X0306 4 2020-12-17 0 0001624658 Allena Pharmaceuticals, Inc. ALNA 0001719764 WHOLIHAN EDWARD C/O ALLENA PHARMACEUTICALS, INC. ONE NEWTON EXECUTIVE PARK, SUITE 202 NEWTON MA 02462 0 1 0 0 Chief Financial Officer Common Stock 2020-12-17 4 S 0 68550 1.36 D 121272 D Common Stock 2020-12-17 4 M 0 164822 A 189822 D Restricted Stock Units 2020-12-17 4 M 0 164822 0.00 D Common Stock 164822 0 D The sale reported on this Form 4 was effected by the Reporting Person and represents shares sold to cover tax withholding obligations in connection with the vesting of restricted stock units Each restricted stock unit represents a contingent right to receive one share of common stock. On December 2, 2019, the Reporting Person was granted 82,411 restricted stock units, vesting in two equal installments on June 2, 2020 and December 2, 2020 (the "December 2019 Grant"). On May 28, 2020, the reporting person was granted an additional 82,411 restricted stock units (the "May 2020 Grant") and the December 2019 Grant was amended to vest in full, together with the May 2020 Grant, on December 2, 2020. 164,822 shares of common stock were distributed to the Reporting Person on December 17, 2020 following the vesting of the restricted stock units from the December 2019 Grant and the May 2020 Grant. /s/ Kevin Brennan, attorney-in-fact 2020-12-18