 NEW YORK--BUSINESS WIRE--Halper Sadeh LLP, a global investor rights law firm, is investigating whether Viela Bio, Inc. NASDAQ: VIE and its board of directors violated the federal securities laws andor breached their fiduciary duties to shareholders in connection with the proposed sale of Viela Bio to Horizon Therapeutics plc for 53.00 per share in cash. On behalf of Viela Bio shareholders, Halper Sadeh LLP may seek increased consideration for shareholders, additional disclosures and infor 