Proofpoint, which is owned by Thoma Bravo, has agreed to acquire Varonis in an all-cash transaction valued at $6.3 billion. The deal will take Varonis private, according to the announcement.

SecurityWeek reports that the acquisition is structured entirely in cash. No other financial details or closing conditions are mentioned in the report.

The transaction is notable for its size and the fact that it will change Varonis' ownership structure. The report does not say how the companies plan to integrate after the deal closes.