X0206 3 2020-08-01 1 0001463361 Unity Biotechnology, Inc. UBX 0001727640 Sullivan Lynne Marie C/O UNITY BIOTECHNOLOGY, INC. 285 EAST GRAND AVENUE SOUTH SAN FRANCISCO CA 94080 0 1 0 0 See Remarks Interim Chief Financial Officer /s/ Tamara L. Tompkins, as Attorney-in-Fact for Lynne Sullivan 2020-08-04