If you sold stock then you should be receiving a 1099-B from the broker that effected the sale. You'll enter that information into TurboTax using the "Stocks, Mutual Funds, Bonds, Other" interview. This interview is only available in "Premier" and above if you're using TurboTax online. All the "desktop" versions do allow for the reporting of the sale.
In the interview you'll enter a description of what was sold (e.g., 150 sh Company X stock"), the date of sale and the proceeds from the sale. All that information will certainly be on the 1099-B. What may NOT be on the 1099-B given your long holding period, is the date of acquisition of the stock and the basis. That information should be available from your own record of stock purchases. If all the stock sold was "long term", i.e., owned for more than a year, you can use the word "various" in the date acquired field.
Tom Young
