You are responsible for having enough taxes withheld during the year to cover your total tax situation, not just income from wages. If you had extra income from...
A comon error is that you did not correctly list your Oregon taxes withheld. Perhaps you $448 of state taxes withheld and you didn't list it in TurboTax.
Your Federal Taxes should not change significantly IF the taxes withheld on the stock sales match the taxes due. Your broker may have estimated the taxes based ...