COSINE-100 is a direct search experiment forweakly interacting massive particles (WIMPs) using
106 kg of low-background NaI(Tl) crystal detectors. The experiment commenced its physics
operation in September 2016 and concluded in March 2023. Its primary objective was either
reproduce or refute the annual modulation signals observed by the DAMA experiment. However,
initial three years of COSINE-100 data did not yield clear signals attributable toWIMPinteractions
and showed inconsistent results compared toDAMA’s observations, assuming the canonicalWIMP
dark matter model. Nevertheless, the model-independent test of annual modulation has not yet
reached a final conclusion. In this proceeding, we will discuss the recent progress made in the
COSINE-100 experiment and outline future prospects.