It is very common for an ESOP to purchase shares through a leveraged transaction. It is also very common to see a two part transaction agreement between three entities: the Company, the ESOP and a financial institution. In stage one, a financial institution will lend the money to purchase the ESOP shares to the Company with a loan agreement, from this point on referred to as the External Note (aka Company Note). The second stage is the loan agreement between the Company and the ESOP to purchase the shares, from this point on known as the Internal Note (aka ESOP Note). In this scenario you have two separate loan agreements.
