Global law firm Greenberg Traurig added Chris Buck as a shareholder in its London private equity practice. He joins from his role as general counsel and head of operations at Spheres, a European private investment firm.
At Spheres, which was founded by principals from Sequoia Heritage, TowerBrook Capital Partners, HIG Capital, Goldmans Sachs and Flix, Buck oversaw legal, compliance and operational matters including cross-border fund structuring; venture, growth equity and private equity investments; and general partner stake sales. Prior to joining Spheres, he spent more than a decade at global law firms where he advised on complex private equity transactions for clients including TA Associates, TowerBrook Capital Partners, HIG Capital, Apollo Global Management, All Seas Capital and KKR.
Buck’s appointment marks the second significant hire for the team in recent weeks, following the arrival of Tom Rodzoch from Weil, Gotshal & Manges in May 2025, as the firm continues to expand its pan-European private equity offering. The pair join Sava Savov, who launched the London private equity practice in September 2024.
“Chris’ blend of legal insight and commercial acumen makes him well-positioned to support international clients navigating the evolving private capital landscape,” Richard A. Rosenbaum, executive chair of Greenberg Traurig. “As demand from our private capital clients continues to accelerate, the strategic additions we have made in London and across Europe, the Middle East and across the United States position us to deliver the sophisticated, cross-border advice our clients need. Their collective experience, spanning in-house leadership and private practice, aligns perfectly with what our clients are looking for: pragmatic, strategic legal advisors with a deep understanding of the investment lifecycle.”
“We are scaling up our private capital capabilities in London to reflect the pace of dealmaking and the increasingly complex needs of our international client base,” Savov said. “I am delighted to be working with Chris again; he combines institutional pedigree with operational fluency and sharp commercial judgement, and is a strategic and cultural fit, bringing invaluable experience that complements our expanding team and global platform. We are excited to welcome him during this phase of growth.”
“I am delighted to be joining Greenberg Traurig at a time of such energy and momentum’ they are building a phenomenal platform. The firm’s dynamic approach, entrepreneurial culture and strong international offering are a great match for my experience and ambitions,” Buck said. “I look forward to working with my new colleagues across the network and partnering with clients, including the fantastic team at Spheres, to support their growth and investment goals.”
“We are incredibly grateful for Chris’ invaluable contribution over the past couple of years,” Florian Kamps, partner and co-founder of Spheres, said. “Chris will continue to be a key advisor, and we look forward to working with him and the team at Greenberg going forward.”
