N.Y. Comp. Codes R. & Regs. tit. 21, § 4242.6
(3) Loans generally will be made for the following terms:
(5) Guarantees generally will be required of any holder of 20 percent or more of the shares of the borrower in those instances in which the corporation determines that the financial circumstances of the borrower alone are insufficient reasonably to assure repayment of the program loan and such guarantee is necessary or advisable to secure repayment.
(b) Loans, loan guarantees, and grants, including interest subsidy grants.
(a) Loans.