NEW YORK--(BUSINESS WIRE)--Halper Sadeh LLC, an investor rights law firm, is investigating the sale of DoubleDown Interactive Co., Ltd. (NASDAQ: DDI) to DoubleU Games Co., Ltd. for $16.25 in cash per American Depositary Share of DoubleDown. Halper Sadeh encourages DoubleDown shareholders to click here to learn more about their rights and options or contact Daniel Sadeh or Zachary Halper free of charge at (212) 763-0060 or sadeh@halpersadeh.com or zhalper@halpersadeh.com. The investigation conce. ...