Upon the occurrence and during the continuation of any Event of Default specified in Section 3(a) (solely with respect to failure to pay the principal hereof or interest thereon when due at the Maturity Date, after giving effect to any applicable cure period), the Note shall become immediately due and payable and the Company shall pay to the Holder, in full satisfaction of its obligations hereunder, an amount equal to the Default Sum (as defined herein). Upon the occurrence and during the continuation of any Event of Default, the Note shall become immediately due and payable and the Company shall pay to the Holder, in full satisfaction of its obligations hereunder, an amount equal to the sum of (w) the then outstanding principal amount of this Note plus (x) accrued and unpaid interest on the unpaid principal amount of this Note to the date of payment (the “ Mandatory Prepayment Date ”) plus (y) Default Interest, plus (z) six percent (6%) of the total amount of principal then outstanding (the then outstanding principal amount of this Note to the date of payment plus the amounts referred to in clauses (x), (y) and (z) shall collectively be known as the “ Default Sum ”) and all other amounts payable hereunder shall immediately become due and payable, all without demand, presentment or notice, all of which hereby are expressly waived, together with all costs, including, without limitation, legal fees and expenses, of collection, and the Holder shall be entitled to exercise all other rights and remedies available at law or in equity.