0001835597 2026-06-18 2026-06-18 false 0001835597 8-K 2026-06-18 PepGen Inc. DE 001-41374 85-3819886 321 Harrison Avenue 8th Floor Boston MA 02118 (781) 797-0979 false false false false Common stock, par value $0.0001 per share PEPG NASDAQ true false