X0306 4 2020-05-28 0 0001624658 Allena Pharmaceuticals, Inc. ALNA 0001389500 BRENNER LOUIS MD C/O ALLENA PHARMACEUTICALS, INC. ONE NEWTON EXECUTIVE PARK, SUITE 202 NEWTON MA 02462 1 1 0 0 President and CEO Restricted Stock Units 2020-05-28 4 A 0 123966 0.00 A Common Stock 123966 123966 D Restricted Stock Units 2020-05-28 4 A 0 123966 0.00 A Common Stock 123966 123966 D This restricted stock unit award was previously reported on a Form 4 filed on 12/4/2019. In connection with the new award also reported on this Form 4, this award was amended on May 28, 2020 such that it will now vest in full on December 2, 2020 rather than in two installments. The new award and the amended award are intended to provide additional retentive value to the recipient. Each restricted stock unit represents a contingent right to receive one share of common stock. 100% shall vest on December 2, 2020. /s/ Kevin Brennan, attorney-in-fact 2020-05-29