Cabot”) completed the issuance and sale of $350 million aggregate principal amount of 4.950% senior notes due 2029 (the “Notes”).

The offering of the Notes was registered pursuant to an automatically effective shelf registration statement on Form S-3ASR under the Securities Act of 1933, as amended (Registration Statement No. 333-276078) (the “Registration Statement”), that was filed with the Securities and Exchange Commission on December 15, 2023.

The Notes were issued pursuant to an indenture (the “Base Indenture”), between Cabot and U.S. Bank Trust Company, National Association, as trustee (the “Trustee”) dated as of June 22, 2022, as supplemented by the Second Supplemental Indenture (the “Second Supplemental Indenture”), dated as of August 21, 2026, between Cabot and the Trustee. Cabot is filing the Second Supplemental Indenture as Exhibit 4.2, to this Current Report on Form 8-K. In order to furnish as an exhibit for incorporation by reference into the Registration Statement, Cabot is filing the opinion of Ropes & Gray LLP relating to the validity of the Notes as Exhibit 5.1 to this Current Report on Form 8-K

Cabot intends to use the net proceeds of the offering to redeem its $250 million aggregate principal amount of 3.40% Senior Notes due September 2026, with the remainder being used for working capital and other general corporate purposes (including, at Cabot’s discretion, repayment of commercial paper and amounts, if any, outstanding under its multicurrency revolving credit facility).

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.


Exhibit 4.1		Indenture, dated June 22, 2022, between Cabot Corporation and U.S. Bank Trust Company, National Association (incorporated by reference to Exhibit 4.1 to the Current Report on Form 8-K filed on June 22, 2022).

Exhibit 4.2		Second Supplemental Indenture, dated August 21, 2026, between Cabot Corporation and U.S. Bank Trust Company, National Association, including the form of Global Note attached as Annex A thereto.

Exhibit 5.1		Opinion of Ropes & Gray LLP as to the validity of the Notes.

Exhibit 23.1		Consent of Ropes & Gray LLP (included in Exhibit 5.1).

Exhibit 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/ Erica McLaughlin
		Erica McLaughlin
		Executive Vice President and Chief Financial Officer

Date: August 21, 2026

Source: View Original Filing on SEC EDGAR

Filing Exhibits & Attachments

5 documents