A&O Shearman
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A key contact for underwriters is A&O Shearman; the team represents a range of clients throughout the US, from global media companies to banking industry clients. With a background in the representation of officers and directors in securities cases and the Securities and Exchange Commission (SEC) enforcement matters, Lyle Roberts co-leads the team. Adam Hakki offers an extensive amount of experience to clients within the financial services and media industries. Thad Behrens is noted for experience representing boards of directors and other executives in securities actions in state and federal courts. In June of 2025, Agnès Dunogué departed the team.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- ‘The A&O Shearman Team is comprised of top-tier legal talent. They have not only succeeded in every case they have undertaken for me, but they have done so while maintaining a personal human touch from the top partners to the admins.’
- ‘They are the best legal partners I've dealt with in any business or personal setting.’
Key clients
- Paramount Global
- PayPal
Work highlights
Acted for Paramount Global (formerly named ViacomCBS) in a securities class action litigation arising from the historic collapse of Archegos Capital Management.