Simpson Thacher & Bartlett LLP advises private equity firms on fund formation, acquisitions, investment structuring, financing, and exit transactions. The firm handles complex buyouts, growth investments, and strategic M&A, providing legal expertise across regulatory, tax, and transactional matters. Marni Lerner leads the team in New York, drawing on a broad skill set to advise private equity firms such as KKR, Charlesbank, and Integrum on multi-billion-dollar acquisitions and investments. Co-head Elizabeth Cooper remains a key adviser to Blackstone, Silver Lake, and New Mountain Capital, recently overseeing transactions across the healthcare, retail, media and entertainment, and professional services sectors. Atif Azher is recognised for his expertise in public and private M&A, bolstering his transactional practice with strength in corporate governance and financial advisory matters. Anthony Vernace, another key adviser to Blackstone, is noted for his sector-spanning capabilities and ability to handle high-stakes domestic and cross-border M&A. Naveed Anwar and Michael Holick represent a range of financial sponsors and their portfolio companies on acquisitions, investments, and disposals, while Sven Mickisch joined from Skadden in March 2024. The team saw several departures in 2024, with Sebastian Tiller departing in October, Justin Rosenberg, in April, and Jihyun Chung in June.
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Profile

Key clients

  • Advent
  • AEA Investors
  • Angeles Equity
  • Apax Partners
  • Apollo Global Management
  • Atairos Group
  • Bayview Asset Management
  • BC Partners
  • BlackRock
  • Blackstone

Work highlights

  • Advised Blackstone in its acquisition of a majority stake in Emerson’s Climate Technologies business.
  • Advised KKR in its acquisition of Broadcom Inc.’s End-User Computing Division.
  • Advised TPG Rise Climate in its acquisitions of AmSpec and MIRATECH.

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

Marni Lerner; Elizabeth Cooper

Other key lawyers

Atif Azher; Anthony Vernace; Naveed Anwar; Michael Holick; Sven Mickisch