Business Brokers and LMM Investment Banks / Intermediary Lists

Hello,

I am working on a roll-up in the commercial mechanical services industry and am looking to connect with more intermediaries and sell-side advisors focused on the lower middle market. Does anyone have any lists of individuals/firms and associated contact info? We have our own CRM and network of folks but just trying to turn over every rock possible at this point.

I am happy to be collaborative and share what we already have as well so that we can be mutually beneficial.

Thank you,
Cameron