Exhibit 99.1 Metagenomi Reports Business Updates and Full Year 2023 Financial Results Demonstrated nonhuman primate proof of concept in Hemophilia A program; progressing towards Development Candidate nomination by mid-year; 12-month nonhuman primate durability data in 2H 2024 Proof of capability demonstrated with CRISPR-associated transposase (CAST) system being developed to enable >10,000 base pair, targeted genomic integrations Ultra-small base editing systems (SMART) are the smallest nickase-based system ...