FourLeaf is a registered Texas data broker with no self-service opt-out form — all requests, including opt-out of sale/sharing, must be emailed to privacy@fourleafdata.com or phoned in at (800) 360-6213. They will ask you to verify your identity (e.g., by matching data they hold or clicking an email link), and say they aim to respond within 45 days (extendable to 90). Their own reporting claims most delete/opt-out requests were handled in under a day.