I sold some stocks that were worthless, and noticed they are not mentioned in my 1099-B. I assume this is because there were no actual "proceeds" from the sales. Since these are not on my 1099-B, when I enter the sales into my gain/loss worksheet (I'm actually using a tax software to do this), will this raise a red flag with the IRS? I guess I'm asking, did my broker make an error by not reporting the worthless stock sales in my 1099-B?