Sebastiaan Bornauw is a 27-year-old professional football player from BEL. At the international level, he represents Belgium U21. He plays primarily as a Defender. He stands at 190cm tall and weighs 81kg. His preferred foot is Right. His current market value is estimated at 8M €.

His most recent move was a Transfer from Leeds United to Hamburger SV on 2026-08-19.

Throughout the Bundesliga 2024-2025, Sebastiaan Bornauw featured in 19 matches, averaging 0.5 tackles, 0.6 interceptions, and 1.9 clearances per game, while blocking 0 shots per game.