Tensin 1 (TNS1) is a key component of integrin adhesion and plays a key role in linking the actin cytoskeleton with the ECM through interaction with integrin heterodimers. TNS1 forms functional and reversible condensates in cells in response to different extracellular stimuli that act as reservoirs of adhesion components. Here we analysed the role of phosphorylation on TNS1 condensation. Using phosphoproteomics of affinity-purified GFP-TNS1 from control and sodium arsenite-treated U2OS cells, we identify the phosphosites regulating TNS1 condensation.