Giacomo Sonnino

Giacomo is a Managing Director at Charlesbank Capital Partners, where he drives operational improvements and value creation throughout the portfolio. He has been a member of Charlesbank’s Portfolio Resources Group since 2023.

Prior to Charlesbank, Giacomo was a Vice President at Jabil, where he led supply chain & procurement solutions and services and a global enterprise transformation focused on cloud, digital and advanced analytics. Previously, he spent 13 years at McKinsey, where he was a Partner advising clients on business and operational transformations, restructurings, advanced analytics and growth strategies. During his tenure at McKinsey, he also served as Chief Operating Officer, North America, of QuantumBlack, McKinsey’s data and analytics center of excellence.

Giacomo holds an MBA from the Tuck School of Business at Dartmouth and an MSc in Engineering from Università di Roma “La Sapienza.”

Firm bio:

Founded in 1998, Charlesbank Capital Partners is a leading middle-market private investment firm with approximately $24 billion of assets under management as of June 30, 2026. Employing a thematic approach, the firm invests across its core sectors: business & consumer services, healthcare, industrials and technology. Charlesbank draws on sector expertise and long-term perspective to identify opportunities and partner with strong management teams to unlock value and drive sustainable growth. With its complementary and well-integrated private equity and credit strategies, the firm provides flexible capital solutions tailored to the needs of its portfolio companies. Charlesbank has offices in Boston and New York.