We have observed LB-1 at regular intervals (28 epochs) since November 2019 (Table 1), with the “Calar Alto high-Resolution search for M dwarfs with Exoearths with Near-infrared and optical Echelle Spectrographs” (CARMENES) mounted on the 3.5m telescope at the Calar Alto Observatory. The CARMENES instrument consists of two separate spectrographs covering the wavelength ranges from 0.52 to 0.96um and from 0.96-1.71um with R~80000-100000. (3 data files).