We develop a contingent claims model of a firm in financial distress with a formal account for renegotiations under the Chapter 11 bankruptcy procedure. Shareholders and two classes of creditors (senior and junior) alternatively propose a reorganization plan subject to a vote. The bankruptcy judge can intervene in any renegotiation round to impose a plan. The multiple-stage bargaining process is solved in a non-cooperative game theory setting. The calibrated model yields liquidation rate, Chapter 11 duration and percentage of deviations from the Absolute Priority Rule that are consistent with empirical evidence.