A circular stapling instrument including a stapling forming assembly that isactuatedindependently from actuation of the cutting assembly is provided. Theinstrument includes ahandle assembly, an elongate body extending from the handle assembly, acartridge assemblymounted on a distal end of the elongate body. The cartridge assembly includesa pusherassembly and a knife assembly. The knife assembly is selectively fixedrelative to the pusherassembly.