CABOT CORPORATION REPORTS FOURTH QUARTER AND FISCAL YEAR 2026 RESULTS (Form 8-K)

CABOT CORPORATION REPORTS FOURTH QUARTER AND FISCAL YEAR 2026 RESULTS

Fourth Quarter 2026 Diluted earnings per share ("EPS") of $1.25 and Adjusted EPS of $1.61

Fiscal Year 2026 Diluted EPS of $4.02 and Adjusted EPS of $6.42

BOSTON (November 2, 2026)-- Cabot Corporation (NYSE: CBT) today announced results for its fourth quarter and fiscal year 2026.

Fiscal Year Highlights

Fourth Quarter Highlights

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Exhibit 99.1

Erica McLaughlin, Cabot President and Chief Executive Officer commented: "I am pleased by the strong execution of our teams during a fiscal year that was shaped by a difficult macroeconomic backdrop in many of our key end markets. We finished the year with a strong fourth quarter, delivering Adjusted EPS of $1.61, driven by robust performance in our Performance Chemicals segment. The segment delivered EBIT of $60 million in the quarter and $235 million for the fiscal year. Reinforcement Materials delivered segment EBIT of $87 million in the quarter and $379 million for the full year."

McLaughlin continued, "We also achieved an important milestone in our Battery Materials product line, delivering $43 million of EBITDA for fiscal 2026, a new high for the product line. Building on this momentum, we signed an agreement with the U.S. Department of Energy for a $50 million grant to support our expansion of domestic production of advanced conductive additives for batteries at our facilities in Louisiana and Texas. We expect these investments to strengthen our Battery Materials platform in North America and expand our capabilities to support growing demand for battery energy storage systems, electric vehicles, and other specialty battery applications. As I look ahead, I am excited about Cabot's prospects and our ability to build on our strong foundation in Battery Materials to drive long-term growth and shareholder value."

Fourth Quarter Financial Detail

For the fourth quarter of fiscal 2026, net income attributable to Cabot Corporation was $66 million ($1.25 per common share). Net income reflects an after-tax per share charge from certain items of $0.36, primarily related to charges for restructuring actions. Adjusted EPS for the fourth quarter of fiscal 2026 was $1.61 per share.

Segment Results

Reinforcement Materials - Fourth quarter fiscal 2026 EBIT in Reinforcement Materials decreased by $32 million compared to the fourth quarter of fiscal 2025. The decline in EBIT was primarily driven by lower gross profit per ton, which was partially offset by higher volumes.

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Exhibit 99.1

Gross profit per ton declined primarily due to the outcomes of our calendar year 2026 customer agreements and less favorable regional product mix. Volumes increased by 5% in the fourth quarter of fiscal 2026 as compared to the fourth quarter of fiscal 2025 driven by higher volumes in Asia Pacific and the Americas, including higher volumes from our capacity addition in Indonesia and our acquisition in Mexico.

Global and regional volume changes for Reinforcement Materials for the fourth quarter of fiscal 2026 as compared to the same quarter of the prior year are set forth in the table below:

Performance Chemicals - Fourth quarter fiscal 2026 EBIT in Performance Chemicals increased by $18 million compared to the fourth quarter of fiscal 2025 primarily due to higher gross profit per ton and increased volumes. The higher gross profit per ton was driven by favorable product mix and lower costs. Volumes increased in our battery materials and specialty carbons product lines in the fourth quarter of fiscal 2026 as compared to the fourth quarter of fiscal 2025.

Cash Performance - The Company ended the fourth quarter of fiscal 2026 with cash and cash equivalents of $254 million. During the fourth quarter of fiscal 2026, cash flows from operating activities were a source of $143 million. Uses of cash during the quarter included funding $10 million of higher net working capital due to higher raw material costs, $55 million in capital expenditures, $25 million for the payment of dividends and $45 million in share repurchases. We ended the fourth quarter with $1.5 billion in available liquidity and a net debt to EBITDA ratio of 1.4 times as of September 30, 2026.

Taxes - During the fourth quarter of fiscal 2026, the Company recorded tax expense of $38 million, resulting in an effective tax rate of 34%. The provision for income taxes included non-GAAP adjustments of $3 million which is primarily related to an increase in the valuation allowance on deferred tax assets. Our operating tax rate for the full year fiscal 2026 was 29%.

Outlook

Erica McLaughlin said, "I am honored and excited to take on the role of CEO for Cabot. Having been part of Cabot for many years, I have a deep appreciation for the strength of our businesses, the quality of our people and the differentiated positions we have built across our portfolio. I am energized by the opportunity to lead the company and build on this strong foundation as we enter our next phase of growth."

Commenting on the outlook, McLaughlin continued, "Looking ahead to fiscal 2027, we expect Adjusted EPS to be in the range of $6.15 to $6.75. We anticipate continuing to increase volumes within our key growth markets, such as battery materials and electronics, as well as with strategic customer accounts. We expect to maintain solid margins as we manage volatile energy

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Exhibit 99.1

input costs and competitive pressures. We remain focused on completing our previously announced restructuring actions, implementing optimization activities and investing in yield technology to improve the competitiveness of our network."

"While we continue to operate in a dynamic macroeconomic environment, I am confident in the strength of our businesses and our ability to execute. We anticipate continuing to generate strong operating cash flow and maintaining our balanced capital allocation framework that supports growth investments while continuing to return cash to shareholders. In addition, we remain focused on advancing our strategic growth priorities and maintaining commercial and operational discipline to deliver long-term value for our shareholders," McLaughlin concluded.

Earnings Call

The Company will host a conference call with industry analysts at 8:00 a.m. Eastern time on Tuesday, November 3, 2026. The call can be accessed through Cabot's investor relations website at http://investor.cabot-corp.com

About Cabot Corporation
Cabot Corporation (NYSE: CBT) is a global specialty chemicals and performance materials company headquartered in Boston, Massachusetts. The company is a leading provider of reinforcing carbons, specialty carbons, battery materials, engineered elastomer composites, inkjet colorants, masterbatches and conductive compounds, fumed metal oxides and aerogel. For more information on Cabot, please visit the company's website at cabotcorp.com. The Company regularly posts important information on its website and encourages investors and potential investors to consult the Cabot website regularly.