[spullara]

Any actual shares an employee owns at the IPO will not be taxed until they sell them. You might be referring to the synthetic RSUs that companies have been issuing that convert to real RSUs at the IPO (or acquisition) which does incur taxes.

[acchow]

Sure, "synthetic RSUs", or "double trigger RSUs", or such. But people call them RSUs when discussing the details of their job offers.