My last employer, Tanium, offered single-trigger RSU's (vesting required time but no liquidity event) - they were taxed as they vested. We had a couple of choi

My last employer, Tanium, offered single-trigger RSU's (vesting required time but no liquidity event) - they were taxed as they vested. We had a couple of choices to pay the taxes: the default was that the employer would buy back some of the stock and use that cash to pay the taxes. Employees would get to keep 70-some percent of the stock. The other option was that employees could write the company a check for the taxes shortly before vesting, and then keep all of the stock.