 NEW YORK, April 30, 2021 PRNewswire -- Juan Monteverde , founder and managing partner at Monteverde Associates PC, a national securities firm rated Top 50 in the 2018-2020 ISS Securities Class Action Services Report and headquartered at the Empire State Building in New York City, is investigating Proofpoint, Inc. PFPT or the Company PFPT relating to its proposed acquisition by Thoma Bravo. Under the terms of the agreement, PFPT shareholders will receive 176.00 in cash per share they own. 