X0306 4 2019-04-22 0 0001533040 Phio Pharmaceuticals Corp. PHIO 0001388395 Barrett John A C/O PHIO PHARMACEUTICALS CORP. 257 SIMARANO DRIVE, SUITE 101 MARLBOROUGH MA 01752 0 1 0 0 Chief Development Officer Common stock, $0.0001 par value 2019-04-22 4 A 0 222991 0.00 A 222991 D This amount is comprised entirely of Restricted Stock Units which shall vest in equal installments over four years, with the first installment on April 22, 2020 and the last installment on April 22, 2023, subject to continued employment with the Company on the applicable vesting date. Caitlin Kontulis, attorney-in-fact 2019-04-24