Can I Exercise Half of the ISO to avoid AMT?

Hi Tax Geek,

I know there is a tax exemption threshold for AMT each year, $71,700(2019). Let say I just want to exercise half of the option, which is under $71,700 (FMV - Strike) x Stock Options Exercise in 2020. Will I get hit by AMT tax? Are there other factors that I need to consider?

 

Thanks

Reece