For starters it means they were willing to take a significant...

For starters it means they were willing to take a significant percentage of their sale price as shares in the company, a good sign they like what they see, and commits both parties financially to seeing the business continue to grow. Secondly it means they literally sold for less than the 2 million sale price ,( as at market it is not currently at .4 cents), hence they expect that this price is actually good value despite the current market price.