Kalczynski is Penn State's third member in the Class of 2027.
Erika Ho scored six goals in the Nittany Lions' win against Rutgers on Saturday.
Penn State finished tied for first in the Big Ten, earning a bye week after the Rutgers win.
Mirtič is the eighth Nittany Lion to enter the portal this offseason.
Téa Cléante becomes the latest Lady Lion to find a new home.
The Nittany Lions were 2-16 at the plate.