13 th October 2021 Darktrace plc Pre-Open Trading Update Strong Q1 performance, increasing revenue growth expectations for FY 2022 Darktrace plc (DARK.L) (together with its subsidiaries, "Darktrace" or "the Group") a global leader in cyber security AI, today provides a trading update for its first quarter of FY 2022 ended 30 th September 2021. Operating and Financial Performance For Q1 FY 2022, Darktrace continued the strong sales performance it delivered in 2H FY 2021, growing its customer base to 5,975, up 42.7% year-on-year. As new customer additions are the primary driver of constant currency Annualised Recurring Revenue (ARR) measures, this resulted in net ARR added for Q1 FY 2022 of $24.1 million, up 63.8% over the same quarter of FY 2021.