Reviewed by Tyler Brown, CFP®. Published September 11, 2026. Last reviewed September 11, 2026.
Restricted stock generally becomes yours on a schedule, and that schedule rarely lines up neatly with a retirement date. A separation a few months before a large vest can leave value on the table. A separation just after can create a concentrated taxable event in a year that already has other income in it.
The starting point is a clear inventory: what is granted, what is vested, what vests when, and what the award documents say happens at separation or retirement.
There is no universal percentage that is too much. The relevant question is how much of the household's retirement depends on one company, and whether the plan still works if that position falls substantially and does not recover quickly.
While you are employed, that concentration is doubled: the paycheck and the portfolio share one source. Retirement removes the paycheck side of the risk and leaves the portfolio side.
Cost basis, holding period, account location, and the year the sale lands in all affect the after-tax result. A position held in a taxable account, a position inside a 401(k), and a position from a recently vested RSU are three different tax problems even when the ticker is the same.
Charitable giving, loss harvesting elsewhere in the portfolio, and spreading sales across tax years are among the levers evaluated. Tax advice comes from your qualified tax professional.
For equity-compensated professionals, the retirement date is partly a compensation decision. Vesting dates, bonus timing, plan eligibility rules, and the tax bracket of the final working year can all shift the economics of leaving in January versus December.
Company stock held inside an employer retirement plan can have provisions that do not exist elsewhere, and a rollover can eliminate options that were available inside the plan. Review the plan document before initiating any transfer. See the 401(k) and employer plan FAQs.
Selling faster reduces single-stock risk sooner and may concentrate the tax consequence. Selling gradually spreads the tax and leaves the risk in place longer. Neither is right by default, which is why the tradeoff is worth modeling against the retirement plan rather than decided from a rule of thumb.