Capital Gains Tax on long term incentive shares

Hello, As part of a long term incentive scheme, I was granted restricted shares in a US publicly listed company that vest at the end of a three year period if I remain an employee. I did remain an employee so these shares vested in March 2022 and are now in my stock account. When the shares vested, the closing market price on that day became the vesting price. At the same time my employer sold a portion of the shares to cover both the income tax and employee’s national insurance. This was shown on my payslip as "2019 RSU/PSU Share Payment Ad" and also "2019 RSU/PSU Dividend Ad". I am now planning on selling a portion of these shares and want to confirm if capital gains tax will be required to be paid on this transaction? And if so the value of the gain would be between the price of the shares upon vesting to the sell price? Thanks in advance.

Hi,
Yes, Capital Gains Tax is likely to be due if the value has inceased from the date vested to the sale date.
Thank you.