Do i report a stock sale in a roth ira

No, do not report stock sales in Roth IRA's, Traditional IRA's, 401(k)'s, etc. 

One of the most advantageous IRS rules for IRAs is that you don't have to pay taxes on any of your stock sales in the year you sell them.

Additional information:

IRS Tax Topic 451 - Individual Retirement Arrangements (IRAs)

This is assuming you left the proceeds of the sale in the Roth account.  If you took the money out then the Roth manager would send you a 1099R form.