Brian W. Seidl, 39, Green Bay, passed away Tuesday, June 30th, 2026. He was born in Green Bay on June 6, 1987, to William and Joan Seidl. Brian was a graduate of Luxemburg-Casco High School and went on to earn a degree in Accounting from the University of Wisconsin-Green Bay. He worked as an account executive at Packer Freight.

Brian was a talented high school athlete who carried his love of sports throughout his life. He was an avid fan of Wisconsin sports teams and enjoyed competing in fantasy football leagues with family and friends. Nearly every weekend, Brian could be found alongside his dad, creating delicious meals on the smoker. Brian treasured spending time with his family, especially his niece and nephews. “Uncle Brian” spent countless hours building castles, playing games, and pushing all three kids on the swings. Above all, being an uncle was one of his greatest joys and the role he cherished most. Brian shared a special bond with his dog “Naz”, whose passing in December of 2025 was a significant loss to him.

Brian is survived by his parents, Bill “Puffin” and Joan Seidl; his sister Kristin (Matthew) Krzemienski, Bayside; brother Danny (fiancé Angela Sallinen) Seidl; niece and nephews, Reagan and Liam Krzemienski and Briggs Seidl.

He was preceded in death by his grandparents, Frankie and Carol Seidl, and Roland and Ellen Baierl as well as an Aunt and Uncles, Mary “Sue” Baierl, Tom “Butch” Baierl, and Dave Baierl.

A visitation will take place on Wednesday, July 8, 2026, from 8:45 a.m. - 10:45 a.m. at St. Mary’s Church, Luxemburg. Funeral Mass to follow at 11:00 a.m. with Very Rev. Daniel Schuster officiating. McMahon Funeral Home, Luxemburg, is assisting the Seidl family. Online condolences can be shared at McMahonFH.com.