A&O Shearman continues to run a strong investment-grade DCM practice with issuer and underwriter representation in major transactions across several industries, such as the financial services, chemicals, life sciences, TMT and energy sectors, amongst others. Standout work from the team includes advising IBM on offerings totaling $4.75bn. Lona Nallengara advises corporations and financial institutions on public and private offerings, and Richard Alsop‘s expertise includes IPOs and convertible bonds. Bill Nelson and Taylor Landry are two key names from the Houston office, noted for their work in the energy space. Erika Kent and Ryan Robski are two names to watch, serving leading roles in several transactions. Ilya Mamin provides key support along with Katya Bogdanov. Michael Kim joined the team in April 2025. All lawyers mentioned above are based in New York unless otherwise stated. Ilir Mujalovic departed the team in February 2026.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- ‘They feel like part of our team (Lona and Erika in particular). I like the expertise they bring to the table and that some of their lawyers spent time in enforcement. They also do a great job keeping us apprised of regulatory developments and trends.’
‘I like when I ask questions that Lona in particular is so conversant in this space that he can brainstorm with me on difficult questions, approaches.’
‘Ryan's technical legal expertise is matched by his immense commercial knowledge, which has been of great value to his client base. Ryan is particularly proactive and responsive, ensuring that underwriters navigate the complexities of transactions early on, and always making himself available when extra guidance is required.’
Key clients
- Barclays
- BBVA
- Bank of Nova Scotia
- BMO Capital Markets Corp.
- BofA Securities, Inc.
- Boston Scientific Corporation
- CIBC World Markets Corp.
- Citigroup
- CVS Health/Vitality Re XVI Limited
- The Dow Chemical Company
- Goldman Sachs
- International Business Machines Corporation (IBM)
Work highlights
Advised International Business Machines Corporation (IBM) in connection with its registered offering of USD4.75bn and EUR3.5bn notes.
Advised The Dow Chemical Company, in connection with its USD1.4bn and USD1bn bond offerings.
Advised Boston Scientific Corporation on a EUR1.5bn registered offering by American Medical Systems Europe B.V.
Lawyers
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Ryan Robski
Other key lawyers
Lona Nallengara; Richard Alsop; Bill Nelson; Taylor Landry; Erika Kent; Ryan Robski; Ilya Mamin; Katya Bogdanov; Michael Kim