The Baltimore Ravens have signed fourth-round rookie TE Charlie Kolar, according to Aaron Wilson.
The Ravens still have four players from their draft class that remain unsigned.
Kolar, 23, appeared in 43 games over four years at Iowa State. He brought in 168 catches for 2,181 yards and 23 touchdowns over his career. He was a two-time 3rd team AP All-American and two-time first team all-conference selection for the Cyclones.