Comment by CRConrad

As I understand it, those were gross payments -- ~"for John Hawkwood and his company of merrie men" -- and he paid his men out of that.

But some of their compensation probably also came from whatever they were allowed to loot when they took a city -- which of course gave commanders an incentive to let their men loot a lot, so they'd be happy with that and not demand as much regular pay out of the commander's gross fee from his employer.