I invested in a privately held start up in 1994. I sold those shares in 2024. Where do I enter it in turbo tax?

You report that sale in the same section where you would report the sale of General Motors, or any other stock.  While working in your return:

• In the income section, Select Investments and Savings....
• On the page "Did you have investment income in 2024?"  Answer Yes
• On the page "Let's Import your tax info" click on "Enter a different way"
• Select "Stocks, Bonds, Mutual Funds" on the OK let's start with one investment type
• When asked "Which bank or brokerage is on our 1099-B?" Give a description of the investment for the bank or brokerage, leave the other fields blank. Click Continue
• Answer the next three questions
• Answer Yes to "Did you buy every investment listed...."
• Select "One by One"
• Continue past the "1099-B"
• On the page "Now, enter one sale..." for Sales section, select either "Short-term did not receive 1099-B form" or "Long-term did not receive 1099-B form"
• For type of investment select Stock & give a brief description
• Enter the date acquired and the date sold