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US private equity group to buy Sophos for $3.9bn

Kaye Wiggins, Nic Fildes and Philip Georgiadis in London

US private equity group Thoma Bravo has agreed a $3.9bn deal to buy the cyber security company Sophos, removing another British technology stalwart from the public markets. The Oxfordshire-based cyber and network security software developer said that it was first approached by Thoma Bravo in June.