H1B Transfer Needs Visa Stamping

[gyanchndra]

Hi,

I had H1B visa with company A. Now I had transferred this H1B with company B. I had to leave US without joining company B. But I had transferred petition with me. Do I need stamping again with company B. Stamped date of Visa on passport is April, 08.

I really appreciate your help in this regard.

regards,
Gyan