The securities litigators at Weil, Gotshal & Manges LLP in New York ‘anticipate problems and produce excellent work’, handling ecurities, derivative, breach of fiduciary duty and M&A litigation, as well as internal investigations and regulatory enforcement actions for some of the largest corporations in the US. John Neuwirth and Caroline Zalka lead the practice and are ‘dependable, expert, and a pleasure to work with’. Neuwirth and up-and-coming partner Joshua Amsel are key counsel to AMC Entertainment in a high-value matter. Evert Christensen also play pivotal roles in the practice. Regulatory enforcement specialist Robert Stern in Washington DC is ‘insightful, tenacious and a great advocate’. He is currently acting for RBC Capital Markets in a case seeking to recoup underwriter fees paid to investment banks that underwrote Puerto Rico’s general obligation debt. Stacy Nettleton and Jonathan Polkes departed the team in March 2025.
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Testimonials
Collated independently by Legal 500 research team.
‘Technically excellent lawyers; Excellent knowledge of the law.’
‘Josh Amsel is an excellent attorney.’
‘Great depth of talent and resources within the firm that the team draws upon effectively as needed’
‘Robert Stern a great partner, insightful, tenacious and a great advocate and counsel.’
‘The quality of the partners, dogged pursuit of client interests, and consistent winning results.’
‘John Neuwirth, Josh Amsel, and Carolyn Zalka are top-notch in all respect -- dependable, expert, and a pleasure to work with. All the first people to call with bet the company litigation and related issues.’
‘The Weil securities litigation team is first-rate. They have a comprehensive grasp of the subject matter, are well-respected, anticipate problems, and produce excellent work product. The representation they provide is stellar. Among their many strengths is responsiveness and practicality.’
‘John Neuwirth is a fantastic lawyer. He has the ability to convey complex material very simply, and connects with judges. He understands pressure points and litigation strategy, and is respectful and responsive. Josh Amsel is also an excellent lawyer - he is a strong team leader with a good grasp of the facts and a strong writer.’
Key clients
- Brookfield Asset Management
- Getty Images
- Elanco Animal Health
- Morgan Stanley
- AMC Entertainment
- Walgreens Boots Alliance
- TripAdvisor
- Marathon Digital Holdings
- Warner Bros. Discovery
- Telos Corp.
Work highlights
- Successfully defended long-time client AMC Entertainment in fast-tracked stockholder litigation in Delaware Chancery Court arising from its planned overhaul of its capital structure – one of the highest-profile Delaware corporate disputes to take shape this year.
- Represented Morgan Stanley in the litigation and investigations fall-out from Elon Musk’s proposed, abandoned, and then completed $44B acquisition of Twitter.
- Secured two dismissals for Telos Corporation, in a securities fraud class action in which plaintiffs attempted to utilize unforeseen events – the COVID-19 pandemic and major cyberattacks on government agencies – to attack the company’s revenue and growth forecasts.
Lawyers
Hall of fame
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Leading partners
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Next generation partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Practice head
John Neuwirth; Caroline Zalka
Other key lawyers
Robert Stern; Joshua Amsel