Sidley Austin LLP

Sidley Austin LLP‘s derivatives and structured products practice is noted as ’exceptionally experienced in the interplay between capital markets and equity derivatives’, and leverages broad expertise in advising on buy and sell-side derivatives transactions, alongside diverse asset class mandates, including esoteric assets. New York-based William Massey is highly experienced in structured product offering involving equities, currencies, commodities, and hedge funds, and co-heads the team with Ellen Pesch and Elizabeth Schubert, based in Boston and Chicago respectively. Pesch is highly experienced in derivatives regulatory queries, including cross-border compliance matters, while Schubert is turned to by clients for her experience in buy-side derivative transactions. Michael T. Kohler and William Mahouski are also key members of the team. Peter Malyshev joined the team in Washington DC in January 2026.