Discloses lyophilized pharmaceutical formualtions comprising an anti-EGFR antibody drug conjugate (ADC). The antibody has the HCDR sequences of SEQ ID NO: 15-17 and the LCDRs of SEQ ID NO: 20-22 or the HCVR of SEQ ID NO: 13 and the LCVR of SEQ ID NO: 18. The auristatin can be monomethylauristatin F (MMAF). The formulation further comprises a sugar, histidine and a surfactant. In a further embodiment the formulation comprises sucrose, histidine and polysorbate 80.