Choose a broker that provides access to the .

Popular options include Fidelity, Charles Schwab, or Interactive Brokers .

Note that some brokers require "settled funds" (funds that have fully cleared) before allowing trades on high-risk OTC stocks.

To buy stock, you must use a brokerage that supports Over-the-Counter (OTC) trading, as it is not listed on major exchanges like the NYSE or NASDAQ. How to Buy ERBB Stock Open a Brokerage Account

Verify the company name is to avoid confusion with other "Green" tickers like AMNE . Place a Limit Order