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Mark Ostermann was born on March 2, 1958 and passed away on July 27, 2025 at the age of 67. He attended local schools including Sheboygan North High School. Mark was an avid Packer fan and enjoyed collecting Packer memorabilia. He loved spending time with his family and friends, especially his nieces and nephews.
Mark is survived by his siblings, Rick Ostermann of Antigo, WI, Lee Ostermann of Sheboygan and Jacqueline Bulter of Sheboygan; two grandsons; nine nieces; four nephews; nine great-nieces and nine great nephews. He is preceded in death by his parents, Lowell and Sharon Ostermann; brother, Michael John Ostermann; fiancé Susan Morton and daughter, Angela Renzelmann.
A celebration of Mark’s life will be held at a later date.