Investing in a startup with preferential shares

Salam All,

I want to invest in a startup that will offer preferential shares for everyone in the round, so that in liquidation, we will get back 90% of our investment first before distributing profits. There is no preference in dividends, or priority in any other sort of payments.

It will be ordinary shares, and preferred shares for the investors of this round.

Is it permissible to invest in those preferred shares? Also, if they allowed me to invest in ordinary shares, will it be halal given the company does offer preferential shares?

Could it be considered as a “Tanazul” given we agree on preferential shared and anyone who buy ordinary shares (or already bought ordinary shares) is in agreement that preferential shares will be sold in this raising round?

thanks