The arrestees, using their knowledge of the controls surrounding construction contract procurement and payment and the weaknesses and enforcement of these controls, were able to falsify source documentation, effectively override invoice and payment controls, and facilitate overpayments to the contractor for their own personal monetary gain.
With this sort ofcontract, the owner of a big, highly appreciated stock position gets an upfront payment from an investment firm--typically for 75% to 85% of the value of his shares--in exchange for agreeing to deliver a variable number of shares or cash in the future, with the exact amount dependent on how the stock performs.