VACC - Vaccitech promotes Gemma Brown to CFO September, 20 2022 04:33 PM Vaccitech plc Vaccitech ( NASDAQ: VACC ) said Tuesday it promoted Gemma Brown to the CFO role, succeeding Georgy Egorov. Brown joined VACC as head of financial reporting in 2021, before her promotion to CFO. For further details see: Vaccitech promotes Gemma Brown to CFO