H1B transfer and approved petition validity

[saranghshu]

Hi,

I am working in Company A and got my H1B transferred (or applied) by Company B more than 4 months

back. However, I could not join Company B for personal reasons.

Now, after 4 months, if I want to join Company B on the same H1B (provided Company B has not

withdrawn the petition), is that allowed?

Thanks,

Sarang