Elected officials in Wisconsin must submit reports on their finances to the state. Here is the report from the court’s current chief justice.

Chief Justice Annette Kingsland Ziegler was elected to the Wisconsin Supreme Court in 2007 and re-elected in 2017.
The right-wing justice was chosen by a majority of the court to serve as chief justice in 2021, though the new left-wing court majority can and likely will choose their own chief justice at some point.
A justice on the Wisconsin Supreme Court will earn an annual salary of about $185,000 in 2023, more than any other elected official in Wisconsin state government, including the governor, who earns an annual salary of about $166,000.