King & Spalding‘s banking arm of its financial services regulation practice assists financial services clients of all sizes, from fintech start-ups to large international banks. Assistance varies from broker-dealer compliance advice and risk management, exhibiting knowledge of US and state regulators, to advice on AML and compliance advice and ’Buy Now, Pay Later’ schemes. Matthew Biben, a former federal prosecutor for SDNY, Kimberly A Prior and Russell Sacks, all located in New York, head up a team which sits within a special matters & government investigations practice, belying a strength in enforcement of the wider group. Prior joined the firm from Winston Taylor in October 2025, adding significant fintech experience, specifically in blockchain and cryptocurrency, to bolster this side of the practice. The consumer finance element of the group’s work includes credit offerings and regulation associated with credit cards and mortgages. Sacks is a key name to note regarding the regulation of private banks and wealth managers due to his experience in banking regulation,
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Testimonials
Collated independently by Legal 500 research team.
- 'King & Spalding LLP distinguishes itself through its expert handling of complex matters and its ability to provide clear, concise, and practical guidance. Their collaborative engagement often mirrors that of an internal team. I seek counsel for strategic, actionable advice rather than a recitation of applicable rules, and King & Spalding has consistently met that expectation.'
- 'I have worked closely with Russell Sacks and Steven Blau for many years. Both attorneys are highly knowledgeable and consistently provide sound, practical guidance across a broad range of matters. For firms that rely on SEC Rule 15a-6, there is no more experienced or capable team.'
Practice head
Matthew Biben; Kimberly Prior; Russell Sacks
Other key lawyers
Steven Blau