International Centre for Mathematical Sciences (ICMS-Sofia) at the Institute of Mathematics and Informatics, Bulgarian Academy of Sciences, and the Institute for the Mathematical Sciences of the Americas (IMSA) at the University of Miami, with the financial support of the Simons Foundation organize IMSAC Days in Sofia This small event is to celebrate the very successful collaboration between the institutes involved in the Institute of the Mathematical Sciences of the Americas Consortium (IMSAC), solidify our connections and expand even more the prosperous cooperation. Programme and more information can be found at https://icms.bg/imsac-days-in-sofia-conference/