Phase-folded radial velocity measurements for the confirmed and candidate planets in the GJ 3090 system. The first panel shows the confirmed planet GJ 3090 b (2.85 days), the second panel presents the confirmed sub-Neptune GJ 3090 c (15.94 days), and the third panel displays the 12.7-day candidate planet. The data points from HARPS HAM, HARPS EGGS, and NIRPS are shown with their associated uncertainties, alongside the Keplerian model curves (black lines).