SAN FRANCISCO--(BUSINESS WIRE)--Pinterest, Inc. (NYSE: PINS) today announced that Emily Reuter, Chief Financial Officer of Instacart, has joined the company's Board of Directors, effective September 18. "Emily is a seasoned executive who has scaled some of the world's most dynamic technology and e- commerce businesses, including Instacart and Uber,†said Bill Ready, Chief Executive Officer of Pinterest. "Her experience will be invaluable as we execute Pinterest's strategy of becoming a global le. ...