(4-traders.com) NEW YORK, NY / ACCESSWIRE / June 9, 2018 / Pomerantz LLP is investigating claims on behalf of investors of WPP plc ("WPP" or the "Company") (NYSE: WPP). Such investors are advised to contact Robert S. Willoughby at rswilloughby@pomlaw.com or 888-476-6529, ext. 9980.The investigation concerns whether WPP and certain of its officers and/or directors...http://www.4-traders.com/WAUSAU-PAPER-CORP-14888/news/Wausau-Paper-Corp-Pomerantz-Law-Firm-Investigates-Claims-On-Behalf-of-Investors-of-WPP-plc-WPP-26744598/?utm_medium=RSS&utm_content=20180610