Duolingo does not currently pay dividends and does not intend to in the foreseeable future.
Who is Duolingo's transfer agent?
AST.
Whom do I contact with questions about my stock?
You may reach an AST representative by dialing (800) 937-5449 or by dialing (718) 921-8124. You can also email AST at help@astfinancial.com. Customer service representatives are available 8 a.m. to 8 p.m. Eastern Time, Monday through Friday.