Tomasino recorded his first multi-goal game of his OHL career on November 17, scoring twice in a 6–3 victory over the Erie Otters.
Tomasino set a career high for points in a game, as on December 15, he scored two goals and added three assists in a 6–2 win over the Oshawa Generals.
On March 26, Tomasino earned his first career OHL playoff goal, as he scored twice against Christian Propp of the Battalion, and added an assist in a 6–0 win.
On January 2, Tomasino scored a goal and added four assists in a 9–8 overtime victory over the North Bay Battalion.
On January 25, Tomasino recorded his second five-point game with Oshawa, as he scored a goal and added four assists in a 7–4 win over the Kingston Frontenacs.
[8] During the 2024–25 season, on November 25, 2024, Tomasino was traded by the Predators to the Pittsburgh Penguins in exchange for a fourth-round pick in the 2027 NHL entry draft.