A year ago, I sold my ad agency to a new type of agency holding company. Here are the things I wish I knew before.

• One year ago, the ad agency Mekanism was bought by PE-backed holding company Plus Company.
• Mekanism CEO Jason Harris tells Insider what he wished he knew beforehand.
• He said going through due diligence was like getting “a couple of colonoscopies a week.”

The ad agency Mekanism sold one year ago to the Canadian holding company Plus Company, which is backed by the private equity firm CVC Capital Partners. 

Mekanism cofounder and CEO Jason Harris spoke with Insider about how the last year went, and what surprised him the most.