The Ravens have one-third of their draft picks under contract.
They are the first three Baltimore selections to sign.
A third-round pick from Colorado State, the 6-foot-6, 260-pound Gillmore caught 47 passes for 577 yards and two touchdowns in 2013. He could be the third tight end behind Dennis Pitta and Owen Daniels as a rookie.
Urschel (6-3, 313) will vie for a reserve role along the interior of the Ravens’ line. The fifth-round selection from Penn State was a two-season starter at guard for the Nittany Lions.
A sixth-round pick, Wenning could figure as Baltimore’s third quarterback. In his final season at Ball State in 2013, Wenning (6-3, 218) threw for 4,148 yards with 35 touchdowns and seven interceptions, and he completed 64.1 percent of his attempts.