Daniel "Dean" Mathey, 56, of Sioux City, IA, passed away surrounded by his family on October 25, 2025.  A memorial service will be held Saturday, November 8, 2025 at 11:00 a.m., with a visitation 1 hour prior at Waterbury Funeral Service of Sioux City.  There will also be a celebration of life as well as burial in White Lake, SD at a later date.  In honor of Dean, please wear your favorite Iowa Hawkeyes attire.