After-hours movers:

lululemon athletica (NASDAQ: LULU) fell 6% after it issued full year guidance that trailed estimates, despite beating estimates for fourth quarter EPS and revenue.

Argan (NYSE: AGX) rose 13% after its quarterly EPS and revenue beat consensus. Argan reported Q4 EPS of $2.22, $1.07 better than the analyst estimate of $1.15. Revenue for the quarter came in at $232.47 million versus the consensus estimate of $197.5 million.

Portage Biotech (NASDAQ: PRTG) rose 30% after reporting promising preclinical results in mesothelioma supporting the first-in-human trial of PORT-7.