Most of the bounty managers have their website in which they upload the bounties in which they manage and make it easy for the hunters to find the bounties they manage and easy accessible for hunters. But these managers don't do upload spreadsheet for hunters to see their stakes.
The bounty managers on Bitcointalk always have their spreadsheet shown to hunters and make them awear of the qualified people and the rejected hunters  , but to find the bounty of some favourite bounty managers is not that easy.