Founders should be careful to the composition of the BoD. It should reflect actual % ownership of the company and not be controlled by investors through a series of mechanisms like an independent board member on the investors’ side.

Board of directors, investor control, founder control, board representation, independent directors

How can founders not lose control of the BoD?

Board of Directors - https://www.investopedia.com/terms/b/boardofdirectors.asp

The board of directors: role and composition - https://saylordotorg.github.io/text_corporate-governance/s05-the-board-of-directors-role-an.html