Cabot EVP and Reinforcement Materials President Kalkstein to retire; Wood appointed successor

CABOT CORP

Hobart Kalkstein will retire as EVP and President, Reinforcement Materials, effective Jan 5, 2026; steps down on June 15, 2025.
Matthew Wood appointed SVP and President, Reinforcement Materials segment, effective June 15, 2025.
Kalkstein remains in advisory capacity through retirement to ensure smooth transition.
Transition agreement extends option exercise period to 36 months and provides half salary during 12-month non-compete.

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Appointed

Matthew Wood

Senior Vice President and President, Reinforcement Materials Segment

CBT · CABOT CORP

Effective: 2025-06-15
Filed: Jun 03, 2025 23:59 UTC

The Board has appointed Matthew Wood a Senior Vice President of the Company, and Mr. Wood will succeed Mr. Kalkstein as President, Reinforcement Materials Segment.

Departed

Hobart C. Kalkstein

Executive Vice President and President, Reinforcement Materials Segment

CBT · CABOT CORP

Effective: 2025-06-15
Successor: Matthew Wood
Filed: Jun 03, 2025 23:59 UTC

On May 30, 2025, Hobart C. Kalkstein, Executive Vice President and President, Reinforcement Materials Segment of Cabot Corporation (the "Company"), informed the Company’s Board of Directors (the "Board") of his decision to step down from those positions, effective June 15, 2025.

Source: SEC EDGAR

accession 0001193125-25-133898

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