TESS transit light curves from sectors 12, 39, and 66. The normalised flux (blue points) and the Gaussian process (GP) model (orange) used to detrend the light curve is plotted on the left. The phase-folded light curves centred on the transit of TOI-4552 b, the transit model (dashed black line), the binned flux (red points), and the residuals after fitting for the transit are plotted on the right for each sector. Sectors 12 and 39 were observed by TESS at a 2-minute cadence, whereas sector 66 was observed at a 20-second cadence. Since TOI-4552 b is a USP, we chose to keep the high cadence of sector 66 to provide a better sampling at the expense of lower precision.