No interest shall accrue on this Note. The Maturity Date is six months after the Effective Date and is the date upon which the Principal Sum of this Note, as well as any unpaid interest and other fees, shall be due and payable. The Investor may extend any Maturity Date in its sole discretion in increments of up to three months at any time before or after any Maturity Date. The Issuer may repay this Note at any time on or before its Maturity Date.