Mammoth Energy Shareholder Litigation: Block & Leviton LLP Encourages Shareholders to Contact The Firm
BOSTON, June 09, 2019 (GLOBE NEWSWIRE) -- Block & Leviton LLP (www.blockesq.com), a national securities litigation firm, announces that a securities fraud class action has been filed against Mammoth Energy Services Inc. (NASDAQ: TUSK), and certain of …