An end cap for a ceiling panel of a ceiling system. The end cap includes a face plate having an inner surface, a bottom edge, a top edge, a first side edge, and a second side edge. A first insertion plate extends from the inner surface of the face plate at the top edge of the face plate. A second insertion plate extends from the inner surface of the face plate at the bottom edge of the face plate. A concealment portion extends from the inner surface of the face plate along the first and second side edges of the face plate. The concealment portion may include an upper section positioned above the first insertion plate and spaced from the first insertion plate by a first gap and a lower section of positioned below the second insertion plate and spaced from the second insertion plate by a second gap.