Things You'll Need
Instructions
Open a trading account with a stock broker if you do not already have an account. Check around and compare fees and minimum balance requirements before opening your account and choose the broker that is best suited to your needs and budget.
Consult with a broker at the firm handling your account. Let the broker know that you wish to deposit stock certificates into your trading account with the goal of selling them. There may be a little paperwork that the broker will send you and ask that you sign.
Sign (endorse) the back of your stock certificate and mail it or hand carry it into your broker's office with explicit instructions that the certificate(s) are to be placed into your trading account in order to be sold.
Instruct your broker to sell your certificates. You can instruct your broker to sell "at market," meaning your shares will be sold for whatever price the market sets at the moment your broker places your shares up for sale, or you may specify a particular price you wish to receive for your shares (this is known as a limit order). You may place any value you wish on your shares, but keep in mind that they may not sell right away if they are priced too far above the current market price.