PittsburghMark M. Sible, 67 of Pittsburgh, PA, passed away on Monday, July 20, 2026. Mark was a son of Robert, Sr. and the late Julia Sible. Brothers are Robert Sible Jr. and wife, Faith Sible of Uniontown and Jeffrey Sible and wife, Debbie of Hopwood. Sons are Steven Newcomer and Shawn Sible. He will be buried in Veteran’s Cemetery in Pittsburgh.