Mimecast rejected a buyout offer from Proofpoint (backed by private equity firm Thoma Bravo) because of potential antitrust risks in the email security market, Reuters reported.The report surfaced roughly one month after Permira announced plans to acquire Mimecast for roughly $5.8 billion. That M&A agreement included a 30-day "go shop" period, which allowed Mimecast to solicit and consider additional buyout offers.Proofpoint, backed by Thoma Bravo, made an offer for Mimecast that was 16% higher than the Permira agreement, but Proofpoint declined the higher offer inquiry amid antitrust concerns, Reuters said.Meanwhile, the Permira-Mimecast deal is expected to close in the first half of 2022.
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