Jack Ellison is a linebacker for Washington State listed at 6'2" and 224 pounds from Olympia, Washington. A redshirt sophomore, Ellison walked on prior to the 2024 season and redshirted as a freshman. In 2025, he appeared in all 13 games, primarily on special teams, and made one start. He recorded 11 total tackles including 2 for loss, 1 quarterback hurry, and 1 tackle on punt coverage across 105 snaps on special teams. His career-high came in his first start at North Texas with five tackles and one for loss.