Wiebusch racked up 69 points in 77 total regular season games at Penn State.
The Barracuda have three games remaining in the 2025-26 regular season.
Chin-DeGraves will have two years of eligibility remaining.
Herrington becomes Penn State's first addition out of the transfer portal this offseason.
Fink appeared in just 10 games with the Milwaukee Admirals before getting called up to the NHL.
Scade becomes the fifth Nittany Lion to ink a professional deal following the team's NCAA Tournament exit.