Joseph M. Kostial, 90, of Baden, passed away on July 28th, 2025 at his residence. He was born in Sewickley on July 30th, 1934, a son of the late John and Emma Zilka Kostial. In addition to his parents, he was preceded in death by his wife, Elizabeth “Betty” Kostial, his brother, Robert Kostial and two grandsons, Jonathan and Adam Kostial. He is survived by two sons, Edward Kostial and James Kostial and his wife, Ann, two daughters, Karen DeMarco and Cynthia Witalis, his sister, Mildred Mucci,  eight grandchildren: Jennifer Moore; Ashley, Aaron, Jayme Kostial; Alexandra and Anthony DeMarco, and Owen and Ean Witalis; as well as two great-grandchildren, Joshua and Avery Moore. Joseph was a veteran of the U.S. Army who retired from Armco Steel, and was a member of St. John the Baptist Church of Baden. Most of all, Joseph enjoyed spending time with his grandchildren. He was their biggest supporter who never missed an event. Friends will be received on Thursday, July 31st, from 11 A.M. until the time of service at 12:45 P.M. in the CORLESS-MATTER FUNERAL HOME & CREMATION SERVICES, LLC, 1133 Church Street, Ambridge, who was in charge of his arrangements and where full military honors will be performed. Private interment will follow in Saints Peter & Paul Cemetery, 1691 Ridge Road Extension, #1601, Ambridge.