Andrew Sioson
FinTech Guide 2025
Up and Coming : FinTech Legal: Blockchain & Cryptocurrencies
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Up and Coming
Chambers Review
FinTech
Andrew Sioson is a partner at Sidley Austin and a member of its global Securities Enforcement and Regulatory practice. Sioson is a former special counsel at the SEC's Division of Trading and Markets. He is well regarded for advising clients on SEC, FINRA, and other regulatory issues related to blockchain and cryptocurrency.
Strengths
Provided by Chambers
"Andrew is the lawyer you call when you have a difficult project and you want to get the job done right the first time. His responsiveness and updates put me at ease."
"Andrew has been my go-to for SEC-related strategy and his guidance was really helpful for us as he worked at the SEC. He's good at finding the balance between risk mitigation and business pragmatism."
"Andrew is the lawyer you call when you have a difficult project and you want to get the job done right the first time. His responsiveness and updates put me at ease."
"Andrew has been my go-to for SEC-related strategy and his guidance was really helpful for us as he worked at the SEC. He's good at finding the balance between risk mitigation and business pragmatism."
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