Disclosed herein are surfactant free lyophilized formulations of antibody-drug conjugates (ADCs), such as anti-tissue factor ADCs, and reconstituted formulations, processes and uses thereof. The formulations are particularly suitable for an anti-TF ADC based on an auristatin derivative or other similarly hydrophobic drug. Typically, the excipients of the formulations comprise or consist of histidine, sucrose, trehalose, mannitol and glycine.