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Sebastian Alsheimer will join Cleary Gottlieb in January 2026 to lead the firm's activism defense practice. His appointment coincides with increasing pressure from activist investors on corporate boards regarding governance, capital allocation, and strategic transactions.

Shareholder activism is becoming a critical issue for publicly traded companies, with activist hedge funds and institutional investors frequently initiating campaigns to shape corporate strategy and influence executive decisions. Major law firms are establishing practices focused on activism preparedness and defense in response to this trend. Alsheimer's expertise is expected to enhance Cleary Gottlieb's capabilities in this area, as companies seek specialized legal advice to navigate activist approaches and safeguard long-term value.