Simpson Thacher & Bartlett LLP remains a go-to for issuers and underwriters in high-value debt offerings, including in investment-grade debt offerings and structured finance. Among its top work is its representation of underwriters, led by JP Morgan, in connection with DoorDash's debut $2.75 billion convertible senior notes offering. The team is co-led by New York-based lawyers Kenneth Wallach, who advises corporate and investment banking clients, and Roxane Reardon, who has notable work in the e-commerce, manufacturing and healthcare sectors, particularly on the underwriter's side. Joshua Ford Bonnie in Washington DC also co-leads the practice. David Azarkh, also in New York, is a key name in the team, with experience in investment-grade debt offerings and liability management transactions in addition to his expertise in covenant terms and disclosure matters. Other names to note in the New York office are Hui Lin and Marisa Stavenas. William Brentani and Daniel Webb, located in the Palo Alto office, are recognized for their work in the tech sector, while Houston's Brian Rosenzweig focuses on energy matters. Niels Jensen joined the New York team from Vinson & Elkins LLP in April 2025. Arthur Robinson retired in December 2024.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Sector knowledge
Testimonials
Collated independently by Legal 500 research team.
- ‘This practice has a real depth of knowledge and extensive experience in this area.’
‘This team exhibits very high standards of professionalism and responsiveness. This combined with extensive transaction experience results in exceptional service.’
‘Strong bench and attention to detail. Good internal firm expertise (network of partners with SEC and finance experience) to help problem solve if we run into an unusual issue.’
‘Marisa Stevanas and Ignacio Perez are thoughtful, easy to work with and accountable. The more I have worked with them the greater trust I have that they are on top of matters, allowing me flexibility to allocate my time to other matters if something urgent arises.’
Key clients
- Adobe Inc.
- ADP
- Apollo Global Management, Inc.
- Apple
- Blackstone Credit
- Boston Scientific Corporation
- BofA Securities, Inc.
- Broadcom Inc.
- CB Richard Ellis Services, Inc.
- CVS Health Corporation
- Dell Technologies Inc.
- GE HealthCare Technologies
Work highlights
Represented Mars in $26 Billion Multi-Tranche Rule 144A Notes Offering.
Advised on a debut issuing for DoorDash that was upsized due to strong investor demand.
Represented the initial purchasers in Senior Notes offerings by Oracle Corporation totaling over $25.75 billion.
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.
Practice head
Joshua Ford Bonnie; Roxane F. Reardon; Kenneth B. Wallach
Other key lawyers
David Azarkh; William Brentani; Daniel Webb; Brian Rosenzweig; Hui Lin; Marisa Stevanas; Niels Jensen; Ignacio Perez