NEW YORK — DiCello Levitt LLP, along with co‑counsel Webster Book LLP and Sperling Kenny Nachwalter, LLC, has filed the first antitrust class action challenging CoStar Group, Inc. and CoStar
NEW YORK – December 11, 2025 – Steven Groopman has joined DiCello Levitt’s nationally recognized Antitrust and Competition Litigation Practice Group as a partner. Groopman is recognized for
