WASHINGTON (AP) — Novavax’s closely watched COVID-19 vaccine is on track for full approval after additional discussions with the Food and Drug Administration, the company said Wednesday.

The news sent company shares soaring more than 21% in morning trading and appeared to resolve concerns that Trump administration officials might be holding up a decision on the shot.

Novavax makes the nation’s only traditional protein-based COVID-19 vaccine. It is still being sold under emergency use authorization — unlike mRNA vaccines made by Pfizer and Moderna that have earned full FDA approval for certain age groups.