Rockefeller Capital Management Appoints Dr. Lena Mass-Cresnik as Head of AI Strategy
New York, December 3, 2025
Rockefeller Capital Management (“Rockefeller” or “the Firm”), today announced the appointment of Dr. Lena Mass-Cresnik, a respected industry leader with more than 20 years of experience in technology strategy, business intelligence, and digital transformation, as Head of AI Strategy. Most recently, she served as Global Head of Generative AI Strategy & Acceleration at Amazon Web Services (“AWS”).
In this newly created role, Dr. Mass-Cresnik will lead the development and integration of AI-driven initiatives across Rockefeller to deliver greater efficiency, accelerate growth, and elevate the client experience. Reporting to Mark Alexander, Chief Technology, Operations, and Transformation Officer, she will collaborate with senior leaders across the Firm’s business and functional areas to enhance Rockefeller’s technology capabilities and platform.
“A highly accomplished and deeply experienced leader, Lena will be an outstanding asset to the team as we continue to embed AI deeper into the fabric of our Firm,” said Greg Fleming, President and Chief Executive Officer of Rockefeller Capital Management. “Her contributions will be critical as we continue on our path of growth and deliver a best-in-class experience to our clients.”
“Lena’s appointment reflects our commitment to harnessing leading-edge technology to deliver positive outcomes for clients,” said Mark Alexander, Chief Technology, Operations, and Transformation Officer at Rockefeller Capital Management. “Her deep expertise in AI strategy and innovation will be instrumental to accelerating the integration of advanced capabilities across the Firm.”
Prior to joining Rockefeller, Dr. Mass-Cresnik held senior leadership positions at AWS, Moelis & Company, Charles Schwab, and BlackRock, where she focused on technology strategy, business intelligence analytics, innovation, and digital transformation. She holds a Ph.D. in Innovation and Technology Management from the University of Oxford and an M.S. in Policy & Management from Harvard University.
The appointment of Dr. Mass-Cresnik reflects Rockefeller’s continued investment in technology and innovation to deliver differentiated solutions and exceptional service to clients.
About Rockefeller Capital Management
Rockefeller Capital Management was established in 2018 as a leading independent financial advisory services firm. Originally founded in 1882 as the family office of John D. Rockefeller, the Firm has evolved to offer strategic advice to ultra- and high-net-worth individuals and families, institutions, and corporations from offices in 32 markets throughout the United States, as well as an office in London. As of October 31, 2025, the Firm was responsible for $191 billion in client assets across its three businesses, Rockefeller Global Family Office, Rockefeller Asset Management and Rockefeller Global Investment Banking.
The information was prepared by Rockefeller Capital Management for informational purposes only and does not constitute an offer to sell or a solicitation of an offer to buy interests in any Rockefeller Capital Management investment vehicle, product or service.
Rockefeller Capital Management is the marketing name of Rockefeller Capital Management L.P. and its affiliates. Investment advisory, asset management and fiduciary activities are performed by the following affiliates of Rockefeller Capital Management: Rockefeller & Co. LLC, Rockefeller Trust Company, N.A., The Rockefeller Trust Company (Delaware) and Rockefeller Financial LLC, as the case may be.
Client Assets refers to assets under management, brokerage assets, and assets under administration.
©2025 Rockefeller Capital Management. All rights reserved. Does not apply to sourced material. Products and services may be provided by various affiliates of Rockefeller Capital Management.