Deferred Compensation Account. Interest shall be credited on the balance of each participating Director’s Deferred Compensation Account commencing with the date as of which any amount is credited to the Deferred Compensation Account and continuing up to the last day of the quarter preceding the month in which payment of the amounts deferred pursuant to the Plan is made. Such interest shall become a part of the Deferred Compensation Account and shall be paid at the same time or times as the balance of the Deferred Compensation Account. For periods prior to July 1, 2008, such interest for each calendar quarter during the deferral period shall be computed at seventy percent (70%) of the higher of the following averages: # the prime rate charged by the major commercial banks as of the first business day of each calendar month (as reported in an official publication of the Federal Reserve System), or # the average monthly long-term rate of A rated corporate bonds (as published in Moody’s Bond Record). For periods on and after July 1, 2008, interest shall be credited at one-hundred twenty percent (120%) of the long-term applicable federal rate, with quarterly compounding, as published under Section 1274(d) of the Code for the first month of the calendar quarter.

Performance Plan Account. An Account to record the amount of a Participant’s Performance Compensation deferred pursuant to the provisions of Article IV of the Plan in respect of a Performance Grant Period, as from time to time adjusted to reflect any and all Equivalents attributable to such Deferred Performance Amount.

Annual Salary Account. An Account to record the aggregate amount of a Participant’s Salary deferred pursuant to the provisions of Article IV of the Plan in respect of a Plan Year, as from time to time adjusted to reflect any and all Equivalents attributable to such Deferred Salary Amount.

Deferred Cash Account. “Deferred Cash Account” means the bookkeeping subaccount established and maintained under this Plan and which is valued in accordance with Section 5(a), and which is maintained solely to calculate amounts payable to each Participant under this Plan and shall not constitute a separate fund of assets.

Deferred Cash Account. Each Participant’s Deferred Cash Account shall accrue interest computed using the Fidelity Investments Money Market Government Portfolio - Institutional Class. The interest shall be computed on the actual balance in each Participant’s Deferred Cash Account during the previous calendar quarter.

Revenue Account Priorities. All funds held in the Revenue Account shall be withdrawn or transferred to pay the following amounts on the dates and at the priorities indicated below:

BioThrax Receivables Account. Maintain the BioThrax Receivables Account with # a Lender or # another depository bank that is not a Lender, subject to a customary Account Control Agreement in favor of the Administrative Agent.

NuThrax Receivables Account. Once NuThrax has obtained either # full FDA approval or # FDA emergency use authorization pursuant to [Section 564] of the FFDCA, maintain each NuThrax Receivables Account with # a Lender or # another depository bank that is not a Lender, subject to a customary Account Control Agreement in favor of the Administrative Agent.

Cash Collateral Account. At any time and from time to time # after the occurrence and during the continuance of an Event of Default, the Administrative ​, at the direction or with the consent of the Required Lenders, may require the ​, to deliver to the Administrative ​ such amount of cash as is equal to 103% of the aggregate Stated Amount of all Letters of Credit at any time outstanding (whether or not any beneficiary under any Letter of Credit shall have drawn or be entitled at such time to draw thereunder) and # in the event of a prepayment under Section 2.07(b)(iv) or to the extent any amount of a required prepayment under any of [Sections 2.07(b)(i) through 2.07(b)(iii)] remains after prepayment of all outstanding Loans and Letter of Credit Obligations and termination of the Commitments, as contemplated by Section 2.07(d), the Administrative ​ will retain such amount as may then be required to be retained, such amounts in each case under [clauses (i) and (ii) above] to be held by the Administrative ​ in a Cash Collateral Account. The ​ hereby grants (or, if registration thereof is required in any applicable jurisdiction, shall grant) to the Administrative ​, for the benefit of the Issuing Banks and the Lenders, a Lien upon and security interest in the Cash Collateral Account and all amounts held therein from time to time as security for Letter of Credit Usage, and for application to the ​’s Letter of Credit Obligations as and when the same shall arise. The Administrative ​ shall have exclusive dominion and control, including the exclusive right of withdrawal, over such account. Other than any interest on the investment of such amounts in Cash Equivalents, which investments shall be made at the direction of the ​ (unless an Event of Default shall have occurred and be continuing, in which case the determination as to investments shall be made at the option and in the discretion of the Administrative ​), amounts in the Cash Collateral Account shall not bear interest. Interest and profits, if any, on such investments shall accumulate in such account. In the event of a drawing, and subsequent payment by the applicable Issuing Bank, under any Letter of Credit at any time during which any amounts are held in the Cash Collateral Account, the Administrative ​ will deliver to such Issuing Bank an amount equal to the Reimbursement Obligation created as a result of such payment (or, if the amounts so held are less than such Reimbursement Obligation, all of such amounts) to reimburse such Issuing Bank therefor. Any amounts remaining in the Cash Collateral Account after the expiration of all Letters of Credit and reimbursement in full of each Issuing Bank for all of its obligations thereunder shall be held by the Administrative ​, for the benefit of the ​, to be applied against the Obligations in such order and manner as the Administrative ​ may direct. If the ​ is required to provide Cash Collateral pursuant to this [Section 2.04(l)], such amount (to the extent not applied as aforesaid) shall be returned to the ​ on demand, provided that after giving effect to such return # the sum of # the aggregate principal dollar amount of all Revolving Loans outstanding at such time and # the aggregate Letter of Credit Usage at such time would not exceed the aggregate Revolving Commitments at such time and # no Event of Default shall have occurred and be continuing at such time. If the ​ is required to provide Cash Collateral pursuant to [Sections 2.07(b)(i) through 2.07(b)(ii)], as contemplated by Section 2.07(d), such amount shall be returned to the ​ on demand; provided that, after giving effect to such return, all outstanding Letters of Credit shall have expired and each Issuing Bank shall have been reimbursed in full for all of its obligations thereunder. If the ​ is required to provide Cash Collateral as a result of an Event of Default, such amount (to the extent not applied as aforesaid) shall be returned to the ​ within three Business Days after all Events of Default have been cured or waived.

Distribution of Account. The Company shall distribute amounts from the Participant’s Deferred Compensation Account and the Deferred Stock Account in the manner and on the date(s) applicable under this Section 6. If the payment option described in [Section 6(a)(i)] hereof is applicable, the amount of the lump sum shall be calculated using the valuation of the applicable portion of the Participant’s Account as of the December 31 preceding the date of the payment. If the payment option described in [Section 6(a)(ii)] hereof is applicable, the amount of each installment shall be calculated using the valuation of the applicable portion of the Participant’s Account as of the December 31 preceding the date of the installment payment divided by the number of installment payments that have not yet been made.