[1][2][3][4][5][6] He is known for playing Jeremiah Fisher in the television series The Summer I Turned Pretty.
[9] Casalegno relocated to Los Angeles for bigger opportunities and, by the age of eleven, he booked his first film project.
[10][11] In July 2021, Deadline reported that Casalegno would play Jeremiah Fisher as one of the main characters in the Amazon Prime television series based on Jenny Han's coming-of-age novel, The Summer I Turned Pretty, which premiered on June 17, 2022.
[17] On June 13, 2023, Variety announced that Casalegno was cast to play a role in a biographical film of the WWE Hall of Fame-inducted wrestler Mildred Burke in Queen of the Ring.
He is a Christian, frequently referring to his faith and reading the Bible on his various social media platforms.