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Proofpoint to acquire Varonis Systems in $6.3 billion all-cash deal

Cybersecurity company Proofpoint, backed by Thoma Bravo, has agreed to acquire data security specialist Varonis Systems in an all-cash transaction valued at approximately $6.3 billion.

Graphic announcing Proofpoint's agreement to acquire Varonis in a $6.3 billion all-cash deal at $49.75 per share, representing a 52 percent premium.
Image: @AGTPinsights

Cybersecurity company Proofpoint, owned by private equity firm Thoma Bravo, will acquire data security firm Varonis Systems in an all-cash deal valued at approximately $6.3 billion, the companies announced on Thursday, according to Reuters reporting by Jaspreet Singh.[2][3]

Under the terms of the agreement, Proofpoint will pay $49.75 per share in cash for Varonis. The offer represents a 52% premium over the cybersecurity company's closing share price prior to the emergence of sale rumors.[6]

Trade publication SecurityWeek characterized the purchase as the largest M&A deal announced in 2026, while Bloomberg reported the multi-billion-dollar transaction amid a broader rebound in technology mergers and acquisitions.[1][4][5]

Key facts

  • Proofpoint, owned by private equity firm Thoma Bravo, agreed to acquire data security firm Varonis Systems.
  • The proposed acquisition is an all-cash transaction valued at about $6.3 billion.
  • Proofpoint will pay $49.75 per share, representing a 52% premium over Varonis' closing price before sale rumors began.
  • The companies announced the transaction on Thursday, according to Reuters reporting.
  • SecurityWeek reported the transaction as the largest M&A deal announced in 2026.
  • Bloomberg noted the deal comes as technology sector mergers and acquisitions experience a rebound.

Sources · 5 sources

  1. SE

    SecurityWeek@SecurityWeekPost on X ·

    Largest M&A Announced in 2026: Proofpoint Inks $6.3 Billion All-Cash Deal to Acquire Varonis https://t.co/Bd5Kj27szC

    Open source
  2. TE

    Techmeme@TechmemePost on X ·

    Thoma Bravo-owned cybersecurity company Proofpoint plans to buy data security firm Varonis Systems in an all-cash deal valued at about $6.3B (@i_jass / Reuters) (Visit Techmeme dot com for the link and full context!)

    Open source
  3. TE

    TechmemeArticle ·

    Thoma Bravo-owned cybersecurity company Proofpoint plans to buy data security firm Varonis Systems in an all-cash deal valued at about $6.3B (Jaspreet Singh/Reuters) Jaspreet Singh / Reuters : Thoma Bravo-owned cybersecurity company Proofpoint plans to buy data security firm Varonis Systems in an all-cash deal valued at about $6.3B — Thoma Bravo-owned cybersecurity company Proofpoint will buy data security firm Varonis Systems (VRNS.O) in all-cash deal valued at about $6.3 billion, the companies said on Thursday.

    Open source
  4. SE

    SecurityWeek@SecurityWeekPost on X ·

    Largest M&A Announced in 2026: Proofpoint Inks $6.3 Billion All-Cash Deal to Acquire Varonis https://t.co/Bd5Kj280pa

    Open source
  5. BL

    Bloomberg@businessPost on X ·

    Today in Bloomberg Deals: Goldman, McKinsey veterans tap minority stakes to sidestep private equity woes and Proofpoint to buy Varonis for $6.3 billion as tech M&A rebounds. https://t.co/0NnXhLMOWF

    Open source
  6. AG

    AGTP@AGTPinsightsPost on X ·

    BREAKING: Proofpoint agrees to buy cybersecurity firm Varonis for about $6.3 billion in cash, paying $49.75 a share, a 52% premium to Varonis' closing price before sale rumors began. https://t.co/nXJA5dyjl5

    Open source