Can a SPAC merge with an already listed company?

Hi Monkeys - I am wondering if it is possible for a SPAC to merge with a company that is already public. The purpose of such a transaction could be a couple of things:

1. existing public company doesn't want to go through the process of a share issuance to raise new cash
2. foreign public company wants to reverse-merge into US-listed entity + raise cash
3. SPAC merges with public company + private target to create NewCo

Has anyone seen something like this? Is it even legal per FINRA / SEC guidelines?

Thanks for any insight.