  We searched for and found no higher mass (>3Msun) unbound binary stellar
companions to the progenitor of pulsar J1124-5916. There are lower mass
candidates, but they all have high probabilities of being false positives.
There are no candidates for it now being a fully unbound triple system. Even if
one of the lower mass candidates is an unbound companion, it seems unlikely
that it could have contributed to stripping the progenitor prior to the
supernova. The stars are too low mass to be significant mass gainers, and they
are too slowly moving to be the survivors of a compact, post-common envelope
binary. The addition of one more system slightly improves the statistical
constraints on the binary and triple status of supernova progenitors just
before and after death.
