Veilleux spent last season at Pitt.
Eight Nittany Lions were selected in the 2024 NFL Draft.
Ellis was the second Nittany Lion to sign a UDFA after Curtis Jacobs signed with Kansas City.
Jacobs will join Hunter Nourzad, who was a fifth-round selection, with the Chiefs.
A poor showing against Ohio State started a downward trend for the once-first-round projection.
Hardy became the seventh Penn State defensive back to hear his name called.