Management Executive Committee

Comprised of our CEO, CFO and the individuals responsible for our segments, regions and select functions, this team is responsible for the management of the company as a whole.

Our management executive committee sets our strategic direction and implements strategies both to maximize long-term shareholder value and achieve shorter-term objectives, defines priorities, establishes corporate-wide policy and manages governance and enterprise-level decisions. The individual members of the Management Executive Committee are responsible for the management and operations of our businesses, functions and regional operations.

Sean KeohaneSean D. Keohane

President and Chief Executive Officer

Sean Keohane is president and chief executive officer of Cabot Corporation and a member of the Board of Directors. Since joining Cabot in 2002, Sean has held numerous key management positions including president of the Reinforcement Materials segment, president of the Performance Chemicals segment and president of the Asia Pacific region. Prior to joining Cabot, Sean worked for Pratt & Whitney, a division of United Technologies, in a variety of general management positions. Sean earned his MBA from Harvard University and a BS in Finance from Providence College. Sean also serves on the Board of Directors of The Chemours Company (NYSE: CC) the American Chemistry Council and is a Trustee of Dexter Southfield School and the Boston Latin School Association.


Patricia HubbardPatricia Hubbard

Senior Vice President and Chief Technology Officer

Patricia Hubbard joined Cabot in 2018. Prior to joining Cabot, Patricia worked for Avery Dennison as vice president of R&D for the Label and Graphic Materials division in North America. Prior to Avery Dennison, she worked for PolyOne Corporation and General Electric. Throughout her career, she has garnered extensive knowledge of materials science and formulated solutions that have driven new product development and technology innovation. Patricia is a certified Lean Six Sigma Black Belt, and earned her PhD in polymer science from the University of Akron and a BS in Chemistry from Case Western Reserve University. She also serves on the Board of Directors of NAATBatt International.


Aaron JohnsonAaron Johnson

Senior Vice President, Global Business Services

Aaron Johnson joined Cabot in 2005 and has held a variety of leadership positions, most recently as vice president and general manager of Cabot’s specialty carbons business within the Performance Additives segment and senior vice president and president of Cabot's previous Purification Solutions segment. He was also vice president and general manager for the EMEA specialty compounds business, vice president for business development in the Asia Pacific (AP) region, and vice president for the AP region for the Purification Solutions segment. Before joining Cabot, Aaron worked for The Boston Consulting Group. He earned his MBA from the Massachusetts Institute of Technology’s Sloan School of Management and a BS in Geology from Bates College.


Brian BerubeKaren Kalita

Senior Vice President, General Counsel

Karen Kalita joined Cabot in 2008, and has since held several key positions in the law department, including chief legal counsel to our Reinforcement Materials segment and previous Purification Solutions segment and senior legal counsel to our previous Advanced Technologies segment. Before joining Cabot, Karen was a corporate attorney at WilmerHale LLP in Boston, a global law firm. Karen earned her JD degree from Harvard Law School and a BA from the University of Arizona.


Bart KalksteinBart Kalkstein

Executive Vice President and President, Reinforcement Materials Segment and Americas Region

Bart Kalkstein joined Cabot in 2005. Since joining the company, Bart has held several key management positions within the company, most recently as vice president of corporate strategy and development. He was also vice president of global business operations and general manager of global emission control solutions for the former Purification Solutions segment, vice president of business operations and executive director of marketing and business strategy for the Performance Chemicals segment, and general manager of the aerogel business. Prior to joining Cabot, Bart worked for Boston Consulting Group. Bart earned his MBA from Harvard University and a BSE in Civil Engineering and Operations Research at Princeton University.


Erica McLaughlinErica McLaughlin

Executive Vice President, Chief Financial Officer and Head of Corporate Strategy

Erica McLaughlin joined Cabot in 2002 and has held a variety of roles within the finance organization and Cabot’s global businesses, most recently as vice president of business operations for the Reinforcement Materials segment and general manager of the tire business. Since joining the company, she has held a number of senior leadership positions including vice president of investor relations and corporate communications, as well as global director of strategy, planning and finance for Cabot’s core segment. Prior to joining Cabot, Erica worked for KPMG, LLP in their audit services division. She is a Certified Public Accountant and earned an MBA and a BS in accounting from Boston College. She also serves on the Board of Directors of Azenta Life Sciences (Nasdaq: AZTA) and the Advisory Board of FM Global.


Martin O'Neill

Martin J. O'Neill

Senior Vice President, Safety, Health and Environment (SH&E); Chief Sustainability Officer

Martin O'Neill joined Cabot in 2000. Since joining Cabot, Martin has held several key positions including director of SH&E for the former Cabot supermetals business, plant general manager for the company's tantalum manufacturing operations in Boyertown, Pennsylvania, USA and general manager of the TANCO mining operation in Manitoba, Canada. Prior to joining Cabot, Martin was director of SH&E for North and South America with AMP Incorporated/Tyco Electronics and worked in consulting for 15 years. Martin earned his MS in Environmental Science from Drexel University and a BA in Ecology from Rutgers College. He is a member of the American Industrial Hygiene Association and serves on the Board of Trustees for Boston Harbor Now. In addition, he is a member of the Advisory Board for HomeStart, Inc. and the Norwell Visiting Nurses Association (NVNA).


Art Wood

Arthur (Art) T. Wood

Senior Vice President and Chief Human Resources Officer

Art Wood joined Cabot in 2017. Prior to joining Cabot, Art worked for Thermo Fisher Scientific as group vice president of Human Resources, Specialty Diagnostics Group. During his tenure at Thermo Fisher Scientific he held several senior human resources (HR) leadership roles of increasing responsibility, overseeing large teams of HR professionals globally. In addition to Thermo Fisher Scientific, Art has garnered experience building and leading strategic HR organizations at large, multinational corporations including Progress Software and Sun Microsystems. Art earned his MBA from the University of Colorado Denver and his BA from the University of Maryland.


Jeff ZhuJeff Zhu

Executive Vice President and President, Performance Chemicals Segment and Asia Pacific Region

Jeff Zhu joined Cabot in 2012. Prior to joining the company, he spent 18 years with Rhodia (and its predecessor Rhone-Poulenc) where he served in a variety of regional and global business leadership roles, including Asia Pacific regional commercial director, regional vice president and general manager of Novecare, and vice president and global director of electronics and catalysis. He served on the Board of Directors of the Association of International Chemical Manufacturers (AICM). Jeff's most recent experience before joining Cabot was with Asia Pacific Resources International Holding Limited (APRIL), a multi-billion USD privately owned global paper and pulp company, where he served as head of global sales. Jeff earned his M.Sc in Chemistry from National University of Singapore and a distinction MBA from the University of Hull, UK.