The first two are common stock purchase agreements, allowing you to buy stock in the newly reincorporated Facebook, as opposed to the old shares, which are now worthless. The third is an exchange agreement allowing you to exchange the old shares for new shares, and then finally a voter holding agreement.
Svo er samningur sem leyfir ađ skipta út gömlu bréfunum fyrir ūau nũju og loks samūykkt um ađ ákvörđun meirihluta gildi.