X0306 4 2019-12-06 0 0001720580 resTORbio, Inc. TORC 0001776004 Klickstein Lloyd C/O RESTORBIO, INC. 500 BOYLSTON STREET, 13TH FLOOR BOSTON MA 02116 0 1 0 0 Chief Scientific Officer Common Stock 2019-12-06 4 A 0 118222 0.00 A 118222 D Stock Option (Right to Buy) 1.27 2019-12-06 4 A 0 88667 0.00 A 2029-12-05 Common Stock 88667 88667 D The Reporting Person was issued Restricted Stock Units ("RSU"). Each RSU represents a contingent right to receive one share of common stock. The RSUs shall vest in four (4) annual installments, with the first tranche vesting on December 6, 2020. The RSUs may be settled only by delivering shares of common stock, and thus, the grant is being reported in Table I as allowed per SEC guidance. 25% of the shares shall vest on December 6, 2020, with the remainder vesting in 36 equal monthly installments thereafter. /s/ Lloyd Klickstein 2019-12-06