[andrewf]

I'll add that, the original post says the vest date was in 2024 but the settlement date is in 2025. I'm a little surprised (but I'm not an expert!) that your taxable event is in 2025, rather than occurring on the vest date at that date's FMV. Generally the "vest" event is the point past which you have no (per some complicated definition) threat of forfeiture... but the company is threatening to forfeit the shares pending conditions...

In your shoes I'd be seeking an accountants' advice re: (1) do you already owe tax on these shares for tax year 2024? (2) if you don't take receipt of the shares for some process reason, might you still owe taxes on them?

Sorry you're going through this, I hope it's worth it in the end.