Promise to Pay; Interest Payment Dates; Fees; Interest and Fee Basis; Taxes. Promise to Pay. Without limiting the provisions of Section 1.4 hereof, each Borrower unconditionally promises to pay when due the principal amount of each Loan incurred by it and all other Obligations incurred by it, and to pay all unpaid interest accrued thereon, in accordance with the terms of this Agreement and the other Loan Documents.

Interest Payment Dates; Interest Basis. (i) Generally. Interest accrued on each Dollar-denominated Floating Rate Advance shall be payable on each Payment Date, commencing on the first such date to occur after the date hereof, on any date on which such Floating Rate Advance is prepaid or converted, whether due to acceleration or otherwise, at maturity and thereafter on demand. Interest accrued on each Sterling- denominated Floating Rate Advance shall be payable on each date that is on the numerically corresponding day in each calendar month that is one month after the borrowing of such Loan, commencing on the first such date to occur after the date hereof, on any date on which such Floating Rate Advance is prepaid, whether due to acceleration or otherwise, at maturity and thereafter on demand. Subject to the next sentence, interest accrued on each Eurocurrency Rate Advance shall be payable on the last day of its applicable Interest Period, on any date on which such Eurocurrency Rate Advance is prepaid, whether due to acceleration or otherwise, at maturity and thereafter on demand. Interest accrued on each Eurocurrency Rate Advance having an Interest Period longer than three months shall also be payable on the last day of each three-month interval (in the case of Eurocurrency Rate Advances) during such Interest Period. Interest on all Eurocurrency Rate Advances (other than Eurocurrency Rate Advances denominated in Sterling), all Dollar-denominated Floating Rate Advances which bear interest based on the Federal Funds Effective Rate and all fees due hereunder shall be calculated for the actual number of days elapsed on the basis of a 360-day year. Interest on all Dollar-denominated Floating Rate Advances which bear interest based on the Prime Rate and all Sterling-denominated Floating Rage Advances shall be calculated for the actual number of days elapsed on the basis of a 365, or when appropriate 366, day year. Interest shall be payable for the day an Advance is made but not for the day of any payment on the amount paid if payment is received prior to 12:00 Noon (local time) at the place of payment. If any payment of principal of, or interest on, an Advance or of fees due hereunder shall become due on a day which is not a Business Day, such payment shall be made on the next succeeding Business Day and, in the case of a principal payment such extension of time shall be included in computing interest in connection with such payment. Each Borrower promises to pay interest on its respective Advances as provided in this [Section 2.08(e)].

Interest Payment Dates. Accrued interest on each Loan shall be payable in arrears on each Interest Payment Date for such Loan, and at such other times as may be specified herein, provided that # interest accrued pursuant to paragraph # of this Section 3.1 shall be payable on demand, # in the event of any repayment or prepayment of any Loan, accrued interest on the principal amount repaid or prepaid shall be payable on the date of such repayment or prepayment, and # in the event of any conversion of any LIBOR Loan prior to the end of the current Interest Period therefor, accrued interest on such Loan shall be payable on the effective date of such conversion.

Interest and Interest Payment Dates. In lieu of having interest charged at the rate based upon the Base Rate, Borrower shall have the option, subject to [Section 2.12(b)] below (the "LIBOR Option") to have interest on all or a portion of the Revolving Loans be charged (whether at the time when made (unless otherwise provided herein), upon conversion from a Base Rate Loan to a LIBOR Rate Loan, or upon continuation of a LIBOR Rate Loan as a LIBOR Rate Loan) at a rate of interest based upon the LIBOR Rate. Interest on LIBOR Rate Loans shall be payable on the earliest of # the last day of the Interest Period applicable thereto, # the date on which all or any portion of the Obligations are accelerated pursuant to the terms hereof, or # the date on which this Agreement is terminated pursuant to the terms hereof. On the last day of each applicable Interest Period, unless Borrower properly has exercised the LIBOR Option with respect thereto, the interest rate applicable to such LIBOR Rate Loan automatically shall convert to the rate of interest then applicable to Base Rate Loans of the same type hereunder. At any time that an Event of Default has occurred and is continuing Borrower no longer shall have the option to request that Revolving Loans bear interest at a rate based upon the LIBOR Rate.

Promise to Pay. FOR VALUE RECEIVED, the undersigned JAYHAWK ENERGY, INC., a Colorado corporation, together with its successors and permitted assigns, having an office address at 611 E. Sherman Avenue, Coeur d’Alene, Idaho 83814 (the “Borrower”), promises to pay, ON DEMAND, to the order of VAST EXPLORATION, LLC, a Texas limited liability company, its successors, assigns and/or affiliates (“Lender”), at such place as may be designated from time to time in writing by the holder hereof to Borrower, the principal sum of ONE HUNDRED THOUSAND DOLLARS AND NO/100ths ($100,000) or the aggregate unpaid principal amount of all advances made by the Lender to the Borrower, as show on the books and records of Lender, together with interest on the unpaid principal balance hereof from time to time outstanding from the date hereof until the entire principal amount due hereunder is paid in full at the “Borrowing Rate” (defined below).

Advances to Pay Interest, Fees, Expenses, Taxes and Insurance. Subject to the provisions of this [Section 2.20(b)], ​ hereby requests that ​ make an advance on each Payment Date (or prior to the date that payment of the same shall become delinquent hereunder) of: # interest due at such time; # fees under the Building Loan Documents that are then due to ​, as applicable; # to pay Taxes and Insurance Premiums that are then due and payable (provided that, Taxes shall not include any assessments for the C-PACE Loan until the Payment Date occurring in August, 2024), and # expenses and other reimbursables under the Building Loan Documents that are then due and payable. Notwithstanding anything to the contrary contained in this Agreement, # all positive net cash flow from the Property, to the extent that ​, in its sole judgment, determines that it is sufficient to pay for such interest, fees, expenses, Taxes and Insurance Premiums shall be used for the same before proceeds of the Building Loan are disbursed for such purposes, # the amounts otherwise to be funded by ​ pursuant

Promise to Pay. For value received, intending to be legally bound, ​ promises to pay to the order of the ​, on the dates set forth below, the Principal Amount plus interest as agreed below, all payments required by the ​ to fund any escrow accounts for the payment of taxes, insurance and/or other charges (collectively, “Escrow”), and all fees and costs (including without limitation attorneys’ fees and disbursements whether for internal or outside counsel) the ​ incurs in order to collect any amount due under this Note, to negotiate or document a workout or restructuring, or to preserve its rights or realize upon any guaranty or other security for the payment of this Note (“Expenses”).

The Borrower promise to pay interest on each Loan in arrears on each Interest Payment Date with respect thereto.

. (a) The Eurodollar Loans comprising each Eurodollar Tranche shall bear interest for each day during each Interest Period with respect thereto on the unpaid principal amount thereof at a rate per annum equal to the Eurodollar Rate plus the Applicable Margin.

Payment of Interest. Interest on the unpaid principal balance of this Note shall accrue at the Applicable Rate commencing on the Funding Date. Interest shall be computed on the basis of a 365-day year and paid for the actual number of days elapsed. The Company shall pay the interest accrued at the end of every month and on a monthly basis thereafter. If at the Maturity Date there is any accrued and unpaid interest under this Note, then such shall be paid in full on the Maturity Date. Any accrued but unpaid interest shall, at the option of the Holder, be included, from time to time, in the Conversion Amount (as defined herein).