I have a client who owns part of another trucking company with other...

I have a client who owns part of another trucking company with other people, but she is starting her own LLC where she will be the sole owner and will have her own filings. Progressive said there is no problem, while BHHC said no unless they insure the other business as well. Do you know if Cover Whale would have an issue with this, or what carrier you would recommend for a California risk? Interstate.