My company awarded me restricted stock units (RSU) few years ago which will vest December 1, 2015 and get converted to shares. Since vesting is a taxable event, the total share value in U.S dollars will be reported to IRS and taxes withheld. I have already certified and submitted tax form W-9. I have opted to reinvest dividends to buy new shares. So in 2015, I will neither be receiving dividends nor selling the shares. Do I still have to report anything to IRS when filing tax returns next year? Will I get any form from IRS for filing returns?