Top panel: SN 2024ggi nebular spectra at 287, 288, 360, and 396 days after the explosion. The 288 d (GMOS) spectrum is plotted with a thin line as it is almost the same epoch as the 287 d (IMACS) spectrum (we do not combine them as they were taken with different instruments). Bottom panels: Line profiles at 287, 360, and 396 days in the velocity space for (a) Mg I]λ4571, (b) Na I D, (c) [O I]λλ6300, 6364, (d) Hα, (e) [Fe II]λ7155, f) [Ca II]λλ7291, 7324, and (g) Ca II T. For the purposes of visualization, all the spectra are scaled to the maximum emission in the [O I] region.