X0306 4 2018-06-12 0 0001645460 Cue Biopharma, Inc. CUE 0000897744 MARLETT CHRISTOPHER A 21 ERIE STREET CAMBRIDGE MA 02139 1 0 0 0 Common Stock 1017973 I See footnote Stock Option (right to buy) 14.24 2018-06-12 4 M 0 8000 0.00 A 2018-12-31 2025-06-12 Common Stock 8000 8000 D The record owner of these securities is MDB Capital Group, LLC ("MDB"). The reporting person is the Chief Executive Officer of MDB. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein and inclusion of these securities in the report shall not be an admission of beneficial ownership for purposes of Section 16 or any other purposes. /s/ Christopher Marlett by Mark R. Busch, attorney-in-fact 2018-06-14