Permira, a global private equity firm focused on transformational growth at scale, agreed to acquire Mimecast, a email security and cyber resilience company, for $5.8bn. "Today is an exciting milestone for Mimecast as we begin a new chapter for our company. Our team has done an outstanding job growing and expanding our relationships with customers and innovating our platform. Permira has a strong track record of collaboratively supporting companies’ growth ambitions and strategic goals, and we look forward to working together to further strengthen the cybersecurity and resilience of organizations around the world. This is a great outcome for our company and our shareholders," Peter Bauer, Mimecast Chairman and CEO. On January 13, 2022, Mimecast rejected Thoma Bravo-backed Proofpoint's higher take-private bid over antitrust concerns.