Nope. You can buy up until the trade date + 2 for

Nope. You can buy up until the trade date + 2 for stock clearing. So if they get uplisted on 9/30/19, then 9/26/19 might be the date you have to buy shares by to get the dividend. Bottom line, you have a bunch of time to still buy more shares.

Disclaimer: Of course, all of this is my opinion and you should not make any investment decisions based on my opinion. I have not received any non-public information.