IBM

Chief Sustainability Officer 

As IBM’s Chief Sustainability Officer, Christina leads the use of hybrid cloud and AI to accelerate progress toward sustainability across IBM’s operations, supply chain, products, and services. Christina previously led IBM’s multibillion-dollar Sustainability Software business, which provided enterprise applications and industry solutions designed to reduce costs, waste, and emissions. Christina also sits on IBM’s AI Ethics Board.

Emerging Tech and Partnerships Lead, Chief Sustainability Office

Carolyn is the Emerging Technology and Partnerships Lead, Chief Sustainability Office at IBM. In this role, Carolyn leads strategic external partnerships that drive impact for both business value and sustainability initiatives. Carolyn has a background in Chemistry and previously worked in strategy consulting. She has experience working across key industries including tech, semiconductor, and industrial manufacturing. Carolyn is based in Raleigh, NC. 

Director, ESG Assistant Controller

Denise is the ESG Assistant Controller at IBM. IBM’s ESG Controllership is responsible for mandatory ESG reporting and disclosures, acting as a key business partner to the sustainability function and other stakeholders, as well as establishing a strong management system for the company's ESG activities. Prior to this role, Denise had various finance and accounting roles, with over 15 years of experience. Most recently, Denise was the Director, Accounting Policy & External Reporting. Her team was responsible for worldwide accounting policies and preparation and review of SEC filings. Denise was also in IBM’s Investor Relations department. Previously, Denise spent nine years at Deloitte. Beginning her career in the assurance practice, followed by two years in Deloitte's National Office Accounting Services group focusing on revenue, leases, and leading the business combinations team.