John Miller
Partner
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John is a partner in our Insurance and Asset Management and Mergers and Acquisitions practices, based in New York. He brings more than 25 years of financial services experience, spanning strategy, M&A, transformation, operations, and governance.

His work focuses on connecting strategy with execution, drawing on extensive experience in both executive leadership and advisory roles.

Before joining Oliver Wyman, John served as Global Chief Operating Officer of BNY Investments and Wealth Management, where he helped shape business strategy and oversee the operating infrastructure supporting the organization. He previously held senior leadership roles at BNY, including Head of M&A and Head of Strategy for the Investment Management business.

Earlier in his career, John advised financial services clients at Boston Consulting Group and began his professional career as an M&A and capital markets attorney at Sullivan & Cromwell in New York.

Double Quotes
I am passionate about translating strategy into action: shaping priorities, designing operating models, standing up practical change programs, and bringing teams together around complex business objectives

John brings extensive experience across the full M&A lifecycle, from strategic assessment and due diligence to negotiation, execution, and post-merger integration.

He helps organizations identify and pursue acquisition opportunities that create lasting value while building the leadership alignment and support needed for successful execution. He also brings significant governance experience, having served on 25 boards over the past decade.

John holds a Bachelor of Arts, Phi Beta Kappa, and a Juris Doctor with honors from Duke University, as well as an MBA in finance and economics from Columbia Business School.

Outside of work, he enjoys golf, squash, padel, cooking with family and friends, and traveling.