NorthWest Biotherapeutics Inc (NWBO)

[ccie1024]

the 26/27 timeframe

“The Roth IRA five-year rule says you cannot withdraw earnings tax-free until it's been at least five years since you first contributed to a Roth IRA account.”

[edit:]

And

“each Roth IRA conversion is subject to a separate five-year holding period. Doing several conversions over the years will require you to keep track of each five-year period carefully to avoid triggering any unexpected penalties.”