A key contact for underwriters, Simpson Thacher & Bartlett LLP is strong in securities litigation matters arising from IPOs and M&A’s. The firm is particularly well-placed to advise clients within the Technology, Aircraft, and Media industries. The team is jointly led by Lynn K. Neuner and Jonathan Youngwood. Neuner is skilled in trying cases within federal and state courts, leading international and domestic arbitration, whilst Youngwood is highlighted for his experience representing corporations and boards of directors in commercial litigation, arbitration, investigations, and regulatory matters. Stephen Blake, in Palo Alto, has a combined focus on high-stakes shareholder litigation and securities regulatory matters. Craig Waldman often supports leading private equity and corporate clients in transaction-related litigation. Team members are based in New York unless otherwise stated.
Legal 500 Editorial commentary

Accolades

Client satisfaction: Sector knowledge

Testimonials

Collated independently by Legal 500 research team.

  • ‘The team is excellent. Meredith Karp and Isobel Mattson were outstanding. Their strategy development, deposition prep and performance at the deposition was all very well done. They integrated with my existing team seamlessly.’

  • ‘Meredith Karp—very strong leadership—would have her on my team anytime. Isobell Mattson—very thorough and was always willing to go the extra mile.’

  • ‘I have worked with Jonathan Youngwood and his team on a number of securities and shareholder litigation matters, in which I represented clients who were co-defendants. They have exhibited excellent judgment and a high level of substantive expertise in those matters. They are collaborative and cooperative when working on joint projects. They have a good practical sense for the personalities and issues arising in securities litigation, and a depth of experience that can provide guidance in any given situation.’

  • ‘Jonathan Youngwood is the person I have most often dealt with. Jonathan is notable for his practicality and depth of subject matter knowledge.’

  • ‘This firm consistently stands at the top of our legal partners because they offer a rare combination of elite expertise and "small-firm" personalized attention. They are ultra-responsive at all times and have a unique ability to provide clear, actionable advice that is perfectly calibrated to our specific business objectives, risk profile, and internal style. What truly differentiates them is how they prioritize our needs; despite our modest size, they treat us with the same dedication as a flagship client, demonstrating remarkable flexibility and a genuine commitment to our success.’

  • ‘The practice operates with incredible efficiency, working masterfully behind the scenes to provide a seamless experience across all practice areas. Unlike many other firms that can feel siloed or overly transactional, this team focuses on high-level collaboration and innovative service delivery that eliminates administrative friction for us. Their ability to deliver top-notch legal service while remaining agile and deeply integrated into our way of working makes them an invaluable partner and a clear leader in the market.’

Key clients

  • Alibaba Group Holding Ltd
  • Allakos Inc.
  • Bausch Healthcare (f/k/a Valeant Pharmaceuticals)
  • Bank of China International Holdings Ltd
  • Board of Pacific Gas and Electric
  • Bumble
  • Deutsche Bank AG
  • Dollar General
  • J.P. Morgan Chase & Co.
  • Kohlberg Kravis Roberts & Co.
  • Micron Technology, Inc.
  • MGP Ingredients, Inc.

Work highlights

Won appellate affirmance of dismissal on behalf of the defendant underwriters, J.P. Morgan Securities LLC, BofA Securities, Inc., Wells Fargo Securities, LLC and William Blair & Company L.L.C., of a securities class action.
Represented Pacific Gas and Electric Company Directors in dismissal of a long-fought, consolidated securities litigation.
Represented Silver Lake in the dismissal of Unity Software securities litigation.

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.

Leading partners

The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Next Generation Partners

Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.

Practice head

Lynn K. Neuner; Jonathan Youngwood

Other key lawyers

Stephen P. Blake; Craig S. Waldman; Peter E. Kazanoff; Meredith Karp; Alison Sher

L500 | Simpson Thacher & Bartlett LLP > Securities litigation: defense > United States | Legal 500 law firm profiles