Etsy is an online marketplace that makes it easy for people to buy and sell all things handmade and vintage. The company is doing pretty well: it has over 800,000 active sellers and a 15 million-person marketplace across 150 countries, and last year its gross merchandise sales reached $525 million. But CEO Chad Dickerson isn’t satisfied. He’s committed to making Etsy a business with a higher purpose beyond profit. To that end, he’s helped Etsy become a Certified B Corporation — a new type of company which uses the power of business to solve social and environmental problems.