[2] On 16 June, Željezničar announced the signings of 28-year-old Ajdin Mulalić and 23-year-old Dražen Dubačkić.
[15] On 4 November, Željezničar announced that its chairman of the board, Edis Kovačević, had resigned two days prior.
[25] On 16 January, Željezničar announced the signings of 24-year-old Stefan Radinović and 23-year-old Faris Zubanović.
[30] On 30 January, Željezničar announced the loan of 22-year-old Bismark Charles from CSKA Sofia for the remainder of the season.
[31] On 1 February, Željezničar announced the loan of Ajdin Mulalić to Rogaška for the remainder of the season.
[32] On 2 February, Željezničar announced the signings of 28-year-old Nemanja Cavnić, 29-year-old Antonio Pavić and 24-year-old Filip Dujmović.
[36] On 9 February, Željezničar announced the departures of Amar Musić and Nikola Turanjanin.
[37] On 10 February, Željezničar announced the loan of 20-year-old Azur Mahmić from Velež Mostar for the remainder of the season.
[40] On 8 April, Oro Ibrišimović replaced Jusuf Tanović as chairman of the board of Željezničar.