Hello fellow Sajha member

I have a question regarding filling out my I-9 form

Here is my situation

1. Currently I am on H1B working for Company A (Consulting) at Company B. Company A filed my H1B on April 2011, which is approved and valid till 2014.
2. Recently Company B filed for my H1B transfer and the case is still in initial review.
3. I know that I do not need to wait for my H1B transfer approval to be in Company B's payroll.  
4. I need to fill I-9 form for company B

Here is my question