The 19-year-old forward scored 25 points (16 goals, nine assists) in 26 games this season with HIFK in Liiga, the top professional league in Finland.
He also led second-place Finland at the 2021 IIHF World Championship with seven points (four goals, three assists) in 10 games.
"Anton is a cerebral, skilled and dynamic young player who continuously established himself in Finland's top league and played a pivotal role on Finland's national teams at all levels," Panthers general manager Bill Zito said. "Anton's maturity, compete level and sound two-way ability are exciting qualities to add to our organization. We are thrilled to have signed Anton and look forward to his future with the Florida Panthers for years to come."
