Company owner using brothers finance company for retirement plan

The company I work for was acquired a few years ago, and they are now moving over our previous Simple IRA to a new one with his brother’s investment group.
Everything I can see shows this is a real company with all the proper licensing and has been in business for a suitable amount of time. However, with the family relationship what if any additional steps should I take, if any?
Request additional documentation, like compensation disclosures?