 NEW YORK, April 26, 2021 PRNewswire -- WeissLaw LLP is investigating possible breaches of fiduciary duty and other violations of law by the board of directors of Proofpoint, Inc. Proofpoint or the Company NASDAQ: PFPT in connection with the proposed all-cash acquisition of the Company by Thoma Bravo. Under the terms of the merger agreement, Proofpoint shareholders will receive 176.00 in cash for each share of Proofpoint common stock that they hold. 