Yes, you do need to amend your income tax return because you did use the wrong basis.
Brokers are only required to report your "out of pocket" basis. For an RSU that's $0. But your correct basis for the shares sold, stated as a "per share" number, is the same as the per share "fair market value" used by the broker to calculate the compensation created by the vesting of the GROSS number of shares.
Presumably that $1,029.00 amount is correct for whatever number of shares you sold.
The amend process is explained here:
http://turbotax.intuit.com/support/iq/Amend-a-Return/How-to-Amend--Change-or-Correct--a-Return-You-A...
Go back to that trade and enter the correct basis. You should be due a refund.
Tom Young
