Currently I am working in US from Company A with L1B 2016 and I have H1B from Company B from the year Oct 2015 which is never used. now I wanted a clarification, if I get opportunity to work for Company C, whether Company C can transfer my H1B as currently do not see any opportunity with Company B.
Oct 2015 - H1B (never used) - Company B
May 2016 - L1B (Currently Active) - Company A
Note: H1B was applied when I was out of US.