Yes, enter the transaction that is missing from your 1099-B. It appears that you have everything you need for this transaction, i.e. you have the quantity, basis, sales price, dates. Thus, this missing transaction appears to be straightforward.
The merger transaction is much less clear. You have a date sold, a quantity, and a negative proceeds amount reflecting a loss. However, there is no basis, or date purchased. Let's follow the advice from @JulieS, and report what you have. For the date purchased, you might consider "various" if TurboTax requires that you enter a date.
@alek
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
