O-1B Extension and Authorized Period of Stay

Question details

I have been in the US for six years. First O-1B expired on Feb15, sent in application for the 2nd O-1B already in December. The itinerary wasn't sufficient, response due by April 26th, ready to send in the completed itinerary plus additional letters of intended employment. My household is in New York. I am still here. Am I illegal now? Is there a grace period?

As long as you had filed your extension application before expiration of the current status, you are not illegal as long as the case is pending. You are in

L-1A to EB-1

Question details

I am on L-1A (been about 4 years) from company A and in closing stages of getting a very good offer from company B. Both A & B are global corporations. For company A, I oversee business across continents (Both North America & Latin America). Company B is very keen on having me on board.
1. What are all the possible options on visa front so that I can join company B?

2. What is the quickest option that can help me get on to company B?

3. If I want GC, can company B file for it when am still on payroll of company A - if so, can it be EB-1?

Since A and B are not related, H-1B is the only obvious option to join B. B can start your green card even before you join, but it will not be EB1 (international manager/exec.).