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股东激进主义及公司防御

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“Sidley Austin is the best in the business at activism defence work.”
Chambers USA 2024

Sidley’s Shareholder Activism and Corporate Defense practice is widely recognized as the go-to activism defense practice and ranked No. 1 across all league tables for this kind of work. Our practice is led by Kai H. E. Liekefett and Derek Zaba, two of the very few lawyers in the world who devote 100% of their time to shareholder activism, proxy fights, hostile takeovers, and other contests for corporate control, including related settlements, as well as short attacks.

In the past five years, Sidley has defended approximately 150 proxy contest defenses worldwide and more than 25% of all late-stage proxy contests in the United States, more than any other law firm.

Our team has been opposite of all major activists, including Starboard, Elliott, Carl Icahn, ValueAct, JANA Partners, Trian, Third Point, Macellum, Ancora, Sachem Head, Engaged Capital, Saba Capital, Browning West, Impactive Capital, and Engine Capital. Due to our knowledge and experience, Sidley is frequently hired as “shareholder activism counsel”, “proxy fight counsel”, or “red team” by companies and/or their boards to work with primary outside counsel on activism defense matters.

Strong representation on behalf of clients has earned our Shareholder Activism and Corporate Defense practice widespread recognition in such publications, including:

  • Chambers USA ranking Sidley Band 1 in New York for “Corporate/M&A: Takeover Defense” since 2022
  • The Legal 500 ranking Sidley Tier 1 in the U.S. for “Shareholder Activism – Advice to Boards” since 2022

Sidley has been ranked No. 1 in all shareholder activism defense league tables since 2020, including:

  • Ranked No. 1 in Bloomberg’s Global Activism League Tables for company representations
  • Ranked No. 1 in FactSet’s Company Defense League Tables for company representations
  • Ranked No. 1 in LSEG’s Global Shareholder Activism Rankings for company representations (formerly Refinitiv/Thomson Reuters) 
  • Ranked No. 1 in Diligent Market Intelligence’s Activism Advisor Awards for total issuer representations
公告
Bloomberg Ranks Sidley No. 1 for Shareholder Activism Defense for H1 2025
July 1, 2025
出版专著
Fewer Campaigns, but Much to Observe from the 2025 Proxy Season
June 18, 2025 Harvard Law School Forum on Corporate Governance
成就
Chambers USA Ranks Sidley as Top Law Firm for Takeover Defense
June 5, 2025
Watch
Sidley’s Liekefett Discusses the Outlook for Shareholder Activism With Bloomberg TV
June 3, 2025 Bloomberg
出版专著
The Effect of Tariffs on Shareholder Activism
May 27, 2025 Agenda
公告
Sidley Represents Beacon Roofing Supply in Its US$11 Billion Sale to QXO
March 20, 2025

Representative Matters

While many shareholder activism matters remain private, a selection of our Shareholder Activism and Corporate Defense team’s representative engagements includes:

  • BlackRock in its proxy contest defense against Saba Capital
  • The New York Times in respect of an activist investment by ValueAct
  • Hasbro in its proxy contest defense against Alta Fox and Ancora
  • Box in its proxy contest defense against Starboard
  • Emerson Electric in respect of its unsolicited takeover bid for National Instruments
  • Crown Castle in its activism defense campaign against Elliott
  • US Foods in its proxy contest defense against Sachem Head
  • Alkermes in its proxy contest defense against Sarissa
  • Gildan in its proxy contest defense Browning West (U.S. counsel)
  • Alight in its proxy contest defense against Starboard
  • Enhabit in its proxy contest defense against AREX Capital
  • SpartanNash in its proxy contest defense against Macellum and Ancora
  • Texas Pacific Land Trust in its activism defense and litigation against Horizon Kinetics and SoftVest
  • Nordstrom in its activism campaign defense against RC Ventures/Ryan Cohen and the unsolicited take-private bid by El Puerto de Liverpool and the Nordstrom family
  • Freshpet in its proxy contest defense against JANA Partners
  • Sleep Number in its proxy contest defense against Stadium Capital
  • BJ’s Restaurants in its activism defense against Pleasant Lake Partners/Fund 1 and PW Partners
  • Invesco in its proxy contest defense against Saba Capital
  • Medallion Financial in its proxy contest defense against ZimCal Asset Management and KORR Value
  • The Necessity Retail REIT and Global Net Lease in their proxy contest defense against Blackwells Capital

About Our Team

Kai Liekefett, a fellow of The American College of Governance Counsel, was named “Dealmaker of the Year” by The American Lawyer in 2019 for his proxy fight work. The American Lawyer named Derek Zaba a “Trailblazer in the Western Region of the United States” in 2022 for his work in shareholder activism and contested M&A. Both Kai and Derek are ranked by Chambers USA among the leading lawyers for “Corporate/M&A: Takeover Defense” and in The Legal 500 for “Advice to Boards.” Sidley partner Beth Berg was honored by The Deal as one of the “Top Women in Dealmaking” for her work in shareholder activism in both 2021 and 2022 and as a key lawyer in The Legal 500 for “Advice to Boards.”; additional team members listed as key lawyers for “Advice to Boards” include partners Jessica Wood, Leonard Wood, and Reuben Zaramian. Sidley’s team members speak regularly about shareholder activism on panels and at universities around the world, including at Harvard and Stanford. They are frequently interviewed and quoted as shareholder activism and corporate defense thought leaders by the national and international media including CNN, The Wall Street Journal, CNBC. The New York Times, The Economist, Bloomberg, Reuters, Financial Times, USA Today, Forbes, Law360, and The Deal.

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