Kepler-444 spectra associated with the light-curves in Figs. 3 and 6. The first column corresponds to the transits of Kepler-444f in Visits B, C, and F. The second column corresponds to the transit of Kepler-444e in Visit A. The third column corresponds to the inferior conjunction of the hypothetical Kepler-444g in Visit E. In the first and second rows, the spectra have been averaged over common phase windows after being phased over Kepler-444f ephemeris. The solid blue line is the reconstructed out-of-transit stellar line. The dashed blue line corresponds to simulations that provide a reasonable fit to the data in this scenario. The shaded gray area was excluded from the fits.