McDonald's is planning to sell Krispy Kreme doughnuts at its restaurants nationwide by the end of 2026, the chains announced Tuesday. The rollout will start in the second half of this year, but it will take roughly two and a half years as Krispy Kreme more than doubles its distribution to satisfy the partnership. For the duration of the agreement, McDonald's will be the exclusive fast-food partner for Krispy Kreme in the U.S. Shares of Krispy Kreme jumped almost 20% in premarket trading Tuesday after the announcement. The doughnut chain uses a "hub and spoke" model that lets it make and distribute its treats efficiently. Production hubs, which are either stores or doughnut factories, send off freshly made doughnuts every day to retail locations such as grocery stores and gas stations.