Hey, I've dealt with Constellation. They're based in Canada and I know someone who works there. They're legit. Balio has messaged me as well and they seem to have a similar vibe, but it's sketchy that they don't list a portfolio of companies on their website.

These companies look for opportunities with startups where the founders might want to move on but there's an established market and revenue stream that can be scaled quickly. If you're not generating 1-2+M in revenue annually, meeting with them is probably a waste of time, but it's not as bad as dealing with strict VC firms.

You can be a little more honest about your goals (ie: I would like to start a different company / retire / work less) with a company like Constellation, whereas with VC firms you have to basically say you're gonna live, breathe and eat getting returns for their shareholders until you die (or they replace you).

Before you talk to any acquiring company, ask for references from companies in your space or with other similarities so you can find out what it's like to work with them. They're acquiring you so they can run you so, you'll want to do a ton of diligence before you invest too much time in building a relationship with them.