ADK Group Enters into a Three-Year Strategic Business Partnership with Stagwell

NEW YORK, Oct 13, 2026 - (ACN Newswire via SeaPRwire.com) - ADK Holdings Inc. (Headquarters: Minato-ku, Tokyo; Representative Director and President: Toshiya Oyama) has entered into a Master Agreement for a three-year strategic business partnership with Stagwell Inc. (Headquarters: New York, USA; Chairman & CEO: Mark Penn; hereinafter "Stagwell" (NASDAQ:STGW)).This partnership…