GRB 260129B was detected by Fermi/GBM at 10:06:57 UT on 2026-01-29 and is reported as a likely long GRB, localized on-ground to RA=0.36 deg, Dec=-67.05 deg (J2000) with 10.6 deg statistical uncertainty.
No observations were mentioned in X-ray, UV/optical/IR, radio, neutrino, or gravitational-wave bands.