Diaceutics PLC maintains a diverse register of significant institutional and insider shareholders holding blocks above three percent of its issued share capital. Major equity holders include company co-founder and insider Peter Keeling (holding approximately 17.98%), asset management firms like Gresham House Asset Management Limited (holding roughly 17.02%), Canaccord Genuity Group Inc (around 9.20%), Berenberg Bank (6.42%), alongside other institutional funds such as Universal Investment GmbH and West Elk Capital.