To fall under the restrictions of Regulation U a loan must pass the following tests: (look especially to the first test.)
o - The stock involved must be margin stock. Lending on the collateral of nonmargin stock, such as the stock of a closely held corporation is not restricted.
o - The loan must be secured directly or indirectly by the margin stock. A loan is indirectly secured by stock if the borrower‘s right to sell, pledge, or dispose of the stock is restricted; or if the exercise of such a right gives the bank the right to accelerate the maturity of the credit
0 - The purpose of the loan must be to purchase or carry margin stock.
I would make sure to verify the total stock outstanding and take the normal credit risks.
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Integrity. With it, nothing else matters. Without it, nothing else matters.