Fermi-LAT spectrum of periodic FRB 20180916. We plot the 95% upper-limits for the 10 s and 1000 s time windows centred on the first FRB event, as well as for the folding analysis on the 72 detected bursts using 1000 s time windows and for the 5.4-day active phase windows obtained for the 13 years of LAT data. For a comparison the 2σ ULs obtained with AGILE-GRID in the 0.5–10 GeV energy band (Tavani et al. 2020) gray are plotted.