Unknown Author
January 24, 2026
Bloomberg Ranks Sidley No. 1 for Shareholder Activism Defense for H1 2025

2 min
AI-made summary
- Sidley has been ranked No
- 1 for company-side legal advisers in Bloomberg’s Global Activism League Tables for H1 2025, both in North America and globally
- The firm led in the total number of defended companies (32) and was top-ranked for both large and small market capitalizations, as well as in the consumer discretionary and financial industries
- Sidley has also received top rankings from Chambers USA, Legal 500, FactSet, Diligent, and LSEG.
Sidley has been ranked No. 1 for company-side legal advisers in Bloomberg’s Global Activism League Tables for H1 2025 — both in North America and globally. Bloomberg has ranked Sidley the No. 1 legal adviser for activism defense in North America for more than five years. For H1 2025, Bloomberg ranked Sidley No. 1 for the total number of defended companies (32). Sidley was ranked No. 1 across the market capitalization spectrum – both for larger companies (market cap above US$1 billion) and for smaller companies (market cap below US$1 billion). Bloomberg also ranked Sidley the No. 1 legal adviser for activism defense in the consumer discretionary and financial industries. A link to the full league tables is here. The Bloomberg rankings follow Sidley’s Band 1 ranking in Chambers USA in Corporate/M&A: Takeover Defense, which stated that “Sidley Austin is the best in the business at activism defense work.” Similarly, Legal 500 has ranked Sidley in Tier 1 for Shareholder Activism — Advice to Boards, calling Sidley’s Shareholder Activism co-chairs Kai Liekefett and Derek Zaba “two of the best lawyers in America.” Sidley has also been ranked No. 1 in the shareholder activism defense league tables by FactSet, Diligent, and LSEG for company-side engagements in the past three years. In the past five years, Sidley has represented companies in approximately 150 proxy contests, several hundred activist campaigns, and dozens of settlements — more than any other legal defense practice in the world.~~Sidley has been ranked No. 1 for company-side legal advisers in Bloomberg’s Global Activism League Tables for H1 2025 — both in North America and globally. Bloomberg has ranked Sidley the No. 1 legal adviser for activism defense in North America for more than five years. For H1 2025, Bloomberg ranked Sidley No. 1 for the total number of defended companies (32). Sidley was ranked No. 1 across the market capitalization spectrum – both for larger companies (market cap above US$1 billion) and for smaller companies (market cap below US$1 billion). Bloomberg also ranked Sidley the No. 1 legal adviser for activism defense in the consumer discretionary and financial industries. A link to the full league tables is here. The Bloomberg rankings follow Sidley’s Band 1 ranking in Chambers USA in Corporate/M&A: Takeover Defense, which stated that “Sidley Austin is the best in the business at activism defense work.” Similarly, Legal 500 has ranked Sidley in Tier 1 for Shareholder Activism — Advice to Boards, calling Sidley’s Shareholder Activism co-chairs Kai Liekefett and Derek Zaba “two of the best lawyers in America.” Sidley has also been ranked No. 1 in the shareholder activism defense league tables by FactSet, Diligent, and LSEG for company-side engagements in the past three years. In the past five years, Sidley has represented companies in approximately 150 proxy contests, several hundred activist campaigns, and dozens of settlements — more than any other legal defense practice in the world.
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