Mark Kupinewicz

Mark Kupinewicz, 64, of St. Augustine, Florida, passed away unexpectedly on Thursday, December 11, 2025, at Memorial Hospital in Jacksonville. Born in Lansdale, Pennsylvania, Mark was the son of Donald Kupinewicz and the late Elaine Kupinewicz (Roberts). While attending William Tennent High School, Mark enjoyed playing the drums in the marching band, a reflection of his lifelong love of music. He went on to study criminal justice in Saint Joseph, Missouri, while proudly serving his country in the United States Air Force from 1981 to 1987. Stationed at Whiteman Air Force Base, Mark served in Security Police and Security Forces, achieving the rank of Sergeant with the 351st Missile Security Squadron. His military service was marked by discipline, honor, and a strong sense of duty. Following his military career, Mark devoted 18 years to Vanguard, where he served his clients as an investment advisor, earning their trust through dedication and integrity. Mark was a creative soul and a true visionary. Growing up, he enjoyed music, drawing, tinkering, model planes and rockets, cooking, fishing, camping, golfing, and traveling with his family—interests he carried throughout his life. During the 1990s, he was an active member of the RC plane group in Valley Forge, Pennsylvania, where he built and flew replica WWII aircraft, with the Spitfire being his favorite. After retirement, Mark’s passion for painting flourished. He became a member of the Art Studio in St. Augustine, where he proudly displayed his artwork. Mark is survived by his wife of 29 years, Susan (Helliwell). Also surviving are his children, Nicole Kupinewicz (Jerry Jr.) and Michael Kupinewicz (Kaela); his grandchildren, Kaila, Alana, and Lilly; and his great-grandson, Rhys. He is also survived by his brother, Ed Kupinewicz (Shawn); sister, Beth Maconochie (Brian); and half-sisters Kelly Gruber (Alex), Katie Snyder (Garrett), and Kristy Smith (Aaron). Mark was a proud uncle to 13 nieces and nephews. He was preceded in death by his half-brother, Konnor Kupinewicz. Relatives and friends are invited to attend a viewing on Saturday, December 20, beginning at 3:00 p.m., followed by a service at 4:00 p.m. at St. Johns Family Funeral Home, 385 SR-207, St. Augustine, Florida. Interment will be held privately. Mark’s final resting place will be at Cape Canaveral National Cemetery. In lieu of flowers, donations may be made to Alice Cooper’s Solid Rock Teen Centers.

Mark Kupinewicz

September 2, 1961 - December 11, 2025