Exhibit 99.1 Precigen Reports Full Year 2023 Financial Results and Business Updates – Significant progress made in the development of the PRGN-2012 AdenoVerse immunotherapy for the treatment of RRP; Precigen plans to submit a BLA under an accelerated approval pathway in the second half of 2024;ramping up commercial readiness activities for a potential launch in 2025 – – Precigen’s PRGN-2012 received the first Breakthrough Therapy Designation and accelerated approval pathway from the FDA for the treatment of ...