INDIVIDUAL PROFILE
Andrew Sioson

Andrew Sioson

FinTech 2026

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Chambers ranking badge

Ranked in 1 practice area

Chambers Review

Provided by Chambers

Professional Advisers: FinTech

FinTech Legal: Blockchain & Cryptocurrencies - USA - Nationwide

Band 4
Band 4

Individual Editorial

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 a clear stand-out. He truly knows what white glove service means.

    FinTech Legal: Blockchain & CryptocurrenciesProfessional Advisers: FinTech
  • His expertise and depth in understanding of the underlying rationale for regulations allows him to think creatively and navigate grey areas of the law.

    FinTech Legal: Blockchain & CryptocurrenciesProfessional Advisers: FinTech

Ranked Individuals at Sidley Austin LLP (8)

USA - Nationwide

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