UPDATE 1 — Thoma Bravo's Proofpoint to buy Varonis Systems in $6.3 billion all — cash deal
(Adds details and background from paragraph 2 onwards) Oct 15 (Reuters) — Thoma Bravo-owned cybersecurity company Proofpoint will buy data security firm Varonis Systems in all-cash deal valued at about $6.3 billion, the companies said on Thursday. Under the agreement, Varonis shareholders will receive $49.75 per share