From Wikipedia:
In May 2018, Koester retired and sold Delmark Records to Delmark Records LLC, of which Julia A. Miller is the Managing Member. Julia A. Miller became the label President & CEO and Elbio Barilari became the Vice President & Artistic Director. They are two musicians from Chicago and Uruguay, respectively. The sale included Delmark's subsidiary labels, CD and LP inventory, the catalog of masters, and Riverside Studio