Common proper motion analysis for HR 3549 B. The black solid line displays the motion of the companion if it was a background object while the black square at the end of the line indicates the position that it would have at the observation date. The green points are taken from Mawet et al. (2015a), the orange one is from our astrometric measurements. We only plot astrometric values from the IFS observation, as our IFS observations provided a higher astrometric precision than our IRDIS observations.