  We present the results of our continued systematic search for near-infrared
(NIR) candidate counterparts to ultraluminous X-ray sources (ULXs) within 10
Mpc. We observed 42 ULXs in 24 nearby galaxies and detected NIR candidate
counterparts to 15 ULXs. Fourteen of these ULXs appear to have a single
candidate counterpart in our images and the remaining ULX has 2 candidate
counterparts. Seven ULXs have candidate counterparts with absolute magnitudes
in the range between -9.26 and -11.18 mag, consistent with them being red
supergiants (RSGs). The other eight ULXs have candidate counterparts with
absolute magnitudes too bright to be a single stellar source. Some of these NIR
sources show extended morphology or colours expected for Active Galactic Nuclei
(AGN), strongly suggesting that they are likely stellar clusters or background
galaxies. The red supergiant candidate counterparts form a valuable sample for
follow-up spectroscopic observations to confirm their nature, with the ultimate
goal of directly measuring the mass of the compact accretor that powers the ULX
using binary Doppler shifts.
