Got H1B stamped in Dec 2013, never used it. can I apply under cap-exempt with premium processing now?

USA H1B Visa
1

Got H1B stamped in Dec 2013 with employer A, the validity on the H1B stamp is from Dec 2013 till June 2016, I have never used it, I never flew to USA. can I apply under cap-exempt with premium processing with employer B now August 2018?

2

can I apply under cap-exempt with premium processing with employer B now August 2018?

Yes