tax question, ask for help

I have stock of a company which was bought by another company last year, they offer some cash and the same amount of stock of the new company.
on the form 1099-B from the broker, they list the cash part as "Gross Proceeds less Commissions and Options Premiums". How to do with that? I didn't sell the stock. should I list it on the 1040? if yes, where should I list it?
Thank you very much.