The move likely clears the way for captain Patrick Marleau to return to the lineup. Marleau, in the midst of a disappointing season, has missed four games since straining his groin against Nashville on Feb. 9.
The Sharks put him on injured reserve Monday to clear a roster spot for Iggulden, who didn't score in his NHL debut against the New York Islanders.
Marleau has 10 goals and 18 assists this season, well off his point-per-game pace of the past two campaigns, and a minus-21 rating. Though Marleau hasn't been activated from injured reserve, he's expected to be back in the Sharks' lineup Wednesday night in New Jersey for the third stop of an eight-game road trip.