NEW YORK--(BUSINESS WIRE)--Halper Sadeh LLC, an investor rights law firm, is investigating whether the sale of 89bio, Inc. (NASDAQ: ETNB) to Roche is fair to 89bio shareholders. Under the terms of the proposed transaction, 89bio shareholders will receive $14.50 per share in cash at closing, plus a non-tradeable contingent value right to receive certain contingent payments of up to an aggregate of$6.00 per share in cash upon achievement of specified milestones. Halper Sadeh encourages 89bio sha. ...