Need advice on taxation for stocks held in USA

I need some advice on taxation for stocks held in USA.

I have few stocks held in US brokerage account. These were acquired as ESPP (Employee stock purchase plan). Wanted to understand - 

1. Tax treatment if I sell these and transfer funds to India.
2. Will I need to pay tax both in US and India ? 
3. How to file ITR for this in case I sell the stocks and transfer funds to India ?

Appreciate all the help from the members.

Thanks,

Mudit