exhibit 10. 4 name surname t + 41 22 716 98 00 * * * @ * * * 7 january 2020 private & confidential ed farrell c / o quotient dear ed, contract amendment – change to role further to recent discussions, i am pleased to confirm the following change to your role effective from 1 january 2020. change to job title i can confirm that from 1 january 2020 your new job title will be chief operating officer. change to salary with effect from 1 january 2020 your new salary will be £346, 340. this will commence in your january pay. stock grant in line with the change to role, you have also been awarded a restricted stock grant of 2, 232 units with a grant date of 7 january 2020. a third of this grant will vest annually over the next three years on the anniversary of the grant date. all other terms and conditions of your contract of employment remain the same. i would appreciate if you could sign both copies of this document, returning one copy to human resources and keeping the other for your records. if you have any questions relating to this matter, please do not hesitate to contact me. yours sincerely, / s / franz walt franz walt chief executive officer alba bioscience limited, registered in scotland no. sc310584 allan - robb campus, 5 james hamilton way, milton bridge, penicuik eh26 0bf t + 44 ( 0 ) 131 # # # - # # # - # # # #, quotientbd. com exhibit 10. 4 name surname t + 41 22 716 98 00 * * * @ * * * name surname t + 41 22 716 98 00 * * * @ * * * name surname t + 41 22 716 98 00 * * * @ * * * 7 january 2020 private & confidential ed farrell c / o quotient dear ed, contract amendment – change to role further to recent discussions, i am pleased to confirm the following change to your role effective from 1 january 2020. change to job title i can confirm that from 1 january 2020 your new job title will be chief operating officer. change to salary with effect from 1 january 2020 your new salary will be £346, 340. this will commence in your january pay. stock grant in line with the change to role, you have also been awarded a restricted stock grant of 2, 232 units with a grant date of 7 january 2020. a third of this grant will vest annually over the next