@yoturyo wrote:
Should I leave out the list of reinvested dividends?
Yes, leave it out. The reinvested dividends are not part of the 1099-B, and have nothing to do with the sales. It would just confuse the issue. The reinvested dividends are not the reason that the date acquired is missing. You can always use "various" for the date acquired.
The dividends that you received would have been reported on a Form 1099-DIV, or in the 1099-DIV section of a consolidated statement. You should have reported them as dividend income on your tax return. You probably did report the dividends, otherwise the IRS would be billing you for additional tax on the dividends as well.
