NEW YORK--(BUSINESS WIRE)--Halper Sadeh LLC, an investor rights law firm, is investigating whether the sale of Premier, Inc. (NASDAQ: PINC) to an affiliate of Patient Square Capital for $28.25 in cash per share is fair to Premier shareholders. Halper Sadeh encourages Premier shareholders to click here to learn more about their legal rights and options or contact Daniel Sadeh or Zachary Halper at (212) 763-0060 or sadeh@halpersadeh.com or zhalper@halpersadeh.com. The investigation concerns wheth. ...